Electronic device and audio signal output control method using same

Abstract

This electronic device may obtain a first feedback signal corresponding to a first audio signal extracted from a first transmission path and a second feedback signal corresponding to a second audio signal, extracted from a second transmission path, by using a converter; identify first state information regarding a first amplifier by using a first feedback signal in a first frequency band configured to correspond to the first amplifier; identify second state information regarding a second amplifier by using a second feedback signal in a second frequency band configured to correspond to the second amplifier; control the first amplifier on the basis of the first state information; and control the second amplifier on the basis of the second state information.

Description

Electronic device and method for controlling output of audio signal using the same

[0001] Embodiments of the present disclosure relate to an electronic device and a method for controlling output of an audio signal using the same.

[0002] With the recent advancement of digital technology, various types of electronic devices (user devices) capable of communication and personal information processing (e.g., mobile terminals, PDAs (Personal Digital Assistants), electronic organizers, smartphones, tablets, and / or PCs (Personal Computers)) are being released. As the functions provided by electronic devices diversify and their widespread use in daily life increases, the amount of time spent using them is gradually increasing. Electronic devices may be designed to be easily portable, with a certain size and weight, and may have constraints on the arrangement of their components.

[0003] An electronic device may include a plurality of speakers and may be utilized as an audio output device that provides stereo audio signals. The electronic device may include a plurality of amplifiers to improve the sound quality of the audio signals output through the speakers. In one embodiment, the electronic device may control the output of the audio signals output through the speakers based on an amplifier operatively or electrically connected to the speakers. In one embodiment, the electronic device may output an audio signal having optimal sound quality by taking into account the performance of the speakers.

[0004] The above information may be provided as background art to aid in understanding the present disclosure. No claim or determination is made as to whether any of the above-described matters constitute prior art related to the present disclosure.

[0005] An electronic device may include a plurality of speakers and utilize a plurality of amplifiers operatively or electrically connected to the plurality of speakers. For example, a first speaker may output a first audio signal based on a first amplifier, and a second speaker may output a second audio signal based on a second amplifier different from the first amplifier. The electronic device may determine an output level of the first audio signal by controlling the first amplifier, and may determine an output level of the second audio signal by controlling the second amplifier.

[0006] An electronic device can obtain a feedback signal to determine status information (e.g., performance information or temperature information) related to a speaker and an amplifier. For example, the electronic device can obtain a feedback signal included in an output signal (e.g., an amplified audio signal) of the amplifier based on a converter (ADC, analog-digital converter). The converter (ADC) may be a component that converts an analog signal, such as a current value and / or voltage value, into a digital signal. The electronic device can determine a status (e.g., performance and / or temperature) related to the speaker and / or amplifier based on the feedback signal converted into a digital signal.

[0007] According to one embodiment, an electronic device may provide a method of determining status information (e.g., performance information) about an amplifier (e.g., an amplifier (AMP)) using a smaller number of analog-to-digital converters (ADCs) than the number of amplifiers.

[0008] The technical tasks to be achieved in this document are not limited to the technical tasks mentioned above, and other technical tasks not mentioned can be clearly understood by a person having ordinary knowledge in the technical field to which this document belongs from the description below.

[0009] According to one embodiment, an electronic device may include a first amplifier electrically connected to a first speaker based on a first transmission path, a second amplifier electrically connected to a second speaker different from the first speaker based on a second transmission path, a converter (ADC), a processor operatively connected to the first amplifier, the second amplifier, and the converter, and a memory storing instructions. When the instructions are executed by the processor, the electronic device may transmit a first audio signal amplified by the first amplifier to the first speaker, transmit a second audio signal amplified by the second amplifier to the second speaker, obtain a first feedback signal corresponding to the first audio signal extracted from a portion of the first transmission path and a second feedback signal corresponding to the second audio signal extracted from a portion of the second transmission path using the converter, determine first state information about the first amplifier using the first feedback signal of the first frequency band set corresponding to the first amplifier, determine second state information about the second amplifier using the second feedback signal of the second frequency band set corresponding to the second amplifier, and control the first amplifier at least partially based on the first state information and control the second amplifier at least partially based on the second state information.

[0010] According to one embodiment, a method for controlling output of an audio signal includes: transmitting an amplified first audio signal to a first speaker using a first amplifier electrically connected to the first speaker based on a first transmission path; transmitting an amplified second audio signal to a second speaker using a second amplifier electrically connected to a second speaker based on a second transmission path, which is different from the first speaker; obtaining a first feedback signal corresponding to the first audio signal extracted from a portion of the first transmission path and a second feedback signal corresponding to the second audio signal extracted from a portion of the second transmission path using a converter; confirming first state information about the first amplifier using the first feedback signal of a first frequency band set corresponding to the first amplifier; confirming second state information about the second amplifier using the second feedback signal of a second frequency band set corresponding to the second amplifier; and controlling the first amplifier based on the first state information. The operation may include at least partially controlling the second amplifier, and at least partially controlling the second amplifier based on the second state information.

[0011] According to one embodiment, a non-transitory computer-readable storage medium (or, computer program product) storing one or more programs for performing a method of controlling output of an audio signal in an electronic device (101) may be described. According to one embodiment, one or more programs, when executed by a processor of an electronic device, perform the following actions: transmitting an amplified first audio signal to a first speaker using a first amplifier electrically connected to the first speaker based on a first transmission path; transmitting an amplified second audio signal to a second speaker using a second amplifier electrically connected to a second speaker based on a second transmission path, the second speaker being different from the first speaker; obtaining a first feedback signal corresponding to the first audio signal extracted from a portion of the first transmission path and a second feedback signal corresponding to the second audio signal extracted from a portion of the second transmission path using a converter; confirming first state information about the first amplifier using the first feedback signal of the first frequency band set corresponding to the first amplifier; confirming second state information about the second amplifier using the second feedback signal of the second frequency band set corresponding to the second amplifier; The method may include instructions for performing an operation of at least partially controlling the first amplifier based on the information, and an operation of at least partially controlling the second amplifier based on the second state information.

[0012] According to one embodiment, an electronic device may use a smaller number of converters (e.g., ADCs) than the number of amplifiers in obtaining a feedback signal including status information (e.g., performance information or temperature information) related to an amplifier and a speaker. The electronic device may generate a pilot signal having a set frequency band, and may obtain a feedback signal by extracting a portion of the pilot signal. When obtaining a plurality of pilot signals, the electronic device may identify a frequency corresponding to each pilot signal, and may distinguish each pilot signal based on the identified frequency. The electronic device may identify status information (e.g., performance information or temperature information) corresponding to each amplifier based on the pilot signal distinguished by frequency. For example, the electronic device may obtain a first feedback signal for a first amplifier in a first frequency band corresponding to the first amplifier, and may identify a status (e.g., performance and / or temperature) of the first amplifier based on the first feedback signal. The electronic device may use a smaller number of converters than the number of amplifiers in obtaining the feedback signal.

[0013] According to one embodiment, an electronic device can utilize a smaller number of converters than the number of amplifiers when obtaining feedback signals for a plurality of amplifiers. The electronic device can reduce the number of converters arranged in its internal space. As a result, the number of components arranged in the internal space of the electronic device can be reduced, the internal space of the electronic device can be secured, the cost of manufacturing the electronic device can be reduced, and the current consumed by the electronic device can be efficiently managed. According to one embodiment, the current efficiency of the components constituting the electronic device can be improved.

[0014] The effects that can be obtained from the present disclosure are not limited to the effects mentioned above, and other effects that are not mentioned can be clearly understood by a person having ordinary skill in the art to which the present disclosure belongs from the description below.

[0015] In connection with the description of the drawings, the same or similar reference numerals may be used for identical or similar components.

[0016] FIG. 1 is a block diagram of an electronic device within a network environment according to one embodiment of the present disclosure.

[0017] FIG. 2 is a diagram illustrating an example in which audio signals are output using multiple speakers in an electronic device according to one embodiment of the present disclosure.

[0018] FIG. 3 is a block diagram of an electronic device according to one embodiment of the present disclosure.

[0019] FIG. 4 is a flowchart illustrating a method for controlling the output of an audio signal according to one embodiment of the present disclosure.

[0020] FIG. 5 is an exemplary circuit diagram illustrating a connection path between a plurality of amplifiers and a converter according to one embodiment of the present disclosure.

[0021] FIG. 6 is a graph that distinguishes feedback signals by frequency based on a plurality of feedback signals according to one embodiment of the present disclosure.

[0022] FIG. 7 is a graph that distinguishes feedback signals according to time intervals set based on multiple feedback signals according to one embodiment of the present disclosure.

[0023] FIG. 8 is an exemplary circuit diagram in which a plurality of amplifiers and converters are configured in one chip according to one embodiment of the present disclosure.

[0024] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings so that those skilled in the art can easily implement the present disclosure. However, the present disclosure may be implemented in various different forms and is not limited to the embodiments described herein. In connection with the description of the drawings, the same or similar reference numerals may be used for identical or similar components. Furthermore, in the drawings and related descriptions, descriptions of well-known functions and configurations may be omitted for clarity and conciseness.

[0025] FIG. 1 is a block diagram of an electronic device (101) within a network environment (100) according to various embodiments. Referring to FIG. 1, in the network environment (100), the electronic device (101) may communicate with an electronic device (102) via a first network (198) (e.g., a short-range wireless communication network), or may communicate with at least one of an electronic device (104) or a server (108) via a second network (199) (e.g., a long-range wireless communication network). According to one embodiment, the electronic device (101) may communicate with the electronic device (104) via the server (108). According to one embodiment, the electronic device (101) may include a processor (120), a memory (130), an input module (150), an audio output module (155), a display module (160), an audio module (170), a sensor module (176), an interface (177), a connection terminal (178), a haptic module (179), a camera module (180), a power management module (188), a battery (189), a communication module (190), a subscriber identification module (196), or an antenna module (197). In some embodiments, the electronic device (101) may omit at least one of these components (e.g., the connection terminal (178)), or may have one or more other components added. In some embodiments, some of these components (e.g., the sensor module (176), the camera module (180), or the antenna module (197)) may be integrated into one component (e.g., the display module (160)).

[0026] The processor (120) may, for example, execute software (e.g., a program (140)) to control at least one other component (e.g., a hardware or software component) of the electronic device (101) connected to the processor (120) and perform various data processing or calculations. According to one embodiment, as at least a part of the data processing or calculations, the processor (120) may store commands or data received from other components (e.g., a sensor module (176) or a communication module (190)) in a volatile memory (132), process the commands or data stored in the volatile memory (132), and store result data in a non-volatile memory (134). According to one embodiment, the processor (120) may include a main processor (121) (e.g., a central processing unit or an application processor) or a secondary processor (123) (e.g., a graphics processing unit, a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor)) that can operate independently or together therewith. For example, if the electronic device (101) includes a main processor (121) and a secondary processor (123), the secondary processor (123) may be configured to use less power than the main processor (121) or to be specialized for a specified function. The secondary processor (123) may be implemented separately from the main processor (121) or as a part thereof.

[0027] The auxiliary processor (123) may control at least a portion of functions or states associated with at least one component (e.g., a display module (160), a sensor module (176), or a communication module (190)) of the electronic device (101), for example, on behalf of the main processor (121) while the main processor (121) is in an inactive (e.g., sleep) state, or together with the main processor (121) while the main processor (121) is in an active (e.g., application execution) state. In one embodiment, the auxiliary processor (123) (e.g., an image signal processor or a communication processor) may be implemented as a part of another functionally related component (e.g., a camera module (180) or a communication module (190)). In one embodiment, the auxiliary processor (123) (e.g., a neural network processing unit) may include a hardware structure specialized for processing artificial intelligence models. The artificial intelligence models may be generated through machine learning. This learning can be performed, for example, in the electronic device (101) itself where artificial intelligence is performed, or can be performed through a separate server (e.g., server (108)). The learning algorithm can include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but is not limited to the examples described above. The artificial intelligence model can include multiple artificial neural network layers.The artificial neural network may be one of a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), a deep Q-network, or a combination of two or more of the above, but is not limited to the examples described above. In addition to, or alternatively to, a hardware structure, an artificial intelligence model may include a software structure.

[0028] The memory (130) can store various data used by at least one component (e.g., processor (120) or sensor module (176)) of the electronic device (101). The data can include, for example, software (e.g., program (140)) and input data or output data for commands related thereto. The memory (130) can include volatile memory (132) or non-volatile memory (134).

[0029] The program (140) may be stored as software in the memory (130) and may include, for example, an operating system (142), middleware (144), or an application (146).

[0030] The input module (150) can receive commands or data to be used in a component of the electronic device (101) (e.g., a processor (120)) from an external source (e.g., a user) of the electronic device (101). The input module (150) can include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).

[0031] The audio output module (155) can output audio signals to the outside of the electronic device (101). The audio output module (155) can include, for example, a speaker or a receiver. The speaker can be used for general purposes, such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. In one embodiment, the receiver can be implemented separately from the speaker or as part of the speaker.

[0032] The display module (160) can visually provide information to an external party (e.g., a user) of the electronic device (101). The display module (160) may include, for example, a display, a holographic device, or a projector and a control circuit for controlling the device. In one embodiment, the display module (160) may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of a force generated by the touch.

[0033] The audio module (170) can convert sound into an electrical signal, or vice versa, convert an electrical signal into sound. According to one embodiment, the audio module (170) can acquire sound through the input module (150), output sound through the sound output module (155), or an external electronic device (e.g., electronic device (102)) (e.g., speaker or headphone) directly or wirelessly connected to the electronic device (101).

[0034] The sensor module (176) can detect the operating status (e.g., power or temperature) of the electronic device (101) or the external environmental status (e.g., user status) and generate an electrical signal or data value corresponding to the detected status. According to one embodiment, the sensor module (176) can include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0035] The interface (177) may support one or more designated protocols that may be used to directly or wirelessly connect the electronic device (101) with an external electronic device (e.g., the electronic device (102)). In one embodiment, the interface (177) may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

[0036] The connection terminal (178) may include a connector through which the electronic device (101) may be physically connected to an external electronic device (e.g., electronic device (102)). According to one embodiment, the connection terminal (178) may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0037] A haptic module (179) can convert electrical signals into mechanical stimuli (e.g., vibration or movement) or electrical stimuli that a user can perceive through tactile or kinesthetic sensations. In one embodiment, the haptic module (179) can include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

[0038] The camera module (180) can capture still images and videos. According to one embodiment, the camera module (180) may include one or more lenses, image sensors, image signal processors, or flashes.

[0039] The power management module (188) can manage power supplied to the electronic device (101). According to one embodiment, the power management module (188) can be implemented, for example, as at least a part of a power management integrated circuit (PMIC).

[0040] A battery (189) may power at least one component of the electronic device (101). In one embodiment, the battery (189) may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0041] The communication module (190) may support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device (101) and an external electronic device (e.g., electronic device (102), electronic device (104), or server (108)), and the performance of communication through the established communication channel. The communication module (190) may operate independently from the processor (120) (e.g., application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module (190) may include a wireless communication module (192) (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module (194) (e.g., a local area network (LAN) communication module, or a power line communication module). Among these communication modules, the corresponding communication module can communicate with an external electronic device (104) via a first network (198) (e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network (199) (e.g., a long-range communication network such as a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN)). These various types of communication modules can be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips). The wireless communication module (192) can verify or authenticate the electronic device (101) within a communication network such as the first network (198) or the second network (199) by using subscriber information (e.g., an international mobile subscriber identity (IMSI)) stored in the subscriber identification module (196).

[0042] The wireless communication module (192) can support 5G networks and next-generation communication technologies following the 4G network, such as NR access technology (new radio access technology). The NR access technology can support high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and connection of multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency communications)). The wireless communication module (192) can support, for example, a high-frequency band (e.g., mmWave band) to achieve a high data transmission rate. The wireless communication module (192) can support various technologies for securing performance in a high-frequency band, such as beamforming, massive multiple-input and multiple-output (MIMO), full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module (192) can support various requirements specified in the electronic device (101), an external electronic device (e.g., the electronic device (104)), or a network system (e.g., the second network (199)). According to one embodiment, the wireless communication module (192) can support a peak data rate (e.g., 20 Gbps or more) for eMBB realization, a loss coverage (e.g., 164 dB or less) for mMTC realization, or a U-plane latency (e.g., 0.5 ms or less for downlink (DL) and uplink (UL), or 1 ms or less for round trip) for URLLC realization.

[0043] The antenna module (197) can transmit or receive signals or power to or from an external device (e.g., an external electronic device). In one embodiment, the antenna module (197) may include an antenna including a radiator formed of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). In one embodiment, the antenna module (197) may include a plurality of antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network, such as the first network (198) or the second network (199), may be selected from the plurality of antennas by, for example, the communication module (190). A signal or power may be transmitted or received between the communication module (190) and an external electronic device through the selected at least one antenna. In some embodiments, in addition to the radiator, another component (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as a part of the antenna module (197).

[0044] In one embodiment, the antenna module (197) may form a mmWave antenna module. In one embodiment, the mmWave antenna module may include a printed circuit board, an RFIC disposed on or adjacent a first side (e.g., a bottom side) of the printed circuit board and capable of supporting a designated high-frequency band (e.g., a mmWave band), and a plurality of antennas (e.g., an array antenna) disposed on or adjacent a second side (e.g., a top side or a side side) of the printed circuit board and capable of transmitting or receiving signals in the designated high-frequency band.

[0045] At least some of the above components can be interconnected and exchange signals (e.g., commands or data) with each other via a communication method between peripheral devices (e.g., a bus, GPIO (general purpose input and output), SPI (serial peripheral interface), or MIPI (mobile industry processor interface)).

[0046] According to one embodiment, commands or data may be transmitted or received between the electronic device (101) and an external electronic device (104) via a server (108) connected to a second network (199). Each of the external electronic devices (102 or 104) may be the same or a different type of device as the electronic device (101). According to one embodiment, all or part of the operations executed in the electronic device (101) may be executed in one or more of the external electronic devices (102, 104, or 108). For example, when the electronic device (101) is to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device (101) may, instead of or in addition to executing the function or service itself, request one or more external electronic devices to perform the function or at least a part of the service. One or more external electronic devices that receive the request may execute at least a portion of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device (101). The electronic device (101) may process the result as is or additionally and provide it as at least a portion of a response to the request. For this purpose, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used, for example. The electronic device (101) may provide an ultra-low latency service by using distributed computing or mobile edge computing, for example. In another embodiment, the external electronic device (104) may include an Internet of Things (IoT) device. The server (108) may be an intelligent server utilizing machine learning and / or a neural network. According to one embodiment, the external electronic device (104) or the server (108) may be included in the second network (199).The electronic device (101) can be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

[0047] FIG. 2 is a diagram illustrating an example in which audio signals are output using multiple speakers in an electronic device according to one embodiment of the present disclosure.

[0048] The electronic device (201) of FIG. 2 may be at least partially similar to the electronic device (101) of FIG. 1, or may further include other embodiments of the electronic device (101). In one embodiment, the electronic device (201) may include at least partially similar components to the electronic device (101) of FIG. 1.

[0049] According to one embodiment, the electronic device (201) may include a plurality of speakers (e.g., a first speaker (211) and / or a second speaker (212)). For example, the electronic device (201) may output a first audio signal through the first speaker (211) and may output a second audio signal through the second speaker (212). According to one embodiment, the number of speakers included in the electronic device (201) is not limited to a specific number, and the electronic device (201) may include at least two speakers. For example, the electronic device (201) may output a stereo audio signal based on the first speaker (211) and the second speaker (212).

[0050] According to one embodiment, the electronic device (201) may include a first amplifier (e.g., a first AMP (amplifier)) operatively or electrically connected to a first speaker (211) and a second amplifier (e.g., a second AMP) operatively or electrically connected to a second speaker (212). For example, the first amplifier may at least partially amplify an audio signal output through the first speaker (211). The electronic device (201) may amplify the first audio signal using the first amplifier and output the amplified first audio signal through the first speaker (211). The amplified first audio signal may include a first pilot signal (pilot tone signal) for checking the current status and current performance of the first amplifier. For example, the first audio signal may include the first pilot signal in a mixed form. The first audio signal may be generated as an analog signal. The electronic device (201) may extract a portion of the first pilot signal and, using a converter (e.g., an analog-digital converter (ADC)), at least partially obtain the extracted first feedback signal. The electronic device (201) may convert the first feedback signal (e.g., a first current value or a first voltage value) into a digital signal using the converter. The electronic device (201) may determine a state (e.g., a temperature) of the first amplifier based on the first feedback signal converted into a digital signal. The electronic device (201) may control the first amplifier at least partially based on the determined state of the first amplifier. For example, the electronic device (201) may control the operation of the first amplifier so that a first audio signal having optimal audio quality is output based on the first amplifier and the first speaker (211).

[0051] According to one embodiment, the electronic device (201) can obtain status information (e.g., performance information) corresponding to each amplifier by using a smaller number of converters (ADCs) than the number of individual amplifiers (e.g., the first amplifier or the second amplifier). For example, the electronic device (201) can distinguish signals amplified by the plurality of amplifiers based on a set frequency, and can individually check status information corresponding to each amplifier.

[0052] According to one embodiment, the electronic device (201) may use an amplifier to generate an audio signal and a pilot signal. For example, the audio signal may include a sound source signal output through a speaker and may be generated based on an audible frequency band. For example, the pilot signal may be output together with the audio signal and may be generated based on an inaudible frequency band. The audio signal may include a pilot signal in a mixed form.

[0053] According to one embodiment, the electronic device (201) may extract a pilot signal included in an audio signal when outputting the audio signal through a speaker. For example, the electronic device (201) may extract a pilot signal of a specific frequency band (e.g., an inaudible frequency band) from a portion of a transmission path formed between an amplifier and a speaker. For example, a first audio signal may include a first pilot signal of a first frequency band, and a second audio signal may include a second pilot signal of a second frequency band. The first frequency band of the first pilot signal and the second frequency band of the second pilot signal may be determined based on the inaudible frequency band. For example, the pilot signal includes a signal amplified by an amplifier, and the electronic device (201) may determine a status (e.g., temperature) of the amplifier based on the pilot signal. For example, the extracted pilot signal may be referred to as a feedback signal for the amplifier.

[0054] According to one embodiment, the electronic device (201) may obtain a first feedback signal based on a first pilot signal, and may obtain a second feedback signal based on a second pilot signal. When the electronic device (201) receives the first feedback signal, the electronic device (201) may determine first state information corresponding to the first amplifier based on the first feedback signal. When the electronic device (201) receives the second feedback signal, the electronic device (201) may determine second state information corresponding to the second amplifier based on the first feedback signal. According to one embodiment, the first frequency band and the second frequency band may be different frequency bands. According to one embodiment, the first frequency band and the second frequency band may be determined based on an “inaudible frequency band.” The inaudible frequency band may include frequencies of sound waves that cannot be heard by the human ear.

[0055] According to one embodiment, the electronic device (201) can obtain status information (e.g., performance information and / or temperature information) corresponding to each amplifier based on a smaller number of converters than at least two amplifiers. For example, the electronic device (201) can obtain a first feedback signal based on a first pilot signal amplified by a first amplifier, and can obtain a second feedback signal based on a second pilot signal amplified by a second amplifier. The electronic device (201) can obtain first status information corresponding to the first amplifier based on the first feedback signal, and can obtain second status information corresponding to the second amplifier based on the second feedback signal. According to one embodiment, the electronic device (201) can at least partially control the first amplifier based on the first status information, and can at least partially control the second amplifier based on the second status information.

[0056] FIG. 3 is a block diagram of an electronic device according to one embodiment of the present disclosure.

[0057] The electronic device (101) of FIG. 3 may be at least partially similar to the electronic device (101) of FIG. 1 and the electronic device (201) of FIG. 2, or may further include other embodiments of the electronic devices (101, 201). According to one embodiment, the electronic device (101) may include at least partially similar components to the electronic device (101) of FIG. 1 and the electronic device (201) of FIG. 2.

[0058] Referring to FIG. 3, the electronic device (101) may include a processor (120) (e.g., the processor (120) of FIG. 1), a memory (130) (e.g., the memory (130) of FIG. 1), an audio module (170) (e.g., the audio module (170) of FIG. 1), and / or an audio output module (155) (e.g., the audio output module (155) of FIG. 1). For example, the audio output module (155) may include a plurality of speakers (e.g., a first speaker (311), a second speaker (312), and / or a third speaker (313)). For example, the audio module (170) may include a plurality of amplifiers (e.g., a first amplifier (321), a second amplifier (322), and / or a third amplifier (323)). The memory (130) of the electronic device (101) may store audio signals amplified by a plurality of amplifiers, and frequency information (331) related to the frequency corresponding to each of the audio signals.

[0059] According to one embodiment, the processor (120) of the electronic device (101) may execute a program stored in the memory (130) (e.g., the program (140) of FIG. 1, an application that provides a function of detecting a user input) to control at least one other component (e.g., a hardware or software component) and perform various data processing or calculations. For example, the processor (120) may execute a program related to generation and output of an audio signal (e.g., a music-related program and / or a music-related application), and based on the program, may output an audio signal using a plurality of speakers (311, 312, 313). The processor (120) may output a first audio signal based on the first speaker (311), a second audio signal based on the second speaker (312), and a third audio signal based on the third speaker (313). According to one embodiment, the electronic device (101) can output an audio signal having an optimized sound quality for each speaker. According to one embodiment, the processor (120) can be operatively, functionally, and / or electrically connected to at least one amplifier included in the memory (130) and / or the audio module (170). Each of the at least one amplifier can be operatively, functionally, and / or electrically connected to one speaker.

[0060] According to one embodiment, the memory (130) of the electronic device (101) may store frequency information (331) related to a frequency set for an audio signal. When generating an audio signal, the electronic device (101) may generate the audio signal based on the set frequency. For example, the processor (120) may use an amplifier to implement an audio signal (e.g., a pilot signal) corresponding to the set frequency and output the audio signal through a speaker. According to one embodiment, the processor (120) may implement an audio signal (e.g., a pilot signal) corresponding to the set frequency based on the frequency information (331). For example, the audio signal may include a pilot signal mixed therein. For example, the processor (120) may generate a first pilot signal having a first frequency to be transmitted to a first amplifier (321) and output a first audio signal including the first pilot signal through a first speaker (311). The processor (120) can generate a second pilot signal having a second frequency different from the first frequency to be transmitted to the second amplifier (322), and output a second audio signal including the second pilot signal through the second speaker (312). According to one embodiment, the first frequency and the second frequency can be determined based on an inaudible frequency band.

[0061] According to one embodiment, the processor (120) may extract a feedback signal corresponding to the pilot signal in relation to the output of the pilot signal, and may use the feedback signal to check status information (e.g., temperature information) related to the amplifier and the speaker. For example, the status information may include status information (e.g., performance information and / or temperature information) related to the amplifier and the speaker. When a plurality of audio signals are output through a plurality of speakers, the processor (120) may extract a pilot signal corresponding to each audio signal. For example, when the first audio signal is output through the first speaker (311), the processor (120) may extract a first pilot signal (e.g., a first feedback signal) included in the first audio signal from a portion of the first transmission path (341) between the first amplifier (321) and the first speaker (311). When the second audio signal is output through the second speaker (312), the processor (120) can extract a second pilot signal (e.g., a second feedback signal) included in the second audio signal from a portion of the second transmission path (342) between the second amplifier (322) and the second speaker (312). When the third audio signal is output through the third speaker (313), the processor (120) can extract a third pilot signal (e.g., a third feedback signal) included in the third audio signal from a portion of the third transmission path (343) between the third amplifier (323) and the third speaker (313).

[0062] According to one embodiment, the point from which the first pilot signal, the second pilot signal, and / or the third pilot signal are extracted may be determined as a position relatively close to the speaker based on each transmission path. According to one embodiment, the electronic device (101) may more accurately determine status information (e.g., temperature information) for the amplifier by extracting the pilot signal from a point relatively close to the speaker within the transmission path formed between the amplifier and the speaker. For example, the extracted pilot signal may be referred to as a feedback signal. According to one embodiment, the processor (120) may determine a current value and / or voltage value corresponding to the feedback signal, and may infer a status (e.g., temperature) for the amplifier based on the determined current value and / or voltage value. The processor (120) may at least partially control the operation of the amplifier based on the status of the amplifier so that an audio signal amplified by the amplifier implements optimal sound quality. The processor (120) may adjust the current and voltage supplied to the amplifier based on the status (e.g., temperature) of the amplifier. For example, the processor (120) can at least partially control the amplifier so that the temperature of the amplifier does not exceed a limit temperature.

[0063] According to one embodiment, when the processor (120) receives a plurality of feedback signals (e.g., a first feedback signal corresponding to the first amplifier (321), a second feedback signal corresponding to the second amplifier (322), and / or a third feedback signal corresponding to the third amplifier (323), the processor (120) may distinguish each feedback signal based on the frequency information (331). For example, the processor (120) may distinguish and recognize a first feedback signal implemented based on a first frequency, a second feedback signal implemented based on a second frequency, and / or a third feedback signal implemented based on a third frequency. According to one embodiment, the first frequency, the second frequency, and / or the third frequency may be determined based on an “inaudible frequency band” (e.g., a frequency band of sound waves that cannot be heard by the human ear). The processor (120) can distinguish and recognize a first feedback signal corresponding to a first audio signal, a second feedback signal corresponding to a second audio signal, and / or a third feedback signal corresponding to a third audio signal.

[0064] According to one embodiment, the electronic device (101) can select and recognize a plurality of feedback signals based on a converter (301) (e.g., an analog-digital converter (ADC), a conversion device that converts an analog signal into a digital signal). For example, the electronic device (101) may include a smaller number of converters (301) than the number of amplifiers (e.g., AMPs), and can select and recognize a plurality of feedback signals based on the converters (301). According to one embodiment, the processor (120) can extract a first feedback signal corresponding to a first pilot signal from a portion of a first transmission path (341) connecting a first amplifier (321) and a first speaker (311), and can convert the extracted first feedback signal into a digital signal through the converter (301). The processor (120) can extract a second feedback signal corresponding to a second pilot signal from a portion of a second transmission path (342) connecting a second amplifier (322) and a second speaker (312), and can convert the extracted second feedback signal into a digital signal through a converter (301). The processor (120) can extract a third feedback signal corresponding to a third pilot signal from a portion of a third transmission path (343) connecting a third amplifier (323) and a third speaker (313), and can convert the extracted third feedback signal into a digital signal through a converter (301).

[0065] According to one embodiment, the electronic device (101) may convert a feedback signal from an analog signal to a digital signal through a converter (301), and may check the status information of an amplifier corresponding to each feedback signal. For example, a first feedback signal having a first frequency may include first status information corresponding to a first amplifier (321), a second feedback signal having a second frequency may include second status information corresponding to a second amplifier (322), and a third feedback signal having a third frequency may include third status information corresponding to a third amplifier (323). The first frequency, the second frequency, and / or the third frequency may be set to different frequencies. According to one embodiment, the processor (120) may check the first status information based on the first feedback signal, the second status information based on the second feedback signal, and the third status information based on the third feedback signal.

[0066] According to one embodiment, the processor (120) can check the voltage value and current value of the feedback signal, and based on the voltage value and the current value, can calculate the resistance value and temperature corresponding to the corresponding amplifier. For example, if the resistance value is measured to be high, the temperature of the corresponding amplifier can be determined to be relatively high, and if the resistance value is measured to be low, the temperature of the corresponding amplifier can be determined to be relatively low. The processor (120) can check the status information (e.g., performance information) of the corresponding amplifier based on the resistance value and the temperature. According to one embodiment, a limit temperature can be set for each of the plurality of amplifiers (321, 322, 323), and each amplifier can be controlled within a range not exceeding the limit temperature. For example, the electronic device (101) can check a first limit temperature set corresponding to the first amplifier (321) and adjust a current value and / or a voltage value supplied to the first amplifier (321) so that the temperature of the first amplifier (321) is maintained below the first limit temperature. For another example, the electronic device (101) can check a second limit temperature set corresponding to the second amplifier (322) and adjust a current value and / or a voltage value supplied to the second amplifier (322) so that the temperature of the second amplifier (322) is maintained below the second limit temperature. For another example, the electronic device (101) can check a third limit temperature set corresponding to the third amplifier (323) and adjust a current value and / or a voltage value supplied to the third amplifier (323) so that the temperature of the third amplifier (323) is maintained below the third limit temperature. For example, the electronic device (101) can set a limit temperature corresponding to each amplifier and store information related to the limit temperature in the memory (130).According to one embodiment, the electronic device (101) can adjust the current value and / or voltage value supplied to the amplifier based on a limit temperature set corresponding to the amplifier so that the audio signal generated through the amplifier implements optimal sound quality.

[0067] According to one embodiment, the electronic device (101) can check status information (e.g., performance information and / or temperature information) corresponding to each of the plurality of built-in amplifiers (321, 322, 323), and individually control each of the plurality of amplifiers (321, 322, 323) based on the checked status information. The electronic device (101) can individually control each of the amplifiers so that each of the amplifiers does not exceed a set limit temperature. The electronic device (101) can at least partially control each of the amplifiers so that each of the amplifiers generates an optimized audio signal (e.g., an audio signal having optimal sound quality).

[0068] According to one embodiment, the processor (120) can at least partially control the first amplifier (321) based on the first state information, can at least partially control the second amplifier (322) based on the second state information, and can at least partially control the third amplifier (323) based on the third state information.

[0069] According to one embodiment, the electronic device (101) can check the status information corresponding to each amplifier based on a smaller number of converters (301) than a plurality of amplifiers (321, 322, 323). For example, the converter (301) can include a first converter and a second converter. For example, in case the second converter is included in addition to the first converter (e.g., converter (301)), the processor (120) can use the first converter to receive feedback signals corresponding to the first amplifier (321) and the second amplifier (322), and can also use the second converter to receive feedback signals corresponding to the third amplifier (323). According to one embodiment, the number of converters (301) is not limited to one, and can be determined to be a number less than the number of amplifiers.

[0070] According to one embodiment, the plurality of amplifiers included in the electronic device (101) are at least two amplifiers, but are not limited to a specific number. The number of converters (301) included in the electronic device (101) is relatively smaller than the number of amplifiers, and is not limited to a specific number.

[0071] According to one embodiment, the electronic device (101) may receive a first feedback signal based on a first time interval when obtaining first state information according to a first feedback signal of a first frequency. The electronic device (101) may receive a second feedback signal based on a second time interval when obtaining second state information according to a second feedback signal of a second frequency. The electronic device (101) may receive a third feedback signal based on a third time interval when obtaining third state information according to a third feedback signal of a third frequency. For example, the processor (120) may set different time intervals for each amplifier, and may receive a feedback signal corresponding to the amplifier according to the set time interval. According to one embodiment, the electronic device (101) may receive a plurality of feedback signals based on different time intervals, and may individually recognize the plurality of feedback signals. The electronic device (101) can select and recognize status information corresponding to each of a plurality of amplifiers (321, 322, 323).

[0072] According to one embodiment, the electronic device (101) may convert a feedback signal corresponding to an analog signal into a digital signal using a converter (301), and may check status information (e.g., performance information and / or temperature information) for the amplifier based on the feedback signal converted into the digital signal. According to one embodiment, a plurality of amplifiers (321, 322, 323) and a relatively smaller number of converters (301) than the number of amplifiers may be implemented in a form included in one chipset. The converter (301) may be electrically connected to each of the plurality of amplifiers (321, 322, 323). For example, the converter (301) may be electrically connected to a portion of a first transmission path (341) connecting a first amplifier (321) and a first speaker (311), may be electrically connected to a portion of a second transmission path (342) connecting a second amplifier (322) and a second speaker (312), and may be electrically connected to a portion of a third transmission path (343) connecting a third amplifier (323) and a third speaker (313). In one embodiment, a point at which a feedback signal is extracted may be determined as a position that is relatively close to the speaker based on each transmission path. For example, the close position may include a point that is relatively close to the speaker based on a midpoint of the transmission path. For example, the close position may include a point within a set distance based on a position of the speaker. According to one embodiment, the electronic device (101) can use a smaller number of converters (301) than a plurality of amplifiers to determine status information corresponding to each of the plurality of amplifiers.

[0073] According to one embodiment, the audio module (170) may include a plurality of amplifiers (321, 322, 323) and / or a relatively smaller number of converters (301) than the amplifiers (321, 322, 323). The processor (120) may amplify an audio signal based on the plurality of amplifiers (321, 322, 323) included in the audio module (170) and output the amplified audio signal through the audio output module (155).

[0074] According to one embodiment, the audio output module (155) may include a plurality of speakers (311, 312, 313). For example, the plurality of speakers (311, 312, 313) may each be individually connected to an amplifier. The first speaker (311) may be electrically connected to the first amplifier (321) along a first transmission path (341). The second speaker (312) may be electrically connected to the second amplifier (322) along a second transmission path (342). The third speaker (313) may be electrically connected to the third amplifier (323) along a third transmission path (343).

[0075] According to one embodiment, the electronic device (101) can check status information (e.g., performance information and / or temperature information) corresponding to each of a plurality of amplifiers (321, 322, 323), and individually control each of the plurality of amplifiers (321, 322, 323) so that the amplifier exhibits efficient performance while the amplifier is not damaged (e.g., the temperature of the amplifier does not exceed a set limit temperature).

[0076] According to one embodiment, the electronic device (101) may utilize a smaller number of converters (301) than the number of the plurality of amplifiers (321, 322, 323) when receiving feedback signals for the plurality of amplifiers (321, 322, 323). The electronic device (101) may reduce the number of converters (301) arranged in the internal space. As a result, the components arranged in the internal space of the electronic device (101) may be reduced, the internal space of the electronic device (101) may be secured, the cost of manufacturing the electronic device (101) may be reduced, and the current consumed by the electronic device (101) may be efficiently managed. According to one embodiment, the current efficiency of the components constituting the electronic device (101) may be improved.

[0077] According to one embodiment, the electronic device (101) may include a first amplifier (321) electrically connected to a first speaker (311) based on a first transmission path (341), a second amplifier (322) electrically connected to a second speaker (312) different from the first speaker (311) based on a second transmission path (342), a converter (301), a processor (120) operatively connected to the first amplifier (321), the second amplifier (322) and the converter (301), and a memory (130) storing instructions. When the above instructions are executed by the processor (120), the electronic device (101) transmits a first audio signal amplified by the first amplifier (321) to the first speaker (311), transmits a second audio signal amplified by the second amplifier (322) to the second speaker (312), obtains a first feedback signal corresponding to the first audio signal extracted from a part of the first transmission path (341) and a second feedback signal corresponding to the second audio signal extracted from a part of the second transmission path (342) using the converter (301), and confirms first status information for the first amplifier (321) using the first feedback signal of the first frequency band set corresponding to the first amplifier (321), and determines first status information for the first amplifier (321) using the second feedback signal of the second frequency band set corresponding to the second amplifier (322). It is possible to check second state information for the second amplifier (322), at least partially control the first amplifier (321) based on the first state information, and at least partially control the second amplifier (322) based on the second state information.

[0078] According to one embodiment, the electronic device (101) may further include a third amplifier (323) electrically connected to a third speaker (313) different from the first speaker (311) and the second speaker (312) based on a third transmission path (343). When the above instructions are executed by the processor (120), the electronic device (101) transmits a third audio signal amplified by the third amplifier (323) to the third speaker (313), obtains a third feedback signal corresponding to the third audio signal from a part of the third transmission path (343) based on the converter (301), and uses the third feedback signal of the third frequency band set corresponding to the third amplifier (323) to check third state information for the third amplifier (323), and controls the third amplifier (323) at least partially based on the checked third state information.

[0079] According to one embodiment, the converter (301) may further include a first converter and a second converter. When the instructions are executed by the processor (120), the electronic device (101) may obtain, based on at least one of the first converter and the second converter, the first feedback signal corresponding to the first audio signal in a part of the first transmission path (341), the second feedback signal corresponding to the second audio signal in a part of the second transmission path (342), and the third feedback signal corresponding to the third audio signal in a part of the third transmission path (343), and may determine first state information for the first amplifier (321) based on the first feedback signal corresponding to the first frequency band, determine second state information for the second amplifier (322) based on the second feedback signal corresponding to the second frequency band, and determine third state information for the third amplifier (323) based on the third feedback signal corresponding to the third frequency band.

[0080] According to one embodiment, the first frequency band, the second frequency band, and the third frequency band may be determined based on an inaudible frequency band.

[0081] According to one embodiment, the first state information may include a first current value and a first voltage value identified based on the first feedback signal, the second state information may include a second current value and a second voltage value identified based on the second feedback signal, and the third state information may include a third current value and a third voltage value identified based on the third feedback signal.

[0082] According to one embodiment, when the instructions are executed by the processor (120), the electronic device (101) may calculate a first temperature corresponding to the first amplifier (321) based on the first current value and the first voltage value included in the first state information, and adjust a current value and a voltage value applied to the first amplifier (321) so that the calculated first temperature is maintained below a first limit temperature set corresponding to the first amplifier.

[0083] According to one embodiment, when the instructions are executed by the processor (120), the electronic device (101) may, in response to obtaining the first feedback signal, identify a first time interval corresponding to the first amplifier (321) and a second time interval corresponding to the second amplifier (322), and, based on the first feedback signal, identify the first state information according to the first time interval corresponding to the first amplifier (321), and, based on the second feedback signal, identify the second state information according to the second time interval corresponding to the second amplifier (322).

[0084] According to one embodiment, the electronic device (101) may further include at least one band filter for detecting a signal corresponding to a specific frequency band. When the instructions are executed by the processor (120), the electronic device (101) may, based on the at least one band filter, identify the first state information included in the first feedback signal and the second state information included in the second feedback signal, convert an analog signal corresponding to the first state information into a digital signal based on the converter (301), convert an analog signal corresponding to the second state information into a digital signal based on the converter (301), and at least partially control the first amplifier (321) based on the first state information converted into the digital signal, and at least partially control the second amplifier (322) based on the second state information converted into the digital signal.

[0085] According to one embodiment, when the instructions are executed by the processor (120), the electronic device (101) may convert the first feedback signal from an analog signal to a digital signal based on the converter (301), and, based on the first feedback signal converted into the digital signal, determine the first state information corresponding to the first frequency band set corresponding to the first amplifier (321), convert the second feedback signal from an analog signal to a digital signal based on the converter (301), and, based on the second feedback signal converted into the digital signal, determine the second state information corresponding to the second frequency band set corresponding to the second amplifier (322), and, based on the first state information, control the first amplifier (321) at least partially, and based on the second state information, control the second amplifier (322) at least partially.

[0086] According to one embodiment, the first amplifier (321), the second amplifier (322) and the converter (301) may be included in one chipset.

[0087] According to one embodiment, the number of converters operatively connected to the amplifiers included in the electronic device (101) may be less than the number of the amplifiers.

[0088] FIG. 4 is a flowchart illustrating a method for controlling the output of an audio signal according to one embodiment of the present disclosure.

[0089] In the following examples, the operations may be performed sequentially, but are not necessarily sequential. For example, the order of the operations may be changed, and at least two operations may be performed in parallel.

[0090] According to one embodiment, operations 401 to 413 may be understood to be performed by a processor (e.g., processor (120) of FIG. 3) of an electronic device (e.g., electronic device (101) of FIG. 1, electronic device (201) of FIG. 2). The electronic device of FIG. 4 may be at least partially similar to the electronic device (101) of FIG. 1 and the electronic device (201) of FIG. 2, or may further include other embodiments of the electronic device (101).

[0091] According to one embodiment, the processor (120) of the electronic device (101) may execute a program related to generation and output of an audio signal (e.g., a music-related program and / or a music-related application), and based on the program, control output of the audio signal through a plurality of speakers (e.g., speakers (311, 312, 313) of FIG. 3). According to one embodiment, the electronic device (101) may use a smaller number of converters than the number of amplifiers (e.g., amplifiers (321, 322, 323) of FIG. 3), and check status information (e.g., performance information) corresponding to each amplifier.

[0092] In operation 401, the processor (120) may transmit a first audio signal amplified by a first amplifier (e.g., the first amplifier (321) of FIG. 3) to a first speaker (e.g., the first speaker (311) of FIG. 3). For example, the processor (120) may generate a first audio signal including a first pilot signal of a set first frequency, and output the first audio signal through the first speaker (311). The first amplifier (321) and the first speaker (311) may be connected along a first transmission path (e.g., the first transmission path (341) of FIG. 3).

[0093] In operation 403, the processor (120) may transmit a second audio signal amplified by a second amplifier (e.g., the second amplifier (322) of FIG. 3) to a second speaker (e.g., the second speaker (312) of FIG. 3). For example, the processor (120) may generate a second audio signal including a second pilot signal of a second frequency set differently from the first frequency, and output the second audio signal through the second speaker (312). The second amplifier (322) and the second speaker (312) may be connected along a second transmission path (e.g., the second transmission path (342) of FIG. 3).

[0094] In operation 405, the processor (120) may obtain (e.g., receive) a first feedback signal extracted from a first audio signal and a second feedback signal extracted from a second audio signal using a converter (e.g., converter (301) of FIG. 3). According to one embodiment, the first feedback signal and the second feedback signal may be set based on an “inaudible frequency band” (e.g., a frequency band of sound waves that cannot be heard by the human ear, approximately 0 Hz to 60 Hz). For example, the converter (301) may be electrically connected to a portion of each of the first transmission path (341) and the second transmission path (342). The processor (120) can extract a first feedback signal from a part of the first transmission path (341), extract a second feedback signal from a part of the second transmission path (342), and obtain the extracted first feedback signal and second feedback signal through the converter (301). For example, the processor (120) can confirm a first current value and / or a first voltage value corresponding to the first feedback signal based on the first feedback signal. The processor (120) can infer (e.g., confirm) status information (e.g., performance information and / or temperature information) of the first amplifier (321) based on the confirmed first current value and / or first voltage value. For example, the processor (120) can confirm a second current value and / or a second voltage value corresponding to the second feedback signal based on the second feedback signal. The processor (120) can infer (e.g., confirm) status information (e.g., performance information, and / or temperature information) of the second amplifier (322) based on the second current value and / or second voltage value confirmed above.According to one embodiment, the electronic device (101) can receive feedback signals (e.g., a first feedback signal and / or a second feedback signal) corresponding to each of the amplifiers (321, 322) based on a smaller number of converters (301) than the number of the plurality of amplifiers (321, 322). According to one embodiment, the electronic device (101) can convert the received feedback signal from an analog signal to a digital signal using the converter (301), and can check status information about the amplifier based on the converted digital signal.

[0095] In operation 407, the processor (120) can check the first status information for the first amplifier (321) based on the first feedback signal. For example, the processor (120) can obtain the first current value and the first voltage value related to the first amplifier (321) based on the first feedback signal, and can calculate the first resistance value using the first current value and the first voltage value. The processor (120) can check the status information of the first amplifier (321) based on the first resistance value. For example, the processor (120) can determine whether the first amplifier (321) is exhibiting a certain level of performance compared to the overall performance.

[0096] In operation 409, the processor (120) can check the second status information for the second amplifier (322) based on the second feedback signal. For example, the processor (120) can obtain the second current value and the second voltage value related to the second amplifier (322) based on the second feedback signal, and can calculate the second resistance value using the second current value and the second voltage value. The processor (120) can check the status information of the second amplifier (322) based on the second resistance value. For example, the processor (120) can determine whether the second amplifier (322) is exhibiting a certain level of performance compared to the overall performance.

[0097] In operation 411, the processor (120) may control the first amplifier (321) based on the first state information identified in operation 407. For example, the processor (120) may at least partially control the first amplifier (321) so that the first amplifier (321) exhibits optimized efficiency (e.g., implements an audio signal having optimal sound quality). For example, the processor (120) may adjust at least one of a current value and / or a voltage value applied to the first amplifier (321). For example, the processor (120) may determine a current value and / or a voltage value supplied to the first amplifier (321) within a range in which the first amplifier (321) is not damaged, taking into account a current temperature of the first amplifier (321). According to one embodiment, a limit temperature may be set for each of the plurality of amplifiers, and each amplifier may be controlled within a range in which the limit temperature is not exceeded. For example, the electronic device (101) can check the first limit temperature set corresponding to the first amplifier (321), and adjust the current value and / or voltage value supplied to the first amplifier (321) so that the temperature of the first amplifier (321) is maintained below the first limit temperature.

[0098] According to one embodiment, the processor (120) may partially control the first amplifier (321) so that the sound quality (e.g., voice quality, and / or the degree of clarity and sharpness of the audio signal) of the first audio signal has an optimized sound quality. The processor (120) may at least partially control the first amplifier (321) by taking into account the performance of the first speaker (311) and the performance of the first amplifier (321).

[0099] In operation 413, the processor (120) may control the second amplifier (322) based on the second state information identified in operation 409. For example, the processor (120) may at least partially control the second amplifier (322) so that the second amplifier (322) may exhibit optimized efficiency (e.g., implement an audio signal having optimal sound quality). For example, the processor (120) may adjust at least one of a current value and / or a voltage value applied to the second amplifier (322). For example, the processor (120) may determine a current value and / or a voltage value supplied to the second amplifier (322) within a range in which the second amplifier (322) is not damaged, taking into account the current temperature of the second amplifier (322). For example, a second limit temperature corresponding to the second amplifier (322) is set, and the electronic device (101) can control the second amplifier (322) within a range in which the temperature of the second amplifier (322) does not exceed the second limit temperature. The electronic device (101) can adjust the current value and / or voltage value supplied to the second amplifier (322) so that the temperature of the second amplifier (322) is maintained below the second limit temperature.

[0100] According to one embodiment, the processor (120) may partially control the second amplifier (322) such that the sound quality (e.g., voice quality, and / or the degree of clarity and sharpness of the audio signal) of the second audio signal has an optimized sound quality. The processor (120) may at least partially control the second amplifier (322) by taking into account the performance of the second speaker (312) and the performance of the second amplifier (322).

[0101] According to one embodiment, the electronic device (101) can control the first amplifier (321) according to a combination between the first speaker (311) and the first amplifier (321), and can control the second amplifier (322) according to a combination between the second speaker (312) and the second amplifier (322). According to one embodiment, the electronic device (101) can utilize a smaller number of transducers (301) than the number of the plurality of amplifiers (321, 322) in obtaining feedback signals for the plurality of amplifiers (321, 322). The electronic device (101) can reduce the number of transducers (301) arranged in the internal space.

[0102] According to one embodiment, the electronic device (101) is not limited to a specific number of amplifiers and converters. For example, in addition to the first amplifier (321) and the second amplifier (322), the electronic device (101) may further include a third amplifier (e.g., the third amplifier (323) of FIG. 3), and in addition to the converter (301), may further include another converter. In one embodiment, the electronic device (101) may include a smaller number of converters (301) than the number of amplifiers (321, 322, 323).

[0103] According to one embodiment, the electronic device (101) can reduce the number of transducers arranged in the internal space, thereby securing the internal space of the electronic device (101). The cost of manufacturing the electronic device (101) can be reduced. The electronic device (101) can more efficiently manage the power consumption associated with the amplifier. According to one embodiment, the electronic device (101) can at least partially control the output of an audio signal, and provide an audio signal with optimal sound quality to a user.

[0104] According to one embodiment, the electronic device (101) may include at least one bandpass filter for detecting a signal (e.g., a feedback signal) corresponding to a specific frequency band. For example, in the first embodiment, when receiving a plurality of feedback signals, the processor (120) may use the at least one bandpass filter to distinguish the plurality of feedback signals according to a set frequency, and may perform a conversion function (e.g., a function of converting an analog signal into a digital signal using the converter (301), an ADC function) on the distinguished feedback signals. In the first embodiment, the electronic device (101) may include many components related to each feedback signal, but may have a small amount of data processing (e.g., a data operation amount), so that the processing speed may be fast. As another example, in the second embodiment, when receiving a plurality of feedback signals, the processor (120) may first perform a conversion function (e.g., an ADC function) on the plurality of feedback signals, and then use the at least one bandpass filter to distinguish the plurality of feedback signals according to a set frequency. In the second embodiment, the electronic device (101) may include relatively fewer parts than the first embodiment, but may have a large amount of data processing (e.g., data operation amount) and thus may have a slow processing speed.

[0105] According to one embodiment, the electronic device (101) may use various signal detection methods to detect signals corresponding to multiple frequency bands for each frequency. The electronic device (101) may include a relatively smaller number of converters than the number of amplifiers, and may detect status information (e.g., performance information and / or temperature information) corresponding to each amplifier based on the converters.

[0106] FIG. 5 is an exemplary circuit diagram illustrating a connection path between a plurality of amplifiers and a converter according to one embodiment of the present disclosure.

[0107] The example circuit diagram (500) illustrated in FIG. 5 may be at least partially similar to the circuit diagrams included in the electronic device (101) of FIG. 1 and the electronic device (201) of FIG. 2, or may further include other embodiments of the electronic device (101). According to one embodiment, the example circuit diagram (500) may include an electrical path (e.g., a transmission path) that is at least partially similar to the electrical connection circuit diagram implemented between an audio module (e.g., an audio module (170) of FIG. 1) and an audio output module (e.g., an audio output module (155) of FIG. 1) included in the electronic device (101).

[0108] Referring to FIG. 5, the electronic device (101) may include a processor (120) (e.g., the processor (120) of FIG. 3), a plurality of speakers (311, 312, 313, 314), a plurality of amplifiers (321, 322, 323, 324) electrically connected to each of the plurality of speakers, and / or a relatively smaller number of converters (e.g., the converter (301) of FIG. 3) than the plurality of amplifiers (321, 322, 323, 324).

[0109] Referring to FIG. 5, a first amplifier (321) may be electrically connected to a first speaker (311) along a first transmission path (341), and may be electrically connected to a converter (301) at a portion of the first transmission path (341). For example, the processor (120) may generate a first audio signal to be transmitted to the first amplifier (321), and may transmit the first audio signal to the first speaker (311) along the first transmission path (341). In one embodiment, the first audio signal may include a first pilot signal of a first frequency. For example, a first feedback signal based on the first pilot signal may travel to the converter (301) along a first feedback path (511) connected from a portion of the first transmission path (341) to the converter (301). For example, a first audio signal may be composed of a (+) signal and a (-) signal. A first transmission path (341) may include about two electrical paths, and a (+) signal of the first audio signal may travel to a first speaker (311) along the first electrical path, and a (-) signal of the first audio signal may travel to the first speaker (311) along a second electrical path. A first feedback signal may have a first frequency (f1). According to one embodiment, the processor (120) may receive the first feedback signal converted into a digital signal based on the converter (301), and may obtain first state information. For example, the first state information may include a first current value and / or a first voltage value corresponding to the first feedback signal. The processor (120) can calculate a first resistance value based on the first current value and / or the first voltage value, and can check status information (e.g., performance information and / or temperature information) for the first amplifier (321) based on the first resistance value.The processor (120) can at least partially control the first amplifier (321) based on the status information about the first amplifier (321) so that the first amplifier (321) and the first speaker (311) implement optimal sound quality.

[0110] Referring to FIG. 5, the second amplifier (322) may be electrically connected to the second speaker (312) along a second transmission path (342) and may be electrically connected to the converter (301) at a portion of the second transmission path (342). For example, the processor (120) may generate a second audio signal to be transmitted to the second amplifier (322) and may transmit the second audio signal to the second speaker (312) along the second transmission path (342). In one embodiment, the second audio signal may include a second pilot signal having a second frequency. For example, a second feedback signal based on the second pilot signal may travel to the converter (301) along a second feedback path (512) connected from a portion of the second transmission path (342) to the converter (301). The second feedback signal may have a second frequency (f2). According to one embodiment, the processor (120) may receive the second feedback signal converted into a digital signal based on the converter (301) and obtain second state information. For example, the second state information may include a second current value and / or a second voltage value corresponding to the second feedback signal. The processor (120) may calculate a second resistance value based on the second current value and / or the second voltage value, and may check state information (e.g., performance information and / or temperature information) for the second amplifier (322) based on the second resistance value. The processor (120) may at least partially control the second amplifier (322) based on the state information for the second amplifier (322) so that the second amplifier (322) and the second speaker (312) implement optimal sound quality.

[0111] Referring to FIG. 5, a third amplifier (323) may be electrically connected to a third speaker (313) along a third transmission path (343) and may be electrically connected to a converter (301) at a portion of the third transmission path (343). For example, the processor (120) may generate a third audio signal to be transmitted to the third amplifier (323) and may transmit the third audio signal to the third speaker (313) along the third transmission path (343). In one embodiment, the third audio signal may include a third pilot signal having a third frequency. For example, a third feedback signal based on the third pilot signal may travel to the converter (301) along a third feedback path (513) connected from a portion of the third transmission path (343) to the converter (301). The third feedback signal may have a third frequency (f3). According to one embodiment, the processor (120) may receive the third feedback signal converted into a digital signal based on the converter (301) and obtain third state information. For example, the third state information may include a third current value and / or a third voltage value corresponding to the third feedback signal. The processor (120) may calculate a third resistance value based on the third current value and / or the third voltage value, and may check state information (e.g., performance information and / or temperature information) for the third amplifier (323) based on the third resistance value. The processor (120) may at least partially control the third amplifier (323) based on the state information for the third amplifier (323) so that the third amplifier (323) and the third speaker (313) implement optimal sound quality.

[0112] Referring to FIG. 5, the fourth amplifier (324) may be electrically connected to the fourth speaker (314) along a fourth transmission path (344) and may be electrically connected to the converter (301) at a portion of the fourth transmission path (344). For example, the processor (120) may generate a fourth audio signal to be transmitted to the fourth amplifier (324) and may transmit the fourth audio signal to the fourth speaker (314) along the fourth transmission path (344). In one embodiment, the fourth audio signal may include a fourth pilot signal having a fourth frequency. For example, a fourth feedback signal based on the fourth pilot signal may travel to the converter (301) along a fourth feedback path (514) connected from a portion of the fourth transmission path (344) to the converter (301). The fourth feedback signal may have a fourth frequency (f4). According to one embodiment, the processor (120) may receive the fourth feedback signal converted into a digital signal based on the converter (301) and obtain fourth state information. For example, the fourth state information may include a fourth current value and / or a fourth voltage value corresponding to the fourth feedback signal. The processor (120) may calculate a fourth resistance value based on the fourth current value and / or the fourth voltage value, and may check state information (e.g., performance information and / or temperature information) for the fourth amplifier (324) based on the fourth resistance value. The processor (120) may at least partially control the fourth amplifier (324) based on the state information for the fourth amplifier (324) so ​​that the fourth amplifier (324) and the fourth speaker (314) implement optimal sound quality.

[0113] According to one embodiment, a transmission path implemented between an amplifier and a speaker may include a first electrical path for a positive (+) signal of an audio signal to travel and a second electrical path for a negative (-) signal of the audio signal to travel. According to one embodiment, a point from which a portion of a pilot signal is extracted within the transmission path may be determined as a position relatively close to the speaker based on each transmission path. For example, the electronic device (101) may more accurately determine status information (e.g., temperature information) for the amplifier by extracting a pilot signal from a position relatively close to the speaker. For example, the adjacent position may include a point relatively close to the speaker based on a midpoint of the transmission path. For example, the adjacent position may include a point within a set distance based on a position of the speaker.

[0114] According to one embodiment, the electronic device (101) can check the current value and / or voltage value corresponding to the feedback signal, and when calculating the resistance value corresponding to the amplifier using the checked current value and / or voltage value, the electronic device can consider the resistance value according to the transmission path and the resistance value according to the speaker. For example, the resistance value according to the transmission path can be about 1 ohm, and the resistance value according to the speaker can be about 8 ohm. The electronic device (101) can calculate the resistance value corresponding to the amplifier based on the current value and / or voltage value corresponding to the feedback signal, and can predict the temperature of the amplifier. For example, the electronic device (101) can determine whether the predicted temperature of the amplifier exceeds a limit temperature set corresponding to the amplifier. The electronic device (101) can adjust the current value and / or voltage value supplied to the amplifier so that the predicted temperature of the amplifier does not exceed the limit temperature.

[0115] According to one embodiment, the electronic device (101) is not limited to the number of speakers (311, 312, 313, 314) and amplifiers (321, 322, 323, 324) illustrated in FIG. 5. The electronic device (101) is not limited to the transducer (301) illustrated in FIG. 5. The electronic device (101) may include at least two amplifiers, and may include a relatively smaller number of transducers than the at least two amplifiers. The electronic device (101) may receive a feedback signal corresponding to each of the plurality of amplifiers based on a relatively smaller number of transducers than the plurality of amplifiers. For example, the converter (301) can receive a feedback signal according to each amplifier (321, 322, 323, 324) based on a feedback path (511, 512, 513, 514) corresponding to each amplifier (321, 322, 323, 324).

[0116] According to one embodiment, the electronic device (101) can receive a plurality of feedback signals based on the converter (301) and recognize the plurality of feedback signals by selecting them by frequency. In one embodiment, the electronic device (101) can also recognize the plurality of feedback signals by selecting them by set time intervals.

[0117] According to one embodiment, the electronic device (101) can distinguish between multiple feedback signals received through a single converter (301) and check status information (e.g., performance information and / or temperature information) corresponding to each amplifier. The electronic device (101) can check a set limit temperature corresponding to each amplifier and adjust a current value and / or voltage value supplied to each amplifier so that each amplifier is maintained below the limit temperature. The electronic device (101) can individually control each amplifier.

[0118] FIG. 6 is a graph for distinguishing feedback signals by frequency based on a plurality of feedback signals according to one embodiment of the present disclosure. FIG. 7 is a graph for distinguishing feedback signals according to set time intervals based on a plurality of feedback signals according to one embodiment of the present disclosure.

[0119] According to one embodiment, the description of FIGS. 6 and 7 may be understood as being performed by a processor (e.g., processor (120) of FIG. 3) of an electronic device (e.g., electronic device (101) of FIG. 1, electronic device (201) of FIG. 2). The electronic device in FIGS. 6 and 7 may be at least partially similar to the electronic device (101) of FIG. 1 and the electronic device (201) of FIG. 2, or may further include other embodiments of the electronic device (101).

[0120] The graph (600) illustrated in FIG. 6 illustrates a situation in which a plurality of feedback signals are distinguished by set frequencies when receiving a plurality of feedback signals based on a converter (e.g., converter (301) of FIG. 3) included in an electronic device (101).

[0121] For example, a first feedback signal corresponding to a first amplifier (e.g., the first amplifier (321) of FIG. 3) may be generated based on a first frequency (f1) (611). The electronic device (101) may set the first frequency (f1) (611) in relation to the first amplifier (321) and store the first frequency (f1) (611) in frequency information (e.g., the frequency information (311) of FIG. 3) of a memory (e.g., the memory (130) of FIG. 3). In a situation where a plurality of feedback signals are received, the processor (120) may select the first feedback signal based on the first frequency (f1) (611).

[0122] For example, a second feedback signal corresponding to a second amplifier (e.g., the second amplifier (322) of FIG. 3) may be generated based on a second frequency (f2) (612). The electronic device (101) may set the second frequency (f2) (612) in relation to the second amplifier (322) and store the second frequency (f2) (612) in the frequency information (311) of the memory (130). In a situation where a plurality of feedback signals are received, the processor (120) may select the second feedback signal based on the second frequency (f2) (612).

[0123] For example, a third feedback signal corresponding to a third amplifier (e.g., the third amplifier (323) of FIG. 3) may be generated based on a third frequency (f3) (613). The electronic device (101) may set the third frequency (f3) (613) in relation to the third amplifier (323) and store the third frequency (f3) (613) in the frequency information (311) of the memory (130). In a situation where multiple feedback signals are received, the processor (120) may select the third feedback signal based on the third frequency (f3) (613).

[0124] For example, a fourth feedback signal corresponding to a fourth amplifier (e.g., the fourth amplifier (324) of FIG. 5) may be generated based on a fourth frequency (f4) (614). The electronic device (101) may set the fourth frequency (f4) (614) in relation to the fourth amplifier (324) and store the fourth frequency (f4) (614) in the frequency information (311) of the memory (130). In a situation where multiple feedback signals are received, the processor (120) may select the fourth feedback signal based on the fourth frequency (f4) (614).

[0125] According to one embodiment, each frequency set corresponding to each amplifier (e.g., first frequency (f1) (611), second frequency (f2) (612), third frequency (f3) (613), or fourth frequency (f4) (614)) may be set based on an “inaudible frequency band” (e.g., a frequency band of sound waves that cannot be heard by the human ear, approximately 0 Hz-60 Hz).

[0126] According to one embodiment, the electronic device (101) may select a feedback signal based on each frequency in a situation where multiple feedback signals are received based on a single converter (e.g., converter (301) of FIG. 3). For example, the processor (120) may select a first feedback signal based on a first frequency (f1) (611), a second feedback signal based on a second frequency (f2) (612), a third feedback signal based on a third frequency (f3) (613), and a fourth feedback signal based on a fourth frequency (f4) (614).

[0127] The graph (700) illustrated in FIG. 7 illustrates a situation in which multiple feedback signals are distinguished by set time intervals when receiving multiple feedback signals based on a converter (301) included in an electronic device (101).

[0128] According to one embodiment, referring to the first graph (701), the processor (120) can select a first feedback signal corresponding to a first frequency band (711) in a set first time interval. For example, the first feedback signal can be generated based on a first frequency (f1) (611) included in the first frequency band (711). The electronic device (101) can check the first feedback signal in the first time interval.

[0129] According to one embodiment, referring to the second graph (702), the processor (120) can select a second feedback signal corresponding to a second frequency band (712) in a set second time interval. For example, the second feedback signal can be generated based on a second frequency (f2) (612) included in the second frequency band (712). The electronic device (101) can check the second feedback signal in the second time interval.

[0130] According to one embodiment, referring to the third graph (703), the processor (120) can select a third feedback signal corresponding to a third frequency band (713) in a set third time interval. For example, the third feedback signal can be generated based on a third frequency (f3) (613) included in the third frequency band (713). The electronic device (101) can check the third feedback signal in the third time interval.

[0131] According to one embodiment, referring to the fourth graph (704), the processor (120) can select a fourth feedback signal corresponding to a fourth frequency band (714) in a set fourth time interval. For example, the fourth feedback signal can be generated based on a fourth frequency (f4) (614) included in the fourth frequency band (714). The electronic device (101) can check the fourth feedback signal in the fourth time interval.

[0132] According to one embodiment, the first time interval to the fourth time interval may be set as a continuous time. For example, the electronic device (101) may set the first time interval to the fourth time interval as one cycle, and may select the first feedback signal to the fourth feedback signal according to the set cycle. According to one embodiment, the electronic device (101) may select and recognize a plurality of feedback signals according to a situation in which one set cycle is repeated.

[0133] Referring to FIG. 7, a continuous time is set from the first time interval to the fourth time interval, but is not limited thereto. According to one embodiment, in a situation where multiple feedback signals are received, the electronic device (101) can individually recognize each feedback signal according to multiple time intervals.

[0134] FIG. 8 is an exemplary circuit diagram in which a plurality of amplifiers and converters are formed into a single chip according to one embodiment of the present disclosure.

[0135] The example circuit diagram (800) illustrated in FIG. 8 may be at least partially similar to the circuit diagrams included in the electronic device (101) of FIG. 1 and the electronic device (201) of FIG. 2, or may further include other embodiments of the electronic device (101).

[0136] According to one embodiment, the description of FIG. 8 may be understood as being performed by a processor (e.g., processor (120) of FIG. 3) of an electronic device (e.g., electronic device (101) of FIG. 1 and / or electronic device (201) of FIG. 2). The electronic device in FIG. 8 may be at least partially similar to the electronic device (101) of FIG. 1 and the electronic device (201) of FIG. 2, or may further include other embodiments of the electronic device (101).

[0137] Referring to FIG. 8, a plurality of amplifiers (e.g., the first amplifier (321), the second amplifier (322), or the third amplifier (323) of FIG. 3) and one converter (e.g., the converter (301) of FIG. 3) can be formed into one chip (811).

[0138] Referring to FIG. 8, the first amplifier (321) may be electrically connected to the first speaker (311) along a first transmission path (e.g., the first transmission path (341) of FIG. 3) and may be electrically connected to the converter (301) at a portion of the first transmission path (341). The electronic device (101) may generate a first feedback signal (e.g., a feedback signal having a first frequency (f1) (611)) corresponding to the first amplifier (321). The electronic device (101) may receive the first feedback signal using the converter (301) and select the first feedback signal having the first frequency (f1) (611) based on frequency information (311) stored in a memory (e.g., the memory (130) of FIG. 3). The electronic device (101) can check first status information (e.g., performance information and / or temperature information) for the first amplifier (321) based on the first feedback signal.

[0139] Referring to FIG. 8, the second amplifier (322) may be electrically connected to the second speaker (312) along a second transmission path (e.g., the second transmission path (342) of FIG. 3) and may be electrically connected to the converter (301) at a portion of the second transmission path (342). The electronic device (101) may generate a second feedback signal (e.g., a feedback signal having a second frequency (f2) (612)) corresponding to the second amplifier (322). The electronic device (101) may receive the second feedback signal using the converter (301) and, based on frequency information (311) stored in the memory (130), select the second feedback signal having the second frequency (f2) (612). The electronic device (101) may determine second status information for the second amplifier (322) based on the first feedback signal.

[0140] Referring to FIG. 8, the third amplifier (323) may be electrically connected to the third speaker (313) along a third transmission path (e.g., the third transmission path (343) of FIG. 3) and may be electrically connected to the converter (301) at a portion of the third transmission path (343). The electronic device (101) may generate a third feedback signal (e.g., a feedback signal having a third frequency (f3) (613)) corresponding to the third amplifier (323). The electronic device (101) may receive the third feedback signal using the converter (301) and, based on frequency information (311) stored in the memory (130), select the third feedback signal having the third frequency (f3) (613). The electronic device (101) may determine third state information about the third amplifier (323) based on the third feedback signal.

[0141] According to one embodiment, the electronic device (101) may select the plurality of feedback signals based on each frequency in a situation where a plurality of feedback signals are received based on a single converter (301). For example, the processor (120) may select a first feedback signal for the first amplifier (321) based on a first frequency (f1) (611), a second feedback signal for the second amplifier (322) based on a second frequency (f2) (612), and a third feedback signal for the third amplifier (323) based on a third frequency (f3) (613). The processor (120) can obtain first state information about the first amplifier (321) based on the first feedback signal, obtain second state information about the second amplifier (322) based on the second feedback signal, and obtain third state information about the third amplifier (323) based on the third feedback signal. The electronic device (101) can individually control each amplifier. For example, the electronic device (101) can at least partially adjust the current value and / or voltage value supplied to each amplifier.

[0142] According to one embodiment, the electronic device (101) can receive feedback signals corresponding to each of the plurality of amplifiers based on a relatively smaller number of converters than the plurality of amplifiers. The electronic device (101) can check status information for each of the amplifiers based on the received feedback signals. According to one embodiment, the electronic device (101) can reduce the number of converters arranged in the internal space, thereby securing the internal space of the electronic device (101). The cost for manufacturing the electronic device (101) can be reduced. The electronic device (101) can more efficiently manage the current consumption related to the amplifier. According to one embodiment, the electronic device (101) can at least partially control the output of an audio signal and provide an audio signal having optimal sound quality to a user.

[0143] In an electronic device (101) according to one embodiment, a method for controlling output of an audio signal comprises: an operation of transmitting an amplified first audio signal to a first speaker (311) using a first amplifier (321) electrically connected to the first speaker (311) based on a first transmission path (341); an operation of transmitting an amplified second audio signal to a second speaker (312) using a second amplifier (322) electrically connected to a second speaker (312) different from the first speaker (311) based on a second transmission path (342); an operation of obtaining a first feedback signal corresponding to the first audio signal extracted from a part of the first transmission path (341) and a second feedback signal corresponding to the second audio signal extracted from a part of the second transmission path (342) using a converter (301); and an operation of controlling output of a first frequency band set corresponding to the first amplifier (321). The method may include an operation of confirming first state information about the first amplifier (321) using the first feedback signal, an operation of confirming second state information about the second amplifier (322) using the second feedback signal of the second frequency band set corresponding to the second amplifier (322), an operation of at least partially controlling the first amplifier (321) based on the first state information, and an operation of at least partially controlling the second amplifier (322) based on the second state information.

[0144] According to one embodiment, the method may further include: transmitting an amplified third audio signal to a third speaker (313) different from the first speaker (311) and the second speaker (312) using a third amplifier (323) electrically connected to the third speaker (313) based on a third transmission path (343); obtaining a third feedback signal corresponding to the third audio signal from a part of the third transmission path (343) based on the converter (301); checking third state information for the third amplifier (323) using the third feedback signal of a third frequency band set corresponding to the third amplifier (323); and controlling the third amplifier (323) at least partially based on the checked third state information.

[0145] According to one embodiment, the method may further include: acquiring the first feedback signal corresponding to the first audio signal in a part of the first transmission path (341), the second feedback signal corresponding to the second audio signal in a part of the second transmission path (342), and the third feedback signal corresponding to the third audio signal in a part of the third transmission path (343) based on at least one of the first converter and the second converter included in the converter (301); confirming first state information about the first amplifier (321) based on the first feedback signal corresponding to the first frequency band; confirming second state information about the second amplifier (322) based on the second feedback signal corresponding to the second frequency band; and confirming third state information about the third amplifier (323) based on the third feedback signal corresponding to the third frequency band.

[0146] According to one embodiment, the first state information may include a first current value and a first voltage value identified based on the first feedback signal, the second state information may include a second current value and a second voltage value identified based on the second feedback signal, and the third state information may include a third current value and a third voltage value identified based on the third feedback signal.

[0147] A method according to one embodiment may further include an operation of calculating a first temperature corresponding to the first amplifier (321) based on the first current value and the first voltage value included in the first state information, and an operation of adjusting a current value and a voltage value applied to the first amplifier (321) so that the calculated first temperature is maintained below a first limit temperature set corresponding to the first amplifier.

[0148] According to one embodiment, the method may further include, in response to obtaining the first feedback signal, an operation of identifying a first time interval corresponding to the first amplifier (321) and a second time interval corresponding to the second amplifier (322), an operation of identifying first state information according to the first time interval corresponding to the first amplifier (321) based on the first feedback signal, and an operation of identifying second state information according to the second time interval corresponding to the second amplifier (322) based on the second feedback signal.

[0149] According to one embodiment, the method may further include: an operation of confirming the first state information included in the first feedback signal and the second state information included in the second feedback signal based on at least one band filter for detecting a signal corresponding to a specific frequency band; an operation of converting an analog signal corresponding to the first state information into a digital signal based on the converter (301); an operation of converting an analog signal corresponding to the second state information into a digital signal based on the converter (301); an operation of at least partially controlling the first amplifier (321) based on the first state information converted into the digital signal; and an operation of at least partially controlling the second amplifier (322) based on the second state information converted into the digital signal.

[0150] In one embodiment, the number of converters operatively connected to the first amplifier and the second amplifier may be less than the number of amplifiers.

[0151] According to one embodiment, a non-transitory computer-readable storage medium (or computer program product) storing one or more programs for performing a method of controlling output of an audio signal in an electronic device (101) may be described. According to one embodiment, one or more programs, when executed by the processor (120) of the electronic device (101), perform the following operations: transmitting an amplified first audio signal to a first speaker (311) using a first amplifier (321) electrically connected to the first speaker (311) based on a first transmission path (341); transmitting an amplified second audio signal to a second speaker (312) using a second amplifier (322) electrically connected to a second speaker (312) different from the first speaker (311) based on a second transmission path (342); obtaining a first feedback signal corresponding to the first audio signal extracted from a portion of the first transmission path (341) and a second feedback signal corresponding to the second audio signal extracted from a portion of the second transmission path (342) using a converter (301); The method may include instructions for performing an operation of confirming first state information about the first amplifier (321) using the first feedback signal of the first frequency band set corresponding to the amplifier (321), an operation of confirming second state information about the second amplifier (322) using the second feedback signal of the second frequency band set corresponding to the second amplifier (322), an operation of at least partially controlling the first amplifier (321) based on the first state information, and an operation of at least partially controlling the second amplifier (322) based on the second state information.

[0152] Electronic devices according to the various embodiments disclosed in this document may take various forms. Electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, or home appliances. Electronic devices according to the embodiments of this document are not limited to the aforementioned devices.

[0153] The various embodiments of this document and the terminology used therein are not intended to limit the technical features described in this document to specific embodiments, but should be understood to include various modifications, equivalents, or substitutes of the embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the items, unless the context clearly indicates otherwise. In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" can include any one of the items listed together in the corresponding phrase among those phrases, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used merely to distinguish one component from another, and do not limit the components in any other respect (e.g., importance or order). When a component (e.g., a first component) is referred to as "coupled" or "connected" to another (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0154] The term "module" used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit. A module may be an integral component, or a minimum unit or part of such a component that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0155] Various embodiments of the present document may be implemented as software (e.g., a program (140)) including one or more instructions stored in a storage medium (e.g., an internal memory (136) or an external memory (138)) readable by a machine (e.g., an electronic device (101)). For example, a processor (e.g., a processor (120)) of the machine (e.g., an electronic device (101)) may call at least one instruction among the one or more instructions stored from the storage medium and execute it. This enables the machine to operate to perform at least one function according to the at least one called instruction. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' simply means that the storage medium is a tangible device and does not contain signals (e.g., electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently or temporarily on the storage medium.

[0156] According to one embodiment, the method according to various embodiments disclosed in the present document may be provided as included in a computer program product. The computer program product may be traded as a product between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., compact disc read-only memory (CD-ROM)), or may be distributed online (e.g., downloaded or uploaded) via an application store (e.g., Play Store™) or directly between two user devices (e.g., smart phones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily generated in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.

[0157] According to various embodiments, each component (e.g., a module or a program) of the above-described components may include one or more entities, and some of the entities may be separated and placed in other components. According to various embodiments, one or more components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (e.g., a module or a program) may be integrated into a single component. In such a case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. According to various embodiments, the operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

Claims

1. In an electronic device (101), A first amplifier (321) electrically connected to a first speaker (311) based on a first transmission path (341); A second amplifier (322) electrically connected to a second speaker (312) different from the first speaker (311) based on a second transmission path (342); converter (301); a processor (120) operatively connected to the first amplifier (321), the second amplifier (322) and the converter (301); and A memory (130) for storing instructions; When the above instructions are executed by the processor (120), the electronic device (101) causes: The first audio signal amplified by the first amplifier (321) is transmitted to the first speaker (311), Transmitting the second audio signal amplified by the second amplifier (322) to the second speaker (312), Obtaining a first feedback signal corresponding to the first audio signal extracted from a part of the first transmission path (341) and a second feedback signal corresponding to the second audio signal extracted from a part of the second transmission path (342) using the converter (301), Using the first feedback signal of the first frequency band set corresponding to the first amplifier (321), the first state information for the first amplifier (321) is confirmed, Using the second feedback signal of the second frequency band set corresponding to the second amplifier (322), the second state information for the second amplifier (322) is confirmed, At least partially controlling the first amplifier (321) based on the first state information, An electronic device for at least partially controlling the second amplifier (322) based on the second state information.

2. In paragraph 1, Further comprising a third amplifier (323) electrically connected to a third speaker (313) different from the first speaker (311) and the second speaker (312) based on a third transmission path (343); When the above instructions are executed by the processor (120), the electronic device (101) causes: The third audio signal amplified by the third amplifier (323) is transmitted to the third speaker (313), Based on the above converter (301), a third feedback signal corresponding to the third audio signal is obtained from a part of the third transmission path (343), Using the third feedback signal of the third frequency band set corresponding to the third amplifier (323), the third state information for the third amplifier (323) is confirmed, An electronic device for at least partially controlling the third amplifier (323) based on the third state information confirmed above.

3. In paragraph 2, The above converter (301) further includes a first converter and a second converter; When the above instructions are executed by the processor (120), the electronic device (101) causes: Based on at least one of the first converter and the second converter, the first feedback signal corresponding to the first audio signal is obtained in a part of the first transmission path (341), the second feedback signal corresponding to the second audio signal is obtained in a part of the second transmission path (342), and the third feedback signal corresponding to the third audio signal is obtained in a part of the third transmission path (343). Based on the first feedback signal corresponding to the first frequency band, the first state information for the first amplifier (321) is confirmed, Based on the second feedback signal corresponding to the second frequency band, the second state information for the second amplifier (322) is confirmed, Based on the third feedback signal corresponding to the third frequency band, the third state information for the third amplifier (323) is confirmed, An electronic device, characterized in that the first frequency band, the second frequency band, and the third frequency band are determined based on an inaudible frequency band.

4. In paragraph 3, The first state information includes a first current value and a first voltage value confirmed based on the first feedback signal, The second state information includes a second current value and a second voltage value confirmed based on the second feedback signal, An electronic device wherein the third state information includes a third current value and a third voltage value that are confirmed based on the third feedback signal.

5. In paragraph 4, When the above instructions are executed by the processor (120), the electronic device (101) causes: Based on the first current value and the first voltage value included in the first state information, a first temperature corresponding to the first amplifier (321) is calculated, An electronic device that adjusts the current value and voltage value applied to the first amplifier (321) so that the first temperature calculated above is maintained below the first limit temperature set corresponding to the first amplifier.

6. In paragraph 1, When the above instructions are executed by the processor (120), the electronic device (101) causes: In response to acquisition of the first feedback signal, a first time interval corresponding to the first amplifier (321) and a second time interval corresponding to the second amplifier (322) are identified, Based on the first feedback signal, the first state information according to the first time interval corresponding to the first amplifier (321) is confirmed, An electronic device that checks the second state information according to the second time interval corresponding to the second amplifier (322) based on the second feedback signal.

7. In paragraph 1, At least one band filter for detecting a signal corresponding to a specific frequency band; further comprising; When the above instructions are executed by the processor (120), the electronic device (101) causes: Based on the at least one band filter, the first state information included in the first feedback signal and the second state information included in the second feedback signal are confirmed, Based on the above converter (301), an analog signal corresponding to the first state information is converted into a digital signal, Based on the above converter (301), an analog signal corresponding to the second state information is converted into a digital signal, At least partially controlling the first amplifier (321) based on the first state information converted into the digital signal, An electronic device that controls the second amplifier (322) at least partially based on the second state information converted into the digital signal.

8. In paragraph 7, When the above instructions are executed by the processor (120), the electronic device (101) causes: Based on the above converter (301), the first feedback signal is converted from an analog signal to a digital signal, Based on the first feedback signal converted into the digital signal, the first state information corresponding to the first frequency band set corresponding to the first amplifier (321) is confirmed, Based on the above converter (301), the second feedback signal is converted from an analog signal to a digital signal, Based on the second feedback signal converted into the digital signal, the second state information corresponding to the second frequency band set corresponding to the second amplifier (322) is confirmed, At least partially controlling the first amplifier (321) based on the first state information, An electronic device for at least partially controlling the second amplifier (322) based on the second state information.

9. In paragraph 1, An electronic device characterized in that the first amplifier (321), the second amplifier (322) and the converter (301) are included in one chipset.

10. In paragraph 1, An electronic device characterized in that the number of converters operatively connected to the amplifier included in the electronic device (101) is less than the number of the amplifiers.

11. In a method for controlling the output of an audio signal, An operation of transmitting an amplified first audio signal to a first speaker (311) using a first amplifier (321) electrically connected to the first speaker (311) based on a first transmission path (341); An operation of transmitting an amplified second audio signal to a second speaker (312) using a second amplifier (322) electrically connected to a second speaker (312) based on a second transmission path (342), which is different from the first speaker (311); An operation of obtaining a first feedback signal corresponding to the first audio signal extracted from a portion of the first transmission path (341) and a second feedback signal corresponding to the second audio signal extracted from a portion of the second transmission path (342) using a converter (301); An operation of confirming first status information for the first amplifier (321) by using the first feedback signal of the first frequency band set corresponding to the first amplifier (321); An operation of confirming second status information for the second amplifier (322) by using the second feedback signal of the second frequency band set corresponding to the second amplifier (322); An operation of at least partially controlling the first amplifier (321) based on the first state information; and A method comprising: an operation of at least partially controlling the second amplifier (322) based on the second state information; 12. In paragraph 11, An operation of transmitting an amplified third audio signal to a third speaker (313) using a third amplifier (323) electrically connected to the third speaker (313) based on a third transmission path (343) different from the first speaker (311) and the second speaker (312); An operation of obtaining a third feedback signal corresponding to the third audio signal from a part of the third transmission path (343) based on the above converter (301); An operation of confirming third state information about the third amplifier (323) by using the third feedback signal of the third frequency band set corresponding to the third amplifier (323); and A method further comprising: an operation of at least partially controlling the third amplifier (323) based on the third state information confirmed above; 13. In paragraph 12, An operation of obtaining the first feedback signal corresponding to the first audio signal in a part of the first transmission path (341), the second feedback signal corresponding to the second audio signal in a part of the second transmission path (342), and the third feedback signal corresponding to the third audio signal in a part of the third transmission path (343) based on at least one of the first converter and the second converter included in the converter (301); An operation of confirming first state information for the first amplifier (321) based on the first feedback signal corresponding to the first frequency band; An operation of confirming second state information for the second amplifier (322) based on the second feedback signal corresponding to the second frequency band; and A method further comprising: an operation of confirming third state information for the third amplifier (323) based on the third feedback signal corresponding to the third frequency band; 14. In paragraph 12, A method characterized in that the number of converters operatively connected to the first amplifier and the second amplifier is less than the number of amplifiers.

15. In a non-transitory computer-readable storage medium storing one or more programs for performing a method of controlling output of an audio signal in an electronic device (101), When the above one or more programs are executed by the processor (120) of the electronic device (101), An operation of transmitting an amplified first audio signal to a first speaker (311) using a first amplifier (321) electrically connected to the first speaker (311) based on a first transmission path (341); An operation of transmitting an amplified second audio signal to a second speaker (312) using a second amplifier (322) electrically connected to a second speaker (312) based on a second transmission path (342), which is different from the first speaker (311); An operation of obtaining a first feedback signal corresponding to the first audio signal extracted from a portion of the first transmission path (341) and a second feedback signal corresponding to the second audio signal extracted from a portion of the second transmission path (342) using a converter (301); An operation of confirming first status information for the first amplifier (321) by using the first feedback signal of the first frequency band set corresponding to the first amplifier (321); An operation of confirming second status information for the second amplifier (322) by using the second feedback signal of the second frequency band set corresponding to the second amplifier (322); An operation of at least partially controlling the first amplifier (321) based on the first state information; and A computer-readable storage medium comprising instructions for performing an operation of at least partially controlling the second amplifier (322) based on the second state information.

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