Volume control method and device for multiple devices playing audio in group

Abstract

Embodiments disclosed herein relate to a volume control method and device for devices that play audio in a group. To this end, an electronic device can: record first test audio signals that are respectively output through a speaker of the electronic device and a speaker of an audio device; calculate a reference output ratio on the basis of the recorded first test audio signals; record second test audio signals that are respectively output through the speaker of the electronic device and the speaker of the audio device when the volume of at least one among the electronic device and the audio device changes; calculate a changed output ratio on the basis of the recorded second test audio signals; and calculate an audio correction gain to be applied to the audio device on the basis of the reference output ratio and the changed output ratio.

Description

Method and device for volume control of multiple devices playing audio as a group

[0001] The present disclosure relates to a method and apparatus for controlling the volume of multiple devices that play audio as a group.

[0002] An electronic device, such as a display device, can be connected to at least one audio device, such as a speaker and a soundbar, to play audio as a group. When different devices play audio as a group, it is necessary to set a volume balance so that the sound levels between the devices are harmonious. Additionally, a harmonious volume balance needs to be maintained even when the volume is changed in at least one of the electronic device and the at least one audio device.

[0003] However, when audio devices connected to an electronic device are from different manufacturers or when communication environments or available information are limited, it may be possible to control the volume, such as volume up / down, or obtain information such as the volume level (e.g., a percentage of the maximum volume), but it may be difficult for different devices to play audio harmoniously as a group.

[0004] The present disclosure provides a method and apparatus for volume control of multiple devices that play audio as a group. Specifically, various embodiments of the present disclosure relate to a method and system for volume control of multiple devices that play audio as a group, wherein a reference output ratio for a test audio signal output through the speakers of each of the two devices is determined based on a reference volume balance set by a user on an electronic device (or main device) and an audio device (or sub device) connected to the electronic device, and wherein, when the volume is changed, an audio correction gain to be applied to the audio device is calculated based on the reference output ratio and the changed output ratio, thereby maintaining the reference volume balance.

[0005] According to one embodiment of the present disclosure, in order to solve the technical problem described above, an electronic device may include: a communication interface communicating with an audio device; a speaker outputting an audio signal; a memory storing at least one instruction; and at least one processor electrically connected to the communication interface, the speaker, and the memory, and executing the at least one instruction. The at least one processor may each record a first test audio signal output through the speaker and the speaker of the audio device, respectively, based on a volume set by user input in the electronic device and the audio device, respectively. The at least one processor may calculate a reference output ratio based on the first test audio signals each recorded. The at least one processor may each record a second test audio signal output through the speaker and the speaker of the audio device, respectively, when the volume of at least one of the electronic device and the audio device is changed. The at least one processor may calculate a change output ratio based on the second test audio signals each recorded. The at least one processor may calculate an audio correction gain to be applied to the audio device based on the reference output ratio and the change output ratio.

[0006] Additionally, according to one embodiment of the present disclosure, a method of operating an electronic device may include: an operation of recording a first test audio signal, each output through a speaker of the electronic device and a speaker of the audio device, respectively, based on a volume set by user input, respectively by the electronic device and an audio device connected to the electronic device; an operation of calculating a reference output ratio based on each of the first test audio signals recorded; an operation of recording a second test audio signal, each output through a speaker of the electronic device and a speaker of the audio device, respectively, when the volume of at least one of the electronic device and the audio device is changed; an operation of calculating a changed output ratio based on each of the second test audio signals recorded; and an operation of calculating an audio correction gain to be applied to the audio device based on the reference output ratio and the changed output ratio.

[0007] Additionally, according to one embodiment of the present disclosure, a computer-readable recording medium may be included on which a program for performing the method is recorded.

[0008] According to various embodiments of the present disclosure, by sharing minimal information such as a test audio signal, the effect of adjusting the audio volume of multiple devices to a reference volume balance set by the user can be provided. Therefore, even in situations where the manufacturers of multiple devices are different or they cannot communicate smoothly with each other, multiple devices can play audio as a group at a reference volume balance set by the user as harmonious, thereby contributing to the expansion of sub-devices capable of group playback and enhancing the product value of the main electronic device in terms of device interoperability.

[0009] The effects obtainable from the exemplary embodiments of the present disclosure are not limited to those mentioned above, and other unmentioned effects can be clearly derived and understood by those skilled in the art to which the exemplary embodiments of the present disclosure belong from the description below. That is, unintended effects resulting from the implementation of the exemplary embodiments of the present disclosure can also be derived by those skilled in the art from the exemplary embodiments of the present disclosure.

[0010] FIG. 1 is a schematic flowchart of a method for determining a reference output ratio for a test audio signal based on a set reference volume according to one embodiment of the present disclosure.

[0011] FIG. 2 is a schematic flowchart of a method for calculating an audio correction gain to be applied to an audio device based on a reference output ratio and a changed output ratio when the volume is changed, according to one embodiment of the present disclosure.

[0012] FIG. 3 is a block diagram of an electronic device according to one embodiment of the present disclosure.

[0013] FIG. 4 is a schematic flowchart of a method of operation of an electronic device according to one embodiment of the present disclosure.

[0014] Hereinafter, embodiments of the present disclosure are described in detail with reference to the drawings so that those skilled in the art can easily practice them. However, the present disclosure may be embodied in various different forms and is not limited to the embodiments described herein. In relation to 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 brevity.

[0015] FIG. 1 is a schematic flowchart of a method for determining a reference output ratio for a test audio signal based on a set reference volume according to one embodiment of the present disclosure.

[0016] Referring to FIG. 1, an electronic device (100) may be connected to at least one audio device (110) to play audio in a group. The method of playing audio in a group may include playing audio simultaneously in a group or playing audio in a group by the electronic device (100) and at least one audio device (110) sharing the responsibility. For example, the electronic device (100) may be connected to one audio device (110) positioned on the side. As another example, the electronic device (100) may be connected to a first audio device and a second audio device positioned on the left and right sides, respectively, in front of the electronic device (100). The electronic device (100) may include a display device (e.g., TV) and a video playback device (e.g., DVD player), but is not limited thereto. The audio device (110) may include a speaker and a soundbar, but is not limited thereto. The electronic device (100) may be connected to at least one audio device (110) via various communication methods including Bluetooth, WiFi, and UWB, but it will be understood by those skilled in the art that there may be various communication methods.

[0017] According to one embodiment, when the manufacturers of the electronic device (100) and the audio device (110) are different, the electronic device (100) can control the volume of the audio device (110) by transmitting a volume up or volume down command to the audio device (110) through the user interface of the electronic device (100), but may not know the current volume of the speaker of the audio device (110). As such, when the electronic device (100) and the audio device (110) play audio as a group, there are cases where the two devices do not know each other's volumes, or even if they are at the same volume, they cannot know each other's sound levels; therefore, it is necessary to set a volume balance so that the sound levels between the devices can be harmonized. Furthermore, even if the volume of at least one of the electronic device (100) and the audio device (110) is changed, it is necessary to play audio as a group while maintaining a harmonized volume balance.

[0018] Referring to FIG. 1, based on a reference volume balance set by a user for an electronic device (100) (or main device) and an audio device (110) (or sub device) connected to the electronic device (100), the electronic device (100) can calculate a reference output ratio for a test audio signal output through the speakers of each of the two devices. Specific operations of the electronic device (100) and the audio device (110) for calculating the reference output ratio will be described below with reference to operations 121 to 126.

[0019] According to one embodiment, in operation 121, the electronic device (100) can set the volume of at least one of the electronic device (100) and the audio device (110) based on user input. For example, if the user presses the '+' button of the remote control of the electronic device (100), the volume of the electronic device (100) can be increased by one step, or the volume of both the electronic device (100) and the audio device (110) that is connected to the electronic device (100) can be increased by one step. Additionally, according to one embodiment, if the user presses the '+' button of the remote control of the audio device (110), the volume of the audio device (110) can be increased by one step. In this case, the electronic device (100) can receive information from the audio device (110) indicating that the volume of the audio device (110) has been changed. The user can set the volumes of the electronic device (100) and the audio device (110) respectively, as in operation 121, so that the sound levels between the electronic device (100) and the audio device (110) can be harmonized when playing audio in a group. For example, the user can set the volumes of the electronic device (100) and the audio device (110) respectively so that the sound levels of the electronic device (100) and the audio device (110) are similar when playing audio in a group. The similar sound levels may correspond to similar sound pressure levels. The sound pressure level represents the intensity of sound as sound pressure and may mean a value expressed in decibels (dB) as a ratio to a reference sound pressure. By setting the volumes of the electronic device (100) and the audio device (110) as described above, a reference volume balance can be set so that the sound levels of the electronic device (100) and the audio device (110) can be harmonized when playing audio in a group.

[0020] According to one embodiment, in operation 122, the electronic device (100) may play a first test audio signal. The first test audio signal may be an inaudible high-frequency signal of a predetermined frequency band. For example, the first test audio signal may be an audio signal corresponding to a frequency band of 18 kHz or higher to 24 kHz or lower, but is not limited thereto. The first test audio signal may be acquired by the electronic device (100) in various ways not limited thereto and may be stored in a storage medium.

[0021] According to one embodiment, in operation 123, the electronic device (100) can transmit the first test audio signal to the audio device (110) so that the first test audio signal is output through the speaker of the audio device (110).

[0022] According to one embodiment, in operation 124, the audio device (110) can play the first test audio signal.

[0023] According to one embodiment, in operation 125, the electronic device (100) can record the first test audio signal output through the speaker of the electronic device (100) and the speaker of the audio device (110), respectively.

[0024] According to one embodiment, in operation 126, the electronic device (100) can calculate a reference output ratio based on each of the first recorded audio signals. According to one embodiment, the reference output ratio may be, but is not limited to, the ratio of the waveform energy of the first test audio signal recorded by the speaker output of the audio device (110) to the waveform energy of the first test audio signal recorded by the speaker output of the electronic device (100).

[0025] FIG. 2 is a schematic flowchart of a method for calculating an audio correction gain to be applied to an audio device based on a reference output ratio and a changed output ratio when the volume is changed, according to one embodiment of the present disclosure.

[0026] When the volume of at least one of the electronic device (100) and the audio device (110) is changed by user input, the change in sound level in each device may differ, so a situation may occur where the reference volume balance set by the user in FIG. 1 is not maintained. For example, even if the volume of both the electronic device (100) and the audio device (110) increases by one step by the user inputting the '+' button of the remote control of the electronic device (100), the change in sound level corresponding to the volume level 1 in each device may differ, so the reference volume balance set by the user in FIG. 1 may not be maintained. As another example, in a situation where the volume level of the electronic device (100) is 100 steps in total and the volume level of the audio device (110) is 50 steps in total, if the user continuously inputs the '+' button of the remote control of the electronic device (100), the volume of the audio device (110) cannot increase beyond 50 steps, so the reference volume balance set by the user in FIG. 1 may not be maintained.

[0027] As described above, when the volume of at least one of the electronic device (100) and the audio device (110) is changed, the electronic device (100) can record test audio signals output through the speaker of the electronic device (100) and the speaker of the audio device (110), respectively, and calculate the changed output ratio based thereon. The electronic device (100) can maintain the reference volume balance by calculating an audio correction gain to be applied to the audio device (110) based on the reference output ratio calculated through operation 126 of FIG. 1 and the changed output ratio. The audio correction gain may represent the degree to which the input audio voltage signal is amplified. The audio correction gain may be expressed as a value obtained by comparing the audio output level with the input level or the reference level, and can typically be expressed in decibels (dB). The specific operation of the electronic device (100) and the audio device (110) will be explained below with reference to operations 221 to 228.

[0028] According to one embodiment, in operation 221, the electronic device (100) can determine that the volume of at least one of the electronic device (100) and the audio device (110) has been changed. For example, when a user presses the '+' button of the remote control of the electronic device (100), the electronic device (100) can determine that the volume of at least one of the electronic device (100) and the audio device (110) has been changed. Alternatively, when a user presses the '+' button of the remote control of the audio device (110), the volume of the audio device (110) may be increased by one step, and the electronic device (100) can determine that the volume of the audio device (110) has been changed by receiving information from the audio device (110) indicating that the volume of the audio device (110) has been changed.

[0029] According to one embodiment, in operation 222, the electronic device (100) may play a second test audio signal. The second test audio signal may be an inaudible high-frequency signal of a predetermined frequency band. The second test audio signal may be the same signal or a different signal as the first test audio signal described above with reference to FIG. 1. For example, the second test audio signal may be an audio signal corresponding to a frequency band of 18 kHz or higher to 24 kHz or lower.

[0030] According to one embodiment, in operation 223, the electronic device (100) can transmit the second test audio signal to the audio device (110) so that the second test audio signal is output through the speaker of the audio device (110).

[0031] According to one embodiment, in operation 224, the audio device (110) can play a second test audio signal.

[0032] According to one embodiment, in operation 225, the electronic device (100) can record the second test audio signal, which is output through the speaker of the electronic device (100) and the speaker of the audio device (110), respectively.

[0033] According to one embodiment, in operation 226, the electronic device (100) may calculate a modified output ratio based on each of the second recorded audio signals. For example, the modified output ratio may be, but is not limited to, the ratio of the waveform energy of the second test audio signal recorded at the speaker output of the audio device (110) to the waveform energy of the second test audio signal recorded at the speaker output of the electronic device (100).

[0034] According to one embodiment, in operation 227, the electronic device (100) can calculate an audio correction gain to be applied to the audio device (110) based on the reference output ratio and the changed output ratio. The electronic device (100) can calculate an audio correction gain to be applied to the audio device (110) such that the changed output ratio becomes the reference output ratio.

[0035] According to one embodiment, in operation 228, the electronic device (100) can transmit an audio signal to which the audio correction gain has been applied to the audio device (110).

[0036] According to one embodiment, when an electronic device (100) is connected to a plurality of audio devices (110) via communication to play audio in a group, operations 121 to 126 of FIG. 1 and operations 221 to 228 of FIG. 2 may be repeated in correspondence with each audio device. However, in this case, the first test audio signal playback operation (operation 122) and the second test audio signal playback operation (operation 222) by the electronic device (100) may be performed only once, regardless of the number of audio devices (110).

[0037] FIG. 3 is a block diagram of an electronic device according to one embodiment of the present disclosure.

[0038] Referring to FIG. 3, the electronic device (300) may include a processor (310), memory (320), a communication interface (330), a speaker (340), and a user interface (350). The electronic device (300) may include additional components in addition to the illustrated components, or at least one of the illustrated components may be omitted.

[0039] According to one embodiment, the processor (310) can perform overall control operations of the electronic device (300). The processor (310) may be implemented as a digital signal processor (DSP), microprocessor, or time controller (TCON) that processes digital signals. However, it is not limited thereto, and may include or be defined by one or more of a central processing unit (CPU), microcontroller unit (MCU), micro processing unit (MPU), controller, application processor (AP), graphics processing unit (GPU), communication processor (CP), or ARM processor. Additionally, the processor (310) may be implemented as a system on chip (SoC) or large scale integration (LSI) with built-in processing algorithms, or may be implemented in the form of a field programmable gate array (FPGA). Furthermore, the processor (310) can perform various functions by executing computer executable instructions stored in memory (320). The processor (310) is connected to memory (320), a communication interface (330), a speaker (340), and a user It can be electrically connected to the interface (350).

[0040] According to one embodiment, the memory (320) may be implemented as internal memory such as ROM (e.g., EEPROM (electrically erasable programmable read-only memory)) or RAM included in the processor (310), or as memory separate from the processor (310). In this case, the memory (320) may be implemented in the form of memory embedded in the electronic device (300) or in the form of memory that can be attached to the electronic device (300) depending on the purpose of data storage. For example, data for operating the electronic device (300) may be stored in memory embedded in the electronic device (300), and data for the expansion function of the electronic device (300) may be stored in memory that can be attached to the electronic device (300).

[0041] In the case of memory embedded in the electronic device (300), it may be implemented as at least one of volatile memory (e.g., DRAM (dynamic RAM), SRAM (static RAM), or SDRAM (synchronous dynamic RAM), non-volatile memory (e.g., OTPROM (one time programmable ROM), PROM (programmable ROM), EPROM (erasable and programmable ROM), EEPROM (electrically erasable and programmable ROM), mask ROM, flash ROM, flash memory (e.g., NAND flash or NOR flash), hard drive, or solid state drive (SSD). In the case of memory that is detachable from the electronic device (300), it may be implemented in the form of a memory card (e.g., CF (compact flash), SD (secure digital), Micro-SD (micro secure digital), Mini-SD (mini secure digital), xD (extreme digital), MMC (multi-media card), etc.), external memory that can be connected to a USB port (e.g., USB memory).

[0042] The communication interface (330) may include various wired and wireless interfaces capable of inputting and outputting video, video information, and audio to or from an external device under the control of the processor (310). The communication interface (330) may include at least one of a wired communication interface, a wireless interface, and a short-range communication interface. It will be understood by those skilled in the art that the communication interface (330) may be added, deleted, and / or changed depending on the performance and structure of the electronic device (300). The wired communication interface may include at least one interface among HDMI (High Definition Multimedia Interface), MHL (Mobile High-Definition Link), USB (Universal Serial Bus), DP (Display Port), Thunderbolt, VGA (Video Graphics Array) port, RGB port, D-SUB (D-subminiature), and DVI (Digital Visual Interface). The wireless interface may include WiFi, but is not limited thereto. The above wireless interface may support the IEEE wireless LAN standard (IEEE 802.11x). The above wireless interface may be wirelessly connected to an Access Point (AP) under the control of the processor (310). The above short-range communication interface may wirelessly communicate with an external device over a short range under the control of the processor (310). Short-range communication may include, but is not limited to, Bluetooth, Bluetooth Low Energy, Infrared Data Association (IrDA), Ultra Wide Band (UWB), WiFi Direct, and Near Field Communication (NFC).The above external device may include a video providing device that provides video, etc. to the electronic device (300), an audio providing device that provides audio to the electronic device (300), and a speaker and soundbar that provide audio to the electronic device (300).

[0043] According to one embodiment, the speaker (340) includes a vibrator and can output sound. The speaker (340) can stimulate the vibrator to convert an audio signal into vibrational energy and can output sound.

[0044] According to one embodiment, the user interface (350) may include at least one device among a button, a touchpad, a remote control, a mouse, a keyboard, and a touch screen. Here, the button may be a various type of button, such as a mechanical button, a touchpad, a wheel, etc., formed in any area such as the front, side, or back of the main body exterior of the electronic device (300).

[0045] According to one embodiment, the processor (310) can change the volume of at least one of the electronic device (300) and the audio device connected to the electronic device (300) based on user input through the user interface (350). For example, if the user presses the '+' button on the remote control of the electronic device (300), the volume of the electronic device (300) can be increased by one step, or the volumes of both the electronic device (300) and the audio device can be increased by one step. Additionally, according to one embodiment, if the user presses the '+' button on the remote control of the audio device, the volume of the audio device can be increased by one step. In this case, the processor (310) can control the communication interface (330) to receive information from the audio device indicating that the volume of the audio device has been changed.

[0046] According to one embodiment, the processor (310) can play a first test audio signal so that it is output through a speaker (340). The first test audio signal may be an inaudible high-frequency signal of a predetermined frequency band. For example, the first test audio signal may be an audio signal corresponding to a frequency band of 18 kHz or higher to 24 kHz or lower. The first test audio signal may be acquired by the electronic device (300) in various ways not limited to and stored in a storage medium including a memory (320).

[0047] According to one embodiment, the processor (310) can control the communication interface (330) to transmit the first test audio signal to the audio device so that the first test audio signal is output through the speaker of the audio device. The audio device can play the first test audio signal so that it is output through the speaker of the audio device.

[0048] According to one embodiment, the processor (310) can record a first test audio signal output through the speaker (340) and the speaker of the audio device, respectively.

[0049] According to one embodiment, the processor (310) may calculate a reference output ratio based on each of the first recorded audio signals. For example, the reference output ratio may be, but is not limited to, the ratio of the waveform energy of the first test audio signal recorded at the speaker output of the audio device to the waveform energy of the first test audio signal recorded at the speaker (340) output of the electronic device (300).

[0050] According to one embodiment, the processor (310) can determine that the volume of at least one of the electronic device (300) and the audio device has been changed. For example, when a user inputs the '+' button of the remote control of the electronic device (300), the electronic device (300) can determine that the volume of at least one of the electronic device (300) and the audio device has been changed. Alternatively, when a user inputs the '+' button of the remote control of the audio device, the volume of the audio device may be increased by one step, and the processor (310) can control the communication interface (330) to receive information from the audio device indicating that the volume of the audio device has been changed. Based on the information indicating that the volume of the audio device has been changed, the processor (310) can determine that the volume of the audio device has been changed.

[0051] According to one embodiment, the processor (310) can play a second test audio signal so that it is output through a speaker (340). The second test audio signal may be an inaudible high-frequency signal of a predetermined frequency band. The second test audio signal may be the same signal as or different from the first test audio signal. For example, the second test audio signal may be an audio signal corresponding to a frequency band of 18 kHz or higher to 24 kHz or lower.

[0052] According to one embodiment, the processor (310) can control the communication interface (330) to transmit the second test audio signal to the audio device so that the second test audio signal is output through the speaker of the audio device. The audio device can play the second test audio signal so that it is output through the speaker of the audio device.

[0053] According to one embodiment, the processor (310) can record a second test audio signal output through the speaker (340) and the speaker of the audio device, respectively.

[0054] According to one embodiment, the processor (310) may calculate a change output ratio based on each of the second recorded audio signals. According to one embodiment, the change output ratio may be, but is not limited to, the ratio of the waveform energy of the second test audio signal recording the speaker output of the audio device to the waveform energy of the second test audio signal recording the output of the speaker (340) of the electronic device (300).

[0055] According to one embodiment, the processor (310) can calculate an audio correction gain to be applied to the audio device based on the reference output ratio and the changed output ratio. The processor (310) can calculate an audio correction gain to be applied to the audio device such that the changed output ratio becomes the reference output ratio.

[0056] According to one embodiment, the processor (310) can control the communication interface (330) to transmit an audio signal to the audio device to which the audio correction gain has been applied.

[0057] FIG. 4 is a schematic flowchart of a method of operation of an electronic device according to one embodiment of the present disclosure. The electronic device of FIG. 4 may be an electronic device corresponding to the electronic device (100) of FIG. 1 and FIG. 2 and the electronic device (300) of FIG. 3. In the operation of the electronic device described in FIG. 4, parts that overlap with parts described in FIG. 1 to FIG. 3 may be omitted. Some of the operations shown in FIG. 4 may be omitted, and operations not shown in FIG. 4 may be added.

[0058] In operation 410 according to one embodiment, the electronic device (300) can record a first test audio signal, which is output through the speaker (340) of the electronic device (300) and the speaker of the audio device, respectively, based on a volume set by user input, respectively, in the electronic device (300) and the audio device connected to the electronic device (300). The first test audio signal may be an inaudible high-frequency signal of a predetermined frequency band. For example, the first test audio signal may be an audio signal corresponding to a frequency band of 18 kHz or higher to 24 kHz or lower. The electronic device (300) can transmit the first test audio signal to the audio device so that the first test audio signal is output through the speaker of the audio device.

[0059] In operation 420 according to one embodiment, the electronic device (300) can calculate a reference output ratio based on each of the first recorded audio signals. For example, the reference output ratio may be, but is not limited to, the ratio of the waveform energy of the first test audio signal recorded at the speaker output of the audio device to the waveform energy of the first test audio signal recorded at the speaker output of the electronic device (300).

[0060] According to one embodiment, the electronic device (300) can determine that the volume of at least one of the electronic device (300) and the audio device has been changed.

[0061] In operation 430 according to one embodiment, when the volume is changed, the electronic device (300) may record a second test audio signal, which is output through the speaker (340) of the electronic device (300) and the speaker of the audio device, respectively. The second test audio signal may be an inaudible high-frequency signal of a predetermined frequency band. The second test audio signal may be the same or different from the first test audio signal. For example, the second test audio signal may be an audio signal corresponding to a frequency band of 18 kHz or higher to 24 kHz or lower. The electronic device (300) may transmit the second test audio signal to the audio device so that the second test audio signal is output through the speaker of the audio device.

[0062] In operation 440 according to one embodiment, the electronic device (300) may calculate a change output ratio based on each of the second recorded audio signals. For example, the change output ratio may be, but is not limited to, the ratio of the waveform energy of the second test audio signal recorded at the speaker output of the audio device to the waveform energy of the second test audio signal recorded at the speaker output of the electronic device (300).

[0063] In operation 450 according to one embodiment, the electronic device (300) can calculate an audio correction gain to be applied to the audio device based on the reference output ratio and the changed output ratio. The electronic device (300) can calculate an audio correction gain to be applied to the audio device such that the changed output ratio becomes the reference output ratio.

[0064] According to one embodiment, the electronic device (300) can transmit an audio signal to the audio device to which the audio correction gain has been applied.

[0065] According to one embodiment of the present disclosure, an electronic device may include: a communication interface communicating with an audio device; a speaker outputting an audio signal; a memory storing at least one instruction; and at least one processor electrically connected to the communication interface, the speaker, and the memory, and executing the at least one instruction. The at least one processor may each record a first test audio signal output through the speaker and the speaker of the audio device, respectively, based on a volume set by user input in the electronic device and the audio device, respectively. The at least one processor may calculate a reference output ratio based on the first test audio signals each recorded. The at least one processor may each record a second test audio signal output through the speaker and the speaker of the audio device, respectively, when the volume of at least one of the electronic device and the audio device is changed. The at least one processor may calculate a change output ratio based on the second test audio signals each recorded. The at least one processor may calculate an audio correction gain to be applied to the audio device based on the reference output ratio and the change output ratio.

[0066] According to one embodiment, the at least one processor can control the communication interface to transmit the first test audio signal to the audio device so that the first test audio signal is output through the speaker of the audio device.

[0067] According to one embodiment, the reference output ratio may be the ratio of the waveform energy of a first test audio signal recorded at the speaker output of the audio device to the waveform energy of a first test audio signal recorded at the speaker output of the electronic device. The modified output ratio may be the ratio of the waveform energy of a second test audio signal recorded at the speaker output of the audio device to the waveform energy of a second test audio signal recorded at the speaker output of the electronic device.

[0068] According to one embodiment, the at least one processor can change the volume of at least one of the electronic device and the audio device by user input.

[0069] According to one embodiment, the at least one processor can control the communication interface to receive information indicating that the volume of the audio device has been changed.

[0070] According to one embodiment, the at least one processor can control the communication interface to transmit the second test audio signal to the audio device when the volume of at least one of the electronic device and the audio device is changed.

[0071] According to one embodiment, the at least one processor can calculate an audio correction gain to be applied to the audio device such that the change output ratio is the reference output ratio.

[0072] According to one embodiment, the at least one processor can transmit an audio signal to which the audio correction gain has been applied to the audio device.

[0073] According to one embodiment, the electronic device may include a display device and a video playback device. The audio device may include a speaker and a soundbar.

[0074] Additionally, according to one embodiment of the present disclosure, a method of operating an electronic device may include: an operation of recording a first test audio signal, each output through a speaker of the electronic device and a speaker of the audio device, respectively, based on a volume set by user input, respectively by the electronic device and an audio device connected to the electronic device; an operation of calculating a reference output ratio based on each of the first test audio signals recorded; an operation of recording a second test audio signal, each output through a speaker of the electronic device and a speaker of the audio device, respectively, when the volume of at least one of the electronic device and the audio device is changed; an operation of calculating a changed output ratio based on each of the second test audio signals recorded; and an operation of calculating an audio correction gain to be applied to the audio device based on the reference output ratio and the changed output ratio.

[0075] According to one embodiment, the method may further include the operation of transmitting the first test audio signal to the audio device so that the first test audio signal is output through the speaker of the audio device.

[0076] According to one embodiment, the reference output ratio may be the ratio of the waveform energy of a first test audio signal recorded at the speaker output of the audio device to the waveform energy of a first test audio signal recorded at the speaker output of the electronic device. The modified output ratio may be the ratio of the waveform energy of a second test audio signal recorded at the speaker output of the audio device to the waveform energy of a second test audio signal recorded at the speaker output of the electronic device.

[0077] According to one embodiment, the method may further include an operation of changing the volume of at least one of the electronic device and the audio device by user input.

[0078] According to one embodiment, the method may further include the operation of receiving information indicating that the volume of the audio device has been changed.

[0079] According to one embodiment, the method may further include the operation of transmitting the second test audio signal to the audio device when the volume of at least one of the electronic device and the audio device is changed.

[0080] According to one embodiment, the operation of calculating an audio correction gain to be applied to the audio device based on the reference output ratio and the changed output ratio may be an operation of calculating an audio correction gain to be applied to the audio device such that the changed output ratio becomes the reference output ratio.

[0081] According to one embodiment, the method may further include the operation of transmitting an audio signal to which the audio correction gain has been applied to the audio device.

[0082] According to one embodiment, the electronic device may include a display device and a video playback device. The audio device may include a speaker and a soundbar.

[0083] Additionally, according to one embodiment of the present disclosure, a computer-readable recording medium may be included on which a program for performing the method is recorded.

[0084] The electronic device according to the various embodiments disclosed in this document may be of various forms. The electronic device may include, for example, a display device, a portable communication device (e.g., a smartphone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a consumer electronics device. The electronic device according to the embodiments of this document is not limited to the devices described above.

[0085] The various embodiments of this document and the terms used therein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various modifications, equivalents, or substitutions of said embodiments. For example, a component expressed in the singular should be understood as a concept including a plural component unless the context clearly implies only the singular. It should be understood that the term "and / or" as used in this document encompasses any possible combination of one or more of the listed items. Terms such as "comprising," "having," and "consisting of" used in this disclosure are intended merely to indicate the existence of the features, components, parts, or combinations thereof described in this disclosure, and the use of such terms is not intended to exclude the existence or addition of one or more other features, components, parts, or combinations thereof. In this document, each of the phrases such as “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” may include any one of the items listed together in the corresponding phrase, or all possible combinations thereof. Terms such as “first,” “second,” or “first” or “second” may be used simply to distinguish a component from another component and do not limit the components in any other aspect (e.g., importance or order).

[0086] The terms “part” or “module” as used in the 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, for example. The “part” or “module” may be a component formed integrally, or a minimum unit of said component or a part thereof that performs one or more functions. For example, according to one embodiment, the “part” or “module” may be implemented in the form of an application-specific integrated circuit (ASIC).

[0087] In the various embodiments of this document, the term “in the case of” as used may be interpreted, depending on the context, to mean “when,” “at the time of,” or “in response to a decision,” or “in response to a detection.” Similarly, “in the case where it is determined,” or “in the case where it is detected,” may be interpreted, depending on the context, to mean “at the time of determination,” or “in response to a decision,” or “at the time of detection,” or “in response to a detection.”

[0088] The program executed by the electronic device (100, 300) and audio device (110) described in this document may be implemented as a hardware component, a software component, and / or a combination of a hardware component and a software component. The program may be executed by any system capable of executing computer-readable instructions.

[0089] Software may include computer programs, code, instructions, or a combination of one or more of these, and may configure a processing unit to operate as desired or command the processing unit independently or collectively. Software may be implemented as a computer program containing instructions stored on computer-readable storage media. Examples of computer-readable storage media include magnetic storage media (e.g., ROM (Read-Only Memory), RAM (Random-Access Memory), floppy disks, hard disks, etc.) and optical reading media (e.g., CD-ROMs, DVDs (Digital Versatile Discs)). Computer-readable storage media may be distributed across networked computer systems, allowing computer-readable code to be stored and executed in a distributed manner. Computer programs may be distributed online (e.g., download or upload) through an application store (e.g., Play Store™) or directly between two user devices (e.g., smartphones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily created on a device-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.

[0090] According to various embodiments, each component (e.g., module or program) of the components described above may include a singular or multiple entities, and some of the multiple entities may be separated and placed in other components. According to various embodiments, one or more of the components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Generally or additionally, multiple components (e.g., module or program) may be integrated into a single component. In this case, the integrated component may perform one or more functions of each of the multiple components in the same or similar manner as those performed by the corresponding component among the multiple components prior to integration. According to various embodiments, operations performed by the module, program, or other components 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 electronic devices, A communication interface that communicates with an audio device; A speaker that outputs an audio signal; Memory for storing at least one instruction; and It includes at least one processor electrically connected to the communication interface, the speaker, and the memory, and executing at least one instruction; The above-mentioned at least one processor is, Based on the volume set by user input in the electronic device and the audio device, respectively, a first test audio signal output through the speaker and the speaker of the audio device, respectively is recorded; Calculate a reference output ratio based on the first test audio signals each recorded above; When the volume of at least one of the electronic device and the audio device is changed, a second test audio signal output through the speaker and the speaker of the audio device, respectively, is recorded; Calculate the change output ratio based on the second test audio signals each recorded above; An electronic device that calculates an audio correction gain to be applied to the audio device based on the above reference output ratio and the above modified output ratio.

2. In Paragraph 1, The above-mentioned at least one processor is, An electronic device that controls the communication interface to transmit the first test audio signal to the audio device so that the first test audio signal is output through the speaker of the audio device.

3. In Paragraph 1, The above standard output ratio It is the ratio of the waveform energy of the first test audio signal, which is the speaker output of the audio device, to the waveform energy of the first test audio signal, which is the speaker output of the electronic device; The above change output ratio An electronic device, wherein the ratio of the waveform energy of a second test audio signal, which is the waveform energy of the speaker output of the audio device, to the waveform energy of a second test audio signal, which is the waveform energy of the speaker output of the electronic device.

4. In Paragraph 1, The above-mentioned at least one processor is, An electronic device that changes the volume of at least one of the electronic device and the audio device by user input.

5. In Paragraph 1, The above-mentioned at least one processor is, An electronic device that controls the communication interface to receive information indicating that the volume of the audio device has been changed.

6. In Paragraph 1, The above-mentioned at least one processor is, An electronic device that controls the communication interface to transmit the second test audio signal to the audio device when the volume of at least one of the electronic device and the audio device is changed.

7. In Paragraph 1, The above-mentioned at least one processor is, An electronic device that calculates an audio correction gain to be applied to the audio device such that the above change output ratio becomes the above reference output ratio.

8. In Paragraph 1, The above-mentioned at least one processor is, An electronic device that transmits an audio signal to the audio device to which the above audio correction gain has been applied.

9. In Paragraph 1, The above electronic device includes a display device and an image playback device; The above audio device is an electronic device comprising a speaker and a soundbar.

10. In the method of operation of an electronic device, An operation of recording a first test audio signal, each output through the speaker of the electronic device and the speaker of the audio device, respectively, based on a volume respectively set by user input in the electronic device and the audio device connected to the electronic device; The operation of calculating a reference output ratio based on the first test audio signals each recorded above; When the volume of at least one of the electronic device and the audio device is changed, the operation of recording a second test audio signal output through the speaker of the electronic device and the speaker of the audio device, respectively; The operation of calculating a change output ratio based on the second test audio signals each recorded above; and A method comprising the operation of calculating an audio correction gain to be applied to the audio device based on the reference output ratio and the modified output ratio.

11. In Paragraph 10, A method further comprising the operation of transmitting the first test audio signal to the audio device so that the first test audio signal is output through the speaker of the audio device.

12. In Paragraph 10, The above standard output ratio It is the ratio of the waveform energy of the first test audio signal, which is the speaker output of the audio device, to the waveform energy of the first test audio signal, which is the speaker output of the electronic device; The above change output ratio A method in which the ratio of the waveform energy of a second test audio signal, which is the waveform energy of a second test audio signal, which is the waveform energy of a speaker output of an audio device, is to the waveform energy of a second test audio signal, which is the waveform energy of a speaker output of an electronic device.

13. In Paragraph 10, An operation to change the volume of at least one of the electronic device and the audio device by user input; and A method further comprising the operation of receiving information indicating that the volume of the above audio device has been changed.

14. In Paragraph 10, A method further comprising the operation of transmitting the second test audio signal to the audio device when the volume of at least one of the electronic device and the audio device is changed.

15. In Paragraph 10, The operation of calculating an audio correction gain to be applied to the audio device based on the above reference output ratio and the above changed output ratio is A method of calculating an audio correction gain to be applied to the audio device such that the above change output ratio becomes the above reference output ratio.

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