Audio power amplifier and control method and device thereof

Abstract

The invention relates to an audio power amplifier and a control method and device thereof. The control method comprises the following steps: detecting signal energy of an input signal of the audio power amplifier; according to the signal energy of the input signal, power-on and power-off control is carried out on a driving circuit in the audio power amplifier; wherein the driving circuit is electrically connected with the loudspeaker, and the driving circuit is used for driving the loudspeaker to work. According to the embodiment of the invention, whether the power supply of the driving circuit is started or not is determined by judging the size of the input signal of the audio power amplifier, so that the power consumption of the audio power amplifier for processing mute voice or voice with smaller volume can be greatly reduced.

Description

Technical Field

[0001] The present disclosure relates to the field of audio, and can be extended to the field of audio power amplifiers such as mobile phones, automobiles, and household appliances, and particularly relates to an audio power amplifier, a control method thereof, and a control device thereof. Background Art

[0002] An audio power amplifier, abbreviated as a power amplifier, usually specifically refers to a most basic device in an audio system. Its task is to amplify a weak electrical signal from a signal source to drive a speaker to emit sound. In related technologies, in a scenario where there is sound playback, the audio power amplifier is always in a working state, which will greatly increase the power consumption of the audio power amplifier. Summary of the Invention

[0003] The present disclosure provides an audio power amplifier, a control method thereof, and a control device thereof.

[0004] According to a first aspect of an embodiment of the present disclosure, a control method for an audio power amplifier is provided, including:

[0005] Detecting signal energy of an input signal of the audio power amplifier;

[0006] Performing on-off control on a driving circuit in the audio power amplifier according to the signal energy of the input signal; wherein, the driving circuit is electrically connected to a speaker, and the driving circuit is used to drive the speaker to work.

[0007] According to a second aspect of an embodiment of the present disclosure, a control device for an audio power amplifier is provided, including:

[0008] A detection module, configured to detect signal energy of an input signal of the audio power amplifier;

[0009] A control module, configured to perform on-off control on a driving circuit in the audio power amplifier according to the signal energy of the input signal; wherein, the driving circuit is electrically connected to a speaker, and the driving circuit is used to drive the speaker to work.

[0010] According to a third aspect of an embodiment of the present disclosure, an audio power amplifier is provided, including:

[0011] A driving circuit, the driving circuit is electrically connected to a speaker, and the driving circuit is used to drive the speaker to work;

[0012] One or more processors; wherein, the audio power amplifier is configured to execute the control method for the audio power amplifier described in the foregoing first aspect.

[0013] According to a fourth aspect of the embodiments of the present disclosure, there is provided an audio device including the audio power amplifier described in the third aspect above.

[0014] According to a fourth aspect of the embodiments of the present disclosure, there is provided an audio device including: one or more processors; wherein, the audio device is configured to execute the control method of the audio power amplifier as described in the first aspect above.

[0015] According to a fifth aspect of the embodiments of the present disclosure, there is provided a chip or a chip system. The chip or the chip system includes a processor circuit configured to execute the method described in the optional implementation manner of the first aspect above.

[0016] According to a sixth aspect of the embodiments of the present disclosure, there is provided a storage medium storing instructions that, when running on an audio device, cause the audio device to execute the method described in the optional implementation manner of the first aspect.

[0017] According to a seventh aspect of the embodiments of the present disclosure, there is provided a computer program product including a computer program that, when executed by a processor, implements the steps of the method described in the optional implementation manner of the first aspect above.

[0018] The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:

[0019] It is possible to determine whether to supply power to the drive circuit according to the signal energy magnitude of the input signal, so as to effectively manage the power consumption of the audio power amplifier; for example, when the input signal is a voice with a large volume, power is supplied to the drive circuit to make the drive circuit work; when the input signal is a silent voice or a voice with a small volume, the power supply to the drive circuit is disconnected to make the drive circuit stop working, thereby greatly reducing the power consumption of the audio power amplifier when processing silent voices or voices with small volumes, and solving the problem of large static power consumption (I VDD ) of the audio power amplifier.

[0020] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present invention and, together with the specification, are used to explain the principles of the present invention.

[0022] Figure 1 is a flowchart of a control method of an audio power amplifier shown according to an exemplary embodiment.

[0023] Figure 2It is a flowchart of a control method for an audio power amplifier shown according to an exemplary embodiment.

[0024] Figure 3 It is a schematic diagram of the flow of a control method for an audio power amplifier shown according to an exemplary embodiment.

[0025] Figure 4 It is a block diagram of a control device for an audio power amplifier shown according to an exemplary embodiment.

[0026] Figure 5 It is an example diagram of an audio power amplifier shown according to an exemplary embodiment.

[0027] Figure 6 It is a block diagram of an audio device shown according to an exemplary embodiment.

[0028] Figure 7 It is a block diagram of an audio device 700 shown according to an exemplary embodiment.

[0029] Figure 8 It is a schematic structural diagram of a chip 800 proposed by an embodiment of the present disclosure. Detailed implementation manners

[0030] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present invention. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0031] The embodiments of the present disclosure are not exhaustive, but only schematic of some embodiments, and do not specifically limit the protection scope of the present disclosure. Without contradiction, each step in an embodiment can be implemented as an independent embodiment, and the steps can be combined arbitrarily. For example, the solution after removing some steps in an embodiment can also be implemented as an independent embodiment, and the order of the steps in an embodiment can be arbitrarily exchanged. Additionally, the optional implementation manners in an embodiment can be combined arbitrarily; furthermore, the embodiments can be combined arbitrarily. For example, some or all of the steps of different embodiments can be combined arbitrarily, and an embodiment can be combined arbitrarily with the optional implementation manners of other embodiments.

[0032] In each of the disclosed embodiments, unless otherwise specified and there is no logical conflict, the terms and / or descriptions among the embodiments are consistent and can be cited from each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships. The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments, and are not intended to limit the present disclosure.

[0033] It should be noted that in the technical solution of the present disclosure, the collection, storage, use, processing, transmission, provision, and disclosure of the user's personal information and other processing comply with the provisions of relevant laws and regulations and do not violate public order and good customs.

[0034] It should also be noted that the information (including but not limited to user device information, user personal information, etc.), data (including but not limited to data for analysis, stored data, displayed data, etc.), and signals involved in the present disclosure are all authorized by the user or fully authorized by all parties, and the collection, use, and processing of relevant data need to comply with the relevant laws, regulations, and standards of relevant countries and regions.

[0035] An audio power amplifier, abbreviated as power amplifier, usually specifically refers to a most basic device in an audio system. Its task is to amplify the weak electrical signal from the signal source to drive the speaker to emit sound. In a sound playback scenario, the audio power amplifier is always in a working state. For example, even when playing a silent file or the volume is in an inaudible state, the audio power amplifier is still in a working state.

[0036] In the related art, usually the voltage follower technology is adopted to adjust the supply voltage according to the magnitude of the digital signal (i.e., the input signal) to reduce the power consumption of the audio power amplifier. However, when the digital signal (i.e., the input signal) is silent or less than a certain threshold, the supply voltage will be set to a fixed value (such as VP or PVDD), and at this time, the static current will be wasted in vain, that is, the power consumption of the audio power amplifier will still be wasted.

[0037] Based on this, the embodiments of the present disclosure propose an audio power amplifier, its control method and device, which can effectively manage the power consumption of the audio power amplifier. For example, it can greatly reduce the power consumption of the audio power amplifier when processing silent speech or speech with a small volume.

[0038] Figure 1 It is a flowchart of a control method of an audio power amplifier shown according to an exemplary embodiment. It should be noted that this control method can be applied to an audio device. In some embodiments, the audio device can be a terminal (such as a personal digital assistant like a mobile phone, a tablet computer, etc.), or an in-vehicle terminal in a car, or an audio system on an Internet of Things (IoT) device (such as household appliances, etc.). AsFigure 1 As shown, the control method may include but is not limited to the following steps.

[0039] In step 101, the signal energy of the input signal of the audio power amplifier is detected.

[0040] In some embodiments, the signal energy magnitude of the input signal of the audio power amplifier may be detected by a detection module. Exemplarily, the detection module may be implemented in the form of calling software. For example, an instruction is called to detect the signal energy of the input signal of the audio power amplifier. Exemplarily, the detection module may be implemented in the form of a hardware circuit, and the function of the detection module may be implemented through the design of the hardware circuit. The above hardware circuit may be understood as one or more processors. For example, in one implementation, the above hardware circuit is an application-specific integrated circuit (ASIC), and the function of the detection module is implemented through the design of the logical relationship of the components in the circuit. Again, for example, in another implementation, the above hardware circuit may be implemented by a programmable logic device (PLD).

[0041] In step 102, power-on and power-off control is performed on the drive circuit according to the signal energy of the input signal.

[0042] In some embodiments, the above drive circuit is a circuit in the audio power amplifier. In some embodiments, the above drive circuit is electrically connected to the speaker, and the drive circuit is used to drive the speaker to work. Exemplarily, the speaker may be a component in the audio power amplifier, or the speaker may not be a component in the audio power amplifier (that is, the speaker may be an external component of the audio power amplifier).

[0043] In the embodiments of the present disclosure, power-on and power-off control may be performed on the drive circuit according to the signal energy magnitude of the input signal. Exemplarily, it is determined whether to turn on the power supply of the drive circuit according to the signal energy of the input signal. Herein, "turning on the power supply of the drive circuit" may refer to turning on the power supply to the drive circuit, that is, making the drive circuit work. Exemplarily, when the input signal is a silent voice or a voice with a small volume, the power supply to the drive circuit is disconnected to make the drive circuit stop working; when the input signal is a voice with a large volume, the power supply to the drive circuit is turned on to make the drive circuit work.

[0044] By implementing the embodiments of the present disclosure, it is possible to determine whether to supply power to the drive circuit according to the signal energy of the input signal, so as to effectively manage the power consumption of the audio power amplifier. For example, when the input signal is a voice with a relatively high volume, the power supply to the drive circuit is turned on to make the drive circuit work; when the input signal is a silent voice or a voice with a relatively low volume, the power supply to the drive circuit is disconnected to make the drive circuit stop working, thereby greatly reducing the power consumption of the audio power amplifier when processing silent voices or voices with relatively low volumes, and the problem of relatively high static power consumption (I VDD ) of the audio power amplifier can be solved.

[0045] Figure 2 FIG. is a flowchart of a control method for an audio power amplifier according to an exemplary embodiment. It should be noted that this control method can be applied to audio devices. As Figure 2 shown, this control method may include but is not limited to the following steps.

[0046] In step 201, the signal energy of the input signal of the audio power amplifier is detected.

[0047] An optional implementation manner of step 201 can refer to Figure 1 the optional implementation manner of step 101 of Figure 1 and other related parts in the embodiments involved, which will not be elaborated here.

[0048] In step 202, according to the signal energy of the input signal, the drive circuit is controlled to be powered on and off through the switch unit.

[0049] In some embodiments, the above drive circuit is a circuit in the audio power amplifier. In some embodiments, the above drive circuit is electrically connected to the speaker, and the drive circuit is used to drive the speaker to work. Exemplarily, the speaker may be a component in the audio power amplifier, or the speaker may not be a component in the audio power amplifier (that is, the speaker may be an external component of the audio power amplifier).

[0050] In some embodiments, the above audio power amplifier may include a switch unit, and the switch unit is used to turn on or off the power supply to the drive circuit. Exemplarily, the signal energy of the input signal can be compared with a signal energy threshold, and the switch unit is controlled to close or open according to the comparison result to achieve power-on and power-off control of the drive circuit. In an optional implementation manner, the signal energy of the input signal is compared numerically with the signal energy threshold, or alternatively, the signal energy of the input signal can be compared logically with the signal energy threshold. Here, the present disclosure does not make any limitations in this regard and will not elaborate further.

[0051] In some embodiments, the signal energy of the input signal is compared with a signal energy threshold; when it is determined that the signal energy of the input signal is greater than the signal energy threshold, the switch unit is controlled to be in a closed state to turn on the power supply to the driving circuit, so that the driving circuit operates; or, when it is determined that the signal energy of the input signal is less than or equal to the signal energy threshold, for example, when the input signal of the audio power amplifier is a silent voice or a voice with a volume in an inaudible state, the switch unit is controlled to be in an open state to cut off the power supply to the driving circuit, so that the driving circuit stops operating. It should be noted that, in some embodiments, the signal energy threshold may be a preset calibration value. For example, the signal energy threshold may be set according to the actual situation. For example, the signal energy threshold may refer to a volume in an inaudible state. If it is greater than this volume, it can be heard by the human ear, and if it is equal to or less than this volume, it cannot be heard by the human ear.

[0052] In some embodiments, the above-mentioned switch unit may include, but is not limited to, a MOS (Metal Oxide Semiconductor) transistor. Or, the switch unit may also be other switches, such as a multi-throw switch (such as a single-pole double-throw switch or a double-pole double-throw switch, etc.), or it may also be a diode, or a triode, etc. The present disclosure does not make a limitation here and will not elaborate further.

[0053] Exemplarily, taking the switch unit as a MOS transistor as an example, the signal energy of the detected input signal can be compared with the signal energy threshold. If the signal energy of the input signal is greater than the signal energy threshold, the MOS transistor can be controlled to conduct, turning on the power supply to the driving circuit, so that the driving circuit operates. If the signal energy of the input signal is less than or equal to the signal energy threshold, the MOS transistor can be controlled to turn off to cut off the power supply to the driving circuit, so that the driving circuit stops operating and the power consumption is reduced.

[0054] In some embodiments, the optional implementation of making the drive circuit work may include: adjusting the supply voltage of the drive circuit according to the signal energy of the input signal. Exemplarily, if the signal energy of the input signal is greater than the signal energy threshold, the MOS transistor can be controlled to conduct, and the power supply to the drive circuit can be turned on. When the signal energy of the input signal is greater than the signal energy threshold and the power supply to the drive circuit is turned on to make the drive circuit work, the supply voltage of the drive circuit can be adjusted according to the magnitude of the signal energy of the input signal. Exemplarily, the smaller the signal energy of the input signal, the smaller the supply voltage of the drive circuit; the greater the signal energy of the input signal, the greater the supply voltage of the drive circuit, and the maximum supply voltage of the drive circuit cannot be greater than the voltage maximum threshold. Thus, when the signal energy of the input signal is greater than the signal energy threshold, the supply voltage of the drive circuit can be adjusted according to the magnitude of the signal energy of the input signal, thereby further effectively managing the power consumption of the audio power amplifier. Another possible implementation is to set the supply voltage of the drive circuit at a fixed value when the signal energy of the input signal is greater than the signal energy threshold to make the drive circuit work properly.

[0055] In some embodiments, signal delay processing is performed on the input signal, and the signal delay processing is used to eliminate the time delay generated by the on-off control of the drive circuit. Exemplarily, the input signal can be subjected to signal delay processing through a delay circuit. In one possible implementation, the delay circuit may include, but is not limited to, a filter.

[0056] Exemplarily, after comparing the magnitude of the detected signal energy of the input signal with the signal energy threshold, the input signal can be subjected to signal delay processing to facilitate eliminating the time delay generated by the on-off control of the drive circuit. Exemplarily, the length of the time delay used for the signal delay processing can be determined by the length of the time delay generated by the on-off control of the drive circuit. For example, if the length of the time delay generated by the on-off control of the drive circuit obtained through a large number of tests is 5 milliseconds, the length of the time delay used for the signal delay processing can be set to 5 milliseconds, that is: the input signal can be subjected to signal time delay processing, such as delaying for 5 milliseconds, to eliminate the time delay generated by the on-off control of the drive circuit.

[0057] Exemplarily, after the detected signal energy of the input signal is greater than the signal energy threshold, the input signal is subjected to signal delay processing to facilitate eliminating the time delay effect of the conduction of the switching unit. That is: after the detected signal energy of the input signal is less than or equal to the signal energy threshold, the input signal is not subjected to signal delay processing.

[0058] To facilitate those skilled in the art to more clearly understand the present disclosure, the following will be combined with Figure 3 be described in detail.

[0059] For example, as Figure 3 shown, the input signal of the audio power amplifier passes through a detection module (such as an energy detection module) to detect the energy magnitude of the input signal. The logic judgment module logically compares the signal energy detection result of the input signal with an internal threshold (such as a signal energy threshold). When the signal energy of the input signal is greater than the threshold, the MOS transistor conducts, and the drive circuit operates normally; if the signal energy of the input signal is less than or equal to the threshold, the MOS transistor disconnects, the drive circuit is powered off, and the operation is reduced. Optionally, the input signal can also be subjected to signal delay processing through a signal delay circuit to eliminate the time delay effect of the MOS transistor conduction.

[0060] By implementing the embodiments of the present disclosure, the power-on and power-off control of the drive circuit can be performed through the switch unit according to the signal energy magnitude of the input signal, so that the power consumption of the audio power amplifier can be effectively managed; for example, when the input signal is a voice with a large volume, the power supply to the drive circuit is turned on to enable the drive circuit to operate; when the input signal is a silent voice or a voice with a small volume, the power supply to the drive circuit is disconnected to enable the drive circuit to stop working, thereby greatly reducing the power consumption of the audio power amplifier when processing silent voices or voices with small volumes, and the static power consumption (I VDD ) of the audio power amplifier can be solved.

[0061] Figure 4 is a block diagram of a control device for an audio power amplifier shown according to an exemplary embodiment. As Figure 4 shown, the control device 400 of the audio power amplifier may include, but is not limited to: a detection module 401 and a control module 402.

[0062] Among them, the detection module 401 is used to detect the signal energy of the input signal of the audio power amplifier.

[0063] The control module 402 is used to perform power-on and power-off control on the drive circuit in the audio power amplifier according to the signal energy of the input signal; among them, the drive circuit is electrically connected to the speaker, and the drive circuit is used to drive the speaker to work.

[0064] In some embodiments, the audio power amplifier includes a switch unit, and the switch unit is used to turn on or off the power supply to the drive circuit. Among them, the control module 402 is specifically used to: perform power-on and power-off control on the drive circuit in the audio power amplifier through the switch unit according to the signal energy of the input signal.

[0065] In some embodiments, an alternative implementation for the control module 402 to control the power-on and power-off of the driving circuit in the audio power amplifier according to the signal energy of the input signal may include: comparing the signal energy of the input signal with a signal energy threshold; determining that the signal energy of the input signal is greater than the signal energy threshold, controlling the switch unit to be in a closed state to turn on the power supply to the driving circuit, so that the driving circuit operates; or, determining that the signal energy of the input signal is less than or equal to the signal energy threshold, controlling the switch unit to be in an open state to cut off the power supply to the driving circuit, so that the driving circuit stops operating.

[0066] In some embodiments, an alternative implementation for the control module 402 to make the driving circuit operate includes: adjusting the supply voltage of the driving circuit according to the signal energy of the input signal.

[0067] In some embodiments, the control module 402 is further configured to: perform signal delay processing on the input signal, and the signal delay processing is used to eliminate the time delay generated by the power-on and power-off control of the driving circuit.

[0068] Regarding the device in the above embodiments, the specific manners in which each module performs operations have been described in detail in the embodiments related to the method, and will not be elaborated herein.

[0069] In some embodiments, the control module may be a single module or may include multiple sub-modules. Optionally, the above-mentioned multiple sub-modules respectively execute all or part of the steps required to be executed by the control module. Optionally, the control module may be interchangeable with the processor.

[0070] Figure 5 is an exemplary diagram of an audio power amplifier shown according to an exemplary embodiment. As Figure 5 shown, the audio power amplifier 500 may include: a driving circuit 501, the driving circuit 501 is electrically connected to a speaker (SPK), and the driving circuit 501 is used to drive the speaker to operate. As Figure 5 shown, the audio power amplifier 500 may include one or more processors 502. The processor 502 may be a general-purpose processor or a dedicated processor, etc. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control an audio device (for example, it may be a mobile phone, an automobile, a household appliance, etc.), execute programs, and process program data. Optionally, the audio power amplifier 500 is used to execute any of the above methods. Optionally, one or more processors 502 are used to call instructions to cause the audio power amplifier 500 to execute any of the above methods.

[0071] In some embodiments, as Figure 5As shown, the audio power amplifier 500 may include a switching unit 503. The control terminal of the switching unit 503 is communicatively connected to the processor 502. The first terminal of the switching unit 503 is electrically connected to the driving circuit 501. The second terminal of the switching unit 503 is grounded. The switching unit 503 can be used to turn on or off the power supply to the driving circuit 501. Exemplarily, the processor 502 controls the power on and off of the driving circuit 501 through the switching unit 503 according to the signal energy of the input signal.

[0072] In some embodiments, the switching unit 503 may be a MOS transistor. Exemplarily, the MOS transistor is an N-type MOS transistor or a P-type MOS transistor. For example, the MOS transistor is an N-type MOS transistor, as Figure 3 shown, the gate of the N-type MOS transistor is communicatively connected to the processor 502, the source of the N-type MOS transistor is grounded, the drain of the N-type MOS transistor is electrically connected to the driving circuit 501, and the N-type MOS transistor can be used to turn on or off the power supply to the driving circuit 501. Exemplarily, when the N-type MOS transistor is turned on, the driving circuit 501 operates normally. When the N-type MOS transistor is turned off, the driving circuit 501 is powered off.

[0073] In some embodiments, as Figure 5 shown, the audio power amplifier 500 may include a detection module 504. The detection module 504 is used to detect the energy of the input signal of the audio power amplifier. In some embodiments, as Figure 5 shown, the audio power amplifier 500 may include a logic judgment module 505. The logic judgment module 505 is used to perform a logic comparison between the signal energy output by the detection module 504 and an internal threshold.

[0074] In some embodiments, as Figure 5 shown, the audio power amplifier 500 may include a delay circuit 506. Exemplarily, one end of the delay circuit 506 is connected to the logic judgment module 505, and the other end of the delay circuit 506 is connected to the driving circuit 501. The delay circuit 506 is used to perform signal delay processing on the input signal. This signal delay processing is used to eliminate the time delay generated by the power on and off control of the driving circuit 501. Exemplarily, the delay circuit 506 may include a filter.

[0075] In some embodiments, the audio power amplifier 500 may include one or more interface circuits. Optionally, the interface circuit can be used to receive data (such as audio signals, etc.).

[0076] Figure 6It is a block diagram of an audio device shown according to an exemplary embodiment. For example, the audio device 600 may be a mobile phone, a digital broadcast terminal, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc., and may also be a household appliance, an automobile, etc. with a power amplifier function. Refer to Figure 6 , the audio device 600 may include the audio power amplifier 500 described in any of the above embodiments, and its optional implementation manners may be referred to Figure 5 the relevant descriptions of the embodiments shown, which will not be elaborated here.

[0077] Figure 7 It is a block diagram of an audio device 700 shown according to an exemplary embodiment. The audio device 700 may be a mobile phone, a digital broadcast terminal, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc., and may also be a household appliance, an automobile, etc. with a power amplifier function, and may also be a chip, a chip system, or a processor, etc. that supports a mobile phone, a digital broadcast terminal, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc. to implement any of the above methods, and may also be a chip, a chip system, or a processor, etc. that supports a household appliance, an automobile, etc. to implement any of the above methods. The audio device 700 can be used to implement the methods described in the above method embodiments, and specifically, reference may be made to the descriptions in the above method embodiments.

[0078] As Figure 7 shown, the audio device 700 may include one or more processors 701. The processor 701 may be a general-purpose processor or a dedicated processor, etc. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control a communication device (such as a mobile phone, a digital broadcast terminal, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc., and may also be a household appliance, an automobile, etc. with a power amplifier function), execute programs, and process program data. Optionally, the audio device 700 is used to execute any of the above methods. Optionally, one or more processors 701 are used to call instructions to cause the audio device 700 to execute any of the above methods.

[0079] In some embodiments, the audio device 700 may further include one or more transceivers 702. When the audio device 700 includes one or more transceivers 702, the transceivers 702 are used to receive audio signals, and the processor 701 is used to execute the steps in any of the above methods. In an alternative embodiment, the transceiver may include a receiver and / or a transmitter, and the receiver and the transmitter may be separate or integrated together. Optionally, terms such as transceiver, transceiver unit, transceiver machine, transceiver circuit, interface circuit, interface, etc. may be used interchangeably, terms such as transmitter, transmitter unit, transmitter machine, transmitter circuit, etc. may be used interchangeably, and terms such as receiver, receiver unit, receiver machine, receiver circuit, etc. may be used interchangeably.

[0080] In some embodiments, the audio device 700 further includes one or more memories 703 for storing data. Optionally, all or part of the memories 703 may also be outside the audio device 700. In an alternative embodiment, the audio device 700 may include one or more interface circuits 704. Optionally, the interface circuit 704 is connected to the memory 703, and the interface circuit 704 can be used to receive data from the memory 703 or other devices and can be used to send data to the memory 703 or other devices. For example, the interface circuit 704 can read the data stored in the memory 703 and send the data to the processor 701.

[0081] The audio device 700 described in the above embodiments can be a mobile phone, a digital broadcast terminal, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc., and can also be household appliances, automobiles, etc. with power amplifier functions. However, the scope of the audio device 700 described in this disclosure is not limited thereto, and the structure of the audio device 700 can be Figure 7 unrestricted. The audio device can be an independent device or can be part of a larger device. For example, the audio device can be: 1) an independent integrated circuit IC, or chip, or chip system or subsystem; (2) a set of one or more ICs. Optionally, the above IC set may also include storage components for storing data and programs; (3) an ASIC, such as a modem, such as an audio power amplifier; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, a smart terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0082] Figure 8 is a schematic structural diagram of the chip 800 proposed in the embodiments of the present disclosure. For the case where the audio device 700 can be a chip or a chip system, reference can be made to Figure 8 the schematic structural diagram of the chip 800 shown, but not limited thereto.

[0083] The chip 800 includes one or more processors 801. The chip 800 is used to execute any of the above methods.

[0084] In some embodiments, the chip 800 further includes one or more interface circuits 802. Optionally, terms such as interface circuit, interface, transceiver pin, etc. may be used interchangeably. In some embodiments, the chip 800 further includes one or more memories 803 for storing data. Optionally, all or part of the memories 803 may be outside the chip 800. Optionally, the interface circuit 802 is connected to the memory 803, and the interface circuit 802 can be used to receive data from the memory 803 or other devices, and the interface circuit 802 can be used to send data to the memory 803 or other devices. For example, the interface circuit 802 can read the data stored in the memory 803 and send the data to the processor 801.

[0085] In some embodiments, the interface circuit 802 can be used to receive audio signals. The interface circuit 802 can also be used to perform the following communication steps, for example, it means that the interface circuit 802 performs data interaction between the processor 801, the chip 800, the memory 803 or the transceiver device. In some embodiments, the processor 801 performs some or all of the steps in any of the above methods.

[0086] The various modules and / or devices described in the embodiments of the virtual device, physical device, chip, etc. can be arbitrarily combined or separated according to the situation. Optionally, some or all of the steps can also be executed by multiple modules and / or devices in cooperation, which is not limited here.

[0087] The present disclosure also provides a storage medium, on which instructions are stored. When the instructions run on the audio device 700, the audio device 700 is caused to execute any of the above methods. Optionally, the above storage medium is an electronic storage medium. Optionally, the above storage medium is a computer-readable storage medium, but not limited thereto, and it can also be other device-readable storage media. Optionally, the above storage medium can be a non-transitory storage medium, but not limited thereto, and it can also be a transitory storage medium.

[0088] The present disclosure also provides a program product. When the program product is executed by the audio device 700, the audio device 700 is caused to execute any of the above methods. Optionally, the above program product is a computer program product.

[0089] The present disclosure also provides a computer program. When it runs on a computer, the computer is caused to execute any of the above methods.

[0090] Other embodiments of the present invention will be readily apparent to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include known common general knowledge or conventional technical means in the technical field not disclosed in this disclosure. The specification and examples are only to be considered as exemplary, and the true scope and spirit of the invention are pointed out by the following claims.

[0091] It should be understood that the present invention is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

Claims

1. A control method for an audio power amplifier, characterized in that, Comprising: Detecting the signal energy of the input signal of the audio power amplifier; Controlling the power on and off of the drive circuit in the audio power amplifier according to the signal energy of the input signal; wherein, the drive circuit is electrically connected to the speaker, and the drive circuit is used to drive the speaker to work.

2. The method according to claim 1, characterized in that, The audio power amplifier includes a switch unit, and the switch unit is used to turn on or off the power supply to the drive circuit; the controlling the power on and off of the drive circuit in the audio power amplifier according to the signal energy of the input signal includes: Controlling the power on and off of the drive circuit in the audio power amplifier through the switch unit according to the signal energy of the input signal.

3. The method according to claim 2, wherein The controlling the power on and off of the drive circuit in the audio power amplifier through the switch unit according to the signal energy of the input signal includes: Comparing the signal energy of the input signal with a signal energy threshold; Determining that the signal energy of the input signal is greater than the signal energy threshold, controlling the switch unit to be in a closed state to turn on the power supply to the drive circuit, and enabling the drive circuit to work; or, Determining that the signal energy of the input signal is less than or equal to the signal energy threshold, controlling the switch unit to be in an open state to cut off the power supply to the drive circuit, and enabling the drive circuit to stop working.

4. The method according to claim 3, wherein The enabling the drive circuit to work includes: Adjusting the supply voltage of the drive circuit according to the signal energy of the input signal.

5. The method according to any one of claims 1-4, characterized in that, The method further includes: Performing signal delay processing on the input signal, and the signal delay processing is used to eliminate the delay generated by the power on and off control of the drive circuit.

6. A control device for an audio power amplifier, characterized in that, Comprising: A detection module for detecting the signal energy of the input signal of the audio power amplifier; A control module for controlling the power on and off of the drive circuit in the audio power amplifier according to the signal energy of the input signal; wherein, the drive circuit is electrically connected to the speaker, and the drive circuit is used to drive the speaker to work.

7. An audio power amplifier, characterized in that, Comprising: A drive circuit, the drive circuit is electrically connected to the speaker, and the drive circuit is used to drive the speaker to work; One or more processors; wherein, the audio power amplifier is used to execute the control method of the audio power amplifier according to any one of claims 1-5.

8. The audio power amplifier according to claim 7, characterized in that, Further comprising: A switch unit, the control end of the switch unit is communicatively connected to the processor, the first end of the switch unit is electrically connected to the drive circuit, the second end of the switch unit is grounded, and the switch unit is used to turn on or off the power supply to the drive circuit.

9. The audio power amplifier according to claim 8, wherein The switch unit includes a metal oxide semiconductor crystal MOS transistor.

10. The audio power amplifier according to any one of claims 7-9, characterized in that, Further comprising a delay circuit, wherein, The delay circuit is used to perform signal delay processing on the input signal, and the signal delay processing is used to eliminate the delay generated by the power on and off control of the drive circuit.

11. The audio power amplifier according to claim 10, characterized in that, The delay circuit includes a filter.

12. An audio device, characterized in that, Comprising: The audio power amplifier according to any one of claims 7-11.

13. An audio device, characterized in that, Comprising: One or more processors; Among them, the audio device is used to execute the control method of the audio power amplifier according to any one of claims 1-5.

14. A chip, characterized in that, Including: One or more processors; Among them, the chip is used to execute the control method of the audio power amplifier according to any one of claims 1-5.

15. A storage medium, the storage medium stores instructions, characterized in that, When the instruction runs on the audio device, the audio device is caused to execute the control method of the audio power amplifier according to any one of claims 1-5.

16. A computer program product, comprising a computer program, characterized in that, The computer program realizes the steps of the method according to any one of claims 1-5 when executed by a processor.

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