Electronic device, processing method and related device

Abstract

The embodiment of the present application provides an electronic device, a processing method and a related device, which are applied to the field of terminal technology. The electronic device includes: a battery, a boost unit, a first power amplifier unit and a first speaker; the output end of the battery is connected to the input end of the boost unit, the output end of the boost unit is connected to the first power amplifier unit, and the first power amplifier unit is also connected to the first speaker; the position of the boost unit and the battery is set so that the impedance value between the output end of the battery and the input end of the boost unit is less than the first threshold value, and the first threshold value makes the input voltage of the boost unit greater than or equal to the working voltage of the boost unit when the battery supplies power to the first speaker; the boost unit is used to amplify the input voltage of the boost unit and then output it; the first power amplifier unit is used to drive the first speaker to play sound. The embodiment of the present application is conducive to reducing the probability of sound freeze or noise when the electronic device plays sound through the speaker.

Description

Technical Field

[0001] The present application relates to the field of terminal technology, and in particular to an electronic device, a processing method and related devices. Background Art

[0002] When the battery level of an electronic device such as a tablet is low, for example, 30%, the sound may be stuck or contain noise when playing sound, such as calls or videos, through the speaker. Summary of the invention

[0003] The embodiments of the present application provide an electronic device, a processing method and related devices, which are applied to the field of terminal technology. In the embodiments of the present application, it is helpful to reduce the probability of sound freeze or noise when the electronic device plays sound through a speaker.

[0004] In a first aspect, an embodiment of the present application provides an electronic device, comprising: a battery, a boost unit, a first power amplifier unit and a first speaker; the output end of the battery is connected to the input end of the boost unit, the output end of the boost unit is connected to the first power amplifier unit, and the first power amplifier unit is also connected to the first speaker; the boost unit and the battery are positioned so that the impedance value between the output end of the battery and the input end of the boost unit is less than or equal to a first threshold value, and the first threshold value makes the input voltage of the boost unit greater than or equal to the working voltage of the boost unit when the battery powers the first speaker; the boost unit is used to amplify the input voltage of the boost unit and output it; the first power amplifier unit is used to drive the first speaker to play sound.

[0005] The impedance value between the output end of the battery and the input end of the boost unit is less than the first threshold value, which indicates that the impedance value between the output end of the battery and the input end of the boost unit is small. Thus, when the battery output voltage is small, even if a large power output is required and a large current is generated, the voltage drop of the impedance between the output end of the battery and the input end of the boost unit is small, so that the input voltage of the boost unit is greater than or equal to the working voltage of the boost unit, which is beneficial to reduce the probability of sound freeze or noise in the sound due to the inability of the boost unit to work. In addition, this can avoid reducing the peak power of the speaker and can avoid sacrificing its dynamic range performance.

[0006] The electronic device may also include more devices, such as a boost unit, a buck unit, a bypass unit, etc., which are not limited in the embodiments of the present application. The boost unit may also be referred to as a boost circuit, and the buck unit may also be referred to as a buck circuit, which are not limited in the embodiments of the present application.

[0007] In one possible implementation, the electronic device also includes a first unit, which is connected to the boost unit and is also connected to the first power amplifier unit; the first unit is used to power the first power amplifier unit so that the power output by the first power amplifier unit is greater than or equal to the power required by the first speaker to play sound.

[0008] The first unit may be one or more of a bypass unit, a buck unit, or a boost unit, which is not limited in the embodiments of the present application. The first unit supplies power to the first power amplifier unit, which is conducive to supporting the first speaker to play sound. The first unit can make the power output by the first power amplifier unit greater than or equal to the power required by the first speaker to play sound, which is conducive to achieving control of the output power of the first power amplifier unit.

[0009] In a specific embodiment, the first unit can refer to the buck and bypass circuit 3011.

[0010] In one possible implementation, the electronic device also includes a control unit; the control unit is used to set the first unit as a bypass unit when the voltage of the audio signal is within a first preset voltage range; or to set the first unit as a step-down unit when the voltage of the audio signal is within a second preset voltage range; wherein the voltage value within the first preset voltage range is greater than the voltage value within the second preset voltage range, and the audio signal is what the first speaker needs to play.

[0011] The control unit and the first unit may be in the same chip or in separate chips, which is not limited in the present application. The bypass unit is used to represent a device operating in a bypass mode, which can be understood as a wire that outputs an input voltage.

[0012] If the voltage of the audio signal is within the first preset voltage range, it can be said that the voltage value of the audio signal is large, the volume of the sound is large, and the required power is high. The control unit sets the first unit as a bypass unit, and the bypass unit outputs the input voltage so that the voltage increased by the boost unit is equal to the voltage output by the first unit. In this way, a loud audio signal can be played, which is conducive to obtaining a higher dynamic range performance of the speaker.

[0013] If the voltage of the audio signal is within the second preset voltage range, it can be said that the voltage value of the audio signal is small, the volume of the sound is small, and the required power is low. The control unit sets the first unit as a step-down unit, and the step-down unit steps down the input voltage and outputs it, so that the power output by the first unit can meet the power required by the first speaker to play the sound without causing power consumption waste. In this way, it is conducive to reducing the power consumption of electronic equipment and achieving higher working efficiency.

[0014] It should be noted that the embodiment of the present application takes the first preset voltage range and the second preset voltage range as examples for explanation, but the embodiment of the present application does not limit the number of preset voltage ranges. It is understood that the electronic device may also include a third preset voltage range and / or a fourth preset voltage range.

[0015] In one possible implementation, the control unit is further used to: when the voltage of the audio signal is within a second preset voltage range, set the step-down multiple of the step-down unit according to the voltage of the audio signal, wherein the voltage of the audio signal is inversely correlated with the step-down multiple of the step-down unit.

[0016] When the first unit is a step-down unit, the step-down multiple can be flexibly adjusted. When the voltage of the audio signal is within the second preset voltage range, the greater the voltage of the audio signal, the smaller the step-down multiple can be, which is beneficial to reducing the power consumption of the electronic device and achieving higher working efficiency.

[0017] In a possible implementation, the control unit is further configured to: when the voltage of the audio signal is within a second preset voltage range, reduce the amplification factor of the boost unit.

[0018] The amplification factor of the boost unit can be flexibly adjusted. If the voltage of the audio signal is within the second preset voltage range, it means that the voltage value of the audio signal is small, the volume of the sound is small, and the required power is low. The amplification factor of the boost unit can be reduced, which is beneficial to reduce the output power and thus reduce power consumption.

[0019] In one possible implementation, the electronic device also includes a control unit; the control unit is used to set the amplification factor of the boost unit according to the voltage of the audio signal, wherein the voltage of the audio signal is positively correlated with the amplification factor of the boost unit, and the audio signal is what the first speaker needs to play.

[0020] The amplification factor of the boost unit can be flexibly adjusted. If the voltage of the audio signal is larger, the volume is louder, and the power required is more, the amplification factor of the boost unit can be larger. This enables the output power of the boost unit to be flexibly adjusted according to the power required by the audio signal, which is beneficial to improving the output efficiency of the first power amplifier unit.

[0021] In a possible implementation, the electronic device further includes a first switch unit, which is connected in parallel with the boost unit; the first switch unit is configured to close when the output power of the battery can provide the power required for the first speaker to play sound.

[0022] The first switch unit can be in the same chip as the boost unit or in different chips, which is not limited in the embodiments of the present application. The first switch unit is connected in parallel with the boost unit. When the first switch unit is closed, the boost unit is short-circuited. When the first switch unit is disconnected, the boost unit can work. When the output power of the battery can provide the power required for the first speaker to play sound, the first switch unit is closed, the sound unit does not work, and the voltage of the battery supplies power to the first power amplifier unit, which is conducive to improving the working efficiency of the first power amplifier unit.

[0023] In a possible implementation, the electronic device further includes a second power amplifier unit and a second speaker; the output end of the boost unit is further connected to the second power amplifier unit, and the second power amplifier unit is further connected to the second speaker.

[0024] The embodiment of the present application can be applied to multi-speaker scenarios. The boost unit can be connected to multiple power amplifier units and multiple speakers. Since the output voltage is relatively large, the output current is relatively small when the output power is constant. The connection line used between the boost unit and the power amplifier unit can be relatively thin, which is conducive to saving wiring space.

[0025] In a possible implementation, the first threshold is such that when the output voltage of the battery is the minimum supply voltage, the input voltage of the boost unit is greater than or equal to the working voltage of the boost unit; or,

[0026] The first threshold value is such that when the difference between the output voltage of the battery and the minimum supply voltage is less than the second threshold value, the input voltage of the boost unit is greater than or equal to the working voltage of the boost unit; or,

[0027] The first threshold value ensures that when the output voltage of the battery is the minimum voltage required to support the first speaker to play sound, the input voltage of the boost unit is greater than or equal to the working voltage of the boost unit.

[0028] The minimum supply voltage is used to indicate the minimum voltage that the battery can output. If the battery can output a voltage of 3.3V to 4.5V, the minimum supply voltage is 3.3V. In the embodiment of the present application, when the output voltage of the battery is the minimum supply voltage, the input voltage of the boost unit can be greater than or equal to the working voltage of the boost unit, so that the first power amplifier unit can drive the first speaker to play sound, which is beneficial to reduce the probability of sound freeze or noise in the sound.

[0029] The difference between the output voltage of the battery and the minimum supply voltage is less than the second threshold value, which indicates that the output voltage of the battery is relatively small. In the embodiment of the present application, when the output voltage of the battery is relatively small, the input voltage of the boost unit can be greater than or equal to the operating voltage of the boost unit, which is beneficial to reducing the probability of sound freeze or noise in the sound.

[0030] The output voltage of the battery is the minimum voltage required to support the first speaker to play sound. This means that when the first speaker plays sound, the input voltage of the boost unit can be greater than or equal to the operating voltage of the boost unit, which is beneficial to reducing the probability of sound freeze or noise in the sound.

[0031] In the second aspect, an embodiment of the present application provides a chip, which is applied to an electronic device, and the chip is connected to a first speaker in the electronic device; the chip includes: a step-down unit and a first power amplifier unit, and the output end of the step-down unit is connected to the first power amplifier unit; the step-down unit is used to reduce the input voltage of the step-down unit and then output it; the first power amplifier unit is used to drive the first speaker to play sound.

[0032] The chip provided in the embodiment of the present application can provide the first speaker with the power required to play sound, which is conducive to playing sound through the speaker.

[0033] In one possible implementation, the chip also includes a control unit; the control unit is used to set the step-down multiple of the step-down unit according to the voltage of the audio signal, wherein the voltage of the audio signal is inversely correlated with the step-down multiple of the step-down unit, and the audio signal is what the first speaker needs to play.

[0034] In a third aspect, an embodiment of the present application provides a processing method, which is applied to an electronic device, wherein the electronic device includes a battery, a boost unit, a buck unit, a first power amplifier unit and a first speaker; the output end of the battery is connected to the input end of the boost unit, the output end of the boost unit is connected to the input end of the buck unit, and the output end of the buck unit is connected to the first power amplifier unit; the first power amplifier unit is also connected to the first speaker; the positions of the boost unit and the battery are arranged so that the impedance value between the output end of the battery and the input end of the boost unit is less than a first threshold value, and the first threshold value makes the input voltage of the boost unit greater than or equal to the working voltage of the boost unit when the battery supplies power to the first speaker; the boost unit is used to amplify the input voltage of the boost unit and then output it, and the first power amplifier unit is used to drive the first speaker to play sound; the method includes: setting the buck multiple of the buck unit according to the voltage of the audio signal, wherein the voltage of the audio signal is inversely correlated with the buck multiple of the buck unit, and the audio signal is what the first speaker needs to play.

[0035] The amplification factor of the step-down unit can be flexibly adjusted. If the voltage of the audio signal is larger, the volume is louder, and the required power is more, the step-down factor of the step-down unit can be smaller. This enables the output power of the step-down unit to be flexibly adjusted according to the power required by the audio signal, which is beneficial to improving the working efficiency of the first power amplifier unit.

[0036] In a possible implementation, the method further includes: setting an amplification factor of the boost unit according to a voltage of the audio signal, wherein the voltage of the audio signal is positively correlated to the amplification factor of the boost unit.

[0037] The voltage-boosting unit and the voltage-down unit can be changed according to the voltage change of the audio signal, and thus have greater flexibility.

[0038] In a fourth aspect, an embodiment of the present application provides an electronic device, which may also be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. The terminal device may be a mobile phone, a smart TV, a wearable device, a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc.

[0039] The structure of the electronic device may be as shown in any one of the first aspects above, or the electronic device may include a chip as shown in any one of the second aspects above.

[0040] In a fifth aspect, the present application provides an electronic device, including a processor, a memory, a battery, a boost unit, a buck unit, a first power amplifier unit and a first speaker; the output end of the battery is connected to the input end of the boost unit, the output end of the boost unit is connected to the input end of the buck unit, and the output end of the buck unit is connected to the first power amplifier unit; the first power amplifier unit is also connected to the first speaker; the boost unit and the battery are positioned so that the impedance value between the output end of the battery and the input end of the boost unit is less than a first threshold value, and the first threshold value makes the input voltage of the boost unit greater than or equal to the working voltage of the boost unit when the battery powers the first speaker; the boost unit is used to amplify the input voltage of the boost unit and output it; the first power amplifier unit is used to drive the first speaker to play sound; the memory is used to store code instructions, and the processor is used to run the code instructions to implement the method shown in any one of the third aspects.

[0041] In a sixth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program. When the computer program is executed by a processor, the method shown in any one of the third aspects above is implemented.

[0042] In a seventh aspect, an embodiment of the present application provides a computer program product, which includes a computer program. When the computer program is executed, the computer implements the method shown in any one of the third aspects above.

[0043] It should be understood that the fourth to seventh aspects of the present application correspond to the technical solution of the first aspect of the present application, the technical solution of the second aspect of the present application or the technical solution of the third aspect of the present application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation methods are similar and will not be repeated. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a circuit diagram of the operation of a speaker;

[0045] Figure 2 It is a schematic diagram of the hardware structure of an electronic device provided in an embodiment of the present application;

[0046] Figure 3 is a schematic diagram of the hardware structure of another electronic device provided in an embodiment of the present application;

[0047] Figure 4 This is a schematic diagram of the hardware structure of another electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0048] In order to clearly describe the technical solution of the embodiment of the present application, the following description is first made:

[0049] In the embodiments of the present application, words such as "first" and "second" are used to distinguish the same or similar items with basically the same functions and effects. For example, the first speaker and the second speaker are only used to distinguish different speakers, and their order is not limited. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit them to be different.

[0050] It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0051] In the embodiments of the present application, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, a--c, bc, or abc, where a, b, c can be single or multiple.

[0052] It should be noted that the "at..." in the embodiment of the present application can be the instant when a certain situation occurs, or can be a period of time before or after a certain situation occurs, and the embodiment of the present application does not specifically limit this. In addition, the display interface provided in the embodiment of the present application is only an example, and the display interface can also include more or less content.

[0053] When an electronic device such as a tablet or a mobile phone plays sound through a speaker in a low power scenario, for example, 30% power, the sound may freeze or contain noise. The speaker may also be called a loudspeaker.

[0054] The reason why the sound is stuck or the sound includes noise is that when the speaker plays a sound with a higher instantaneous power, the required peak current is larger, and the peak current will cause the impedance in the path where the speaker is located to produce a large voltage. Therefore, when a boost circuit and a power amplifier (PA) are successively arranged between the battery and the speaker, when the battery power is low and the output voltage is low, the working voltage of the boost circuit may not be reached. If the boost circuit does not work, the input voltage of the PA of the speaker will be lower than the minimum value required by the PA, such as 2.7 volts (V), triggering the PA low-power protection, causing the sound to be stuck or the sound to include noise.

[0055] If an electronic device includes multiple speakers, when these multiple speakers are playing sounds with higher instantaneous power, the peak current required by these multiple speakers at a certain moment is very large, which can reach more than ten or twenty amperes, making it more likely that the input voltage of the PA will be lower than the minimum value required by the PA, which is more likely to cause sound freezes or noise in the sound.

[0056] In order to better understand the reasons why the sound is stuck or includes noise, the following Figure 1 Provide detailed explanation.

[0057] Figure 1A circuit diagram of a speaker operation is shown. Figure 1 As shown, the electronic device may include a battery 101, an impedance 102, a power amplifier driving circuit 103 and a speaker 104. The power amplifier driving circuit 103 may include a boost circuit 1031, an impedance 1032 and a power amplifier circuit 1033. The power amplifier circuit 1033 may be understood as the PA of the speaker 104. The boost circuit 1031 and the power amplifier circuit 1033 may be two independent chips or a two-in-one chip, which is not limited in the embodiments of the present application. Impedance 1032 is used to represent the impedance between the output end of the boost circuit 1031 and the input end of the power amplifier circuit 1033. Impedance 102 is used to represent the impedance between the output end of the battery 101 and the input end of the boost circuit 1031.

[0058] Impedance 1032 and impedance 102 may each include different types of impedances. For example, impedance 1032 and impedance 102 may each include one or more of printed circuit board (PCB) trace impedance, connector contact impedance, or series device impedance.

[0059] Among them, the PCB trace impedance is used to represent the impedance generated by the wire between the output end of one device and the input end of another device, for example, the impedance generated by the wire between the output end of the battery 101 and the input end of the boost circuit 1031, and the impedance generated by the wire between the output end of the boost circuit 1031 and the input end of the power amplifier circuit 1033. The connector contact impedance is used to represent the impedance generated by the contact between the wire and the device, for example, the impedance generated by the connection between the wire and the positive electrode of the battery 101. The series device impedance is used to represent the impedance generated by the device (for example, an inductor, a capacitor, or a magnetic bead) between the output end of one device and the input end of another device. For example, if a magnetic bead is connected between the output end of the battery 101 and the input end of the boost circuit 1031, the impedance 102 may include the resistance of the magnetic bead. If an inductor is connected between the output end of the boost circuit 1031 and the input end of the power amplifier circuit 1033, the impedance 1032 may include the resistance of the inductor.

[0060] In some implementations, the impedance value of the impedance 102 may be about 40 milliohms (mohm), and when the boost circuit 1031 and the power amplifier circuit 1033 are a two-in-one chip, the impedance value of the impedance 1032 may be about 2mohm. It is understandable that when the boost circuit 1031 and the power amplifier circuit 1033 are a two-in-one chip, the impedance value of the impedance 1032 is smaller than the impedance value when the boost circuit 1031 and the power amplifier circuit 1033 are independent chips.

[0061] exist Figure 1In the circuit shown, the voltage output by the battery 101 is represented by VBAT, and the range of VBAT can be 3.3 to 4.5V. The output voltage of the boost circuit 1031 is represented by PVDD, and the range of PVDD can be 5 to 12V. The boost circuit 1031 can be a switched capacitor converter (SC) circuit or a Boost circuit, which is used to increase the voltage at the input end and then output it. The power amplifier circuit 1033 can be used to output a pulse width modulation (PWM) waveform to drive the speaker 104 to make a sound. In some implementations, the power amplifier circuit 1033 can be a class D power amplifier circuit. The speaker 104 can include one or more speakers, which is not limited in the embodiments of the present application. In some scenarios, the electronic device can include multiple speakers, and the connection method of these multiple speakers can be parallel.

[0062] When the battery 101 outputs a voltage, a current is generated. The current passes through the impedance 102, and a voltage drop is generated on the impedance 102. The input voltage of the boost circuit 1031 is the output voltage VBAT of the battery 101 minus the voltage drop generated by the impedance 102. The boost circuit 1031 boosts the voltage at the input end and then outputs it. The output voltage PVDD passes through the impedance 1032 to power the power amplifier circuit 1033. The power amplifier circuit 1033 can output a PWM waveform to drive the speaker 104 to produce sound.

[0063] Depend on Figure 1 It can be seen from the circuit shown that, when the peak power of driving the speaker 104 is constant, the output voltage and output current of the boost circuit 1031 are inversely correlated. When the speaker 104 plays a sound with a higher power, the required peak voltage is larger, and the output voltage PVDD of the boost circuit 1031 is higher, for example, when PVDD is 12V, the output current of the boost circuit 1031 is smaller, so the current flowing through the impedance 1032 is smaller, and the resistance of the impedance 1032 is also smaller, so that the voltage drop on the impedance 1032 is very small. Therefore, the voltage drop on the impedance 1032 does not affect the sound of the speaker 104 much.

[0064] When the peak power of driving the speaker 104 is constant, the output voltage and output current of the battery 101 are inversely correlated. When the battery 101 is low in power, the output voltage VBAT is small. For example, when the battery 101 outputs a voltage of 3.4V at low power, the output current of the battery 101 is large, and the resistance of the impedance 102 is large, so that the voltage drop on the impedance 102 is large. In this way, the input voltage of the boost circuit 1031 is small. When the input voltage of the boost circuit 1031 is lower than the working voltage of the boost circuit 1031, the output voltage of the power amplifier circuit 1033 is lower than the required minimum value, which triggers the low power protection of the power amplifier circuit 1033. The power amplifier circuit 1033 does not output voltage, which can be understood as a circuit break, causing the sound to freeze or noise in the sound.

[0065] In some existing implementations, electronic devices can limit the power in audio signals and reduce the probability of playing high-power audio signals to reduce the probability of sound freezes or noise in the sound. This implementation method reduces the playback of high-power audio signals and cannot achieve high dynamic range audio performance, and is achieved at the expense of high dynamic range performance.

[0066] In view of this, the embodiment of the present application provides an electronic device, a processing method and a related device, wherein the impedance value between the battery 101 and the boost circuit 1031 is small, so that when the output power of the battery 101 is constant and the output voltage of the battery 101 is small, although the current is large, due to the small impedance value, a small voltage drop can be generated, which is conducive to reducing the probability that the input voltage of the boost circuit 1031 is lower than the working voltage of the boost circuit 1031, thereby reducing the probability that the input voltage of the power amplifier circuit 1033 is lower than the minimum value required by the power amplifier circuit 1033 unit, thereby reducing the probability of sound freeze or noise in the sound. In addition, the peak power of the speaker can be kept unchanged, and its dynamic range performance can be kept unchanged.

[0067] The electronic device provided in the embodiment of the present application may be a battery-powered device, and may include a single speaker or multiple speakers. For example, the electronic device may be a mobile phone or a tablet. In order to better understand the electronic device provided in the embodiment of the present application, the electronic device provided in the embodiment of the present application is described in detail below.

[0068] Figure 2 FIG. 1 shows a hardware structure diagram of an electronic device provided in an embodiment of the present application. Figure 2As shown, the electronic device includes a battery 201, a boost unit 202, a first power amplifier unit 203 and a first speaker 204; the output end of the battery 201 is connected to the input end of the boost unit 202, the output end of the boost unit 202 is connected to the first power amplifier unit 203, and the first power amplifier unit 203 is also connected to the first speaker 204; the boost unit 202 and the battery 201 are positioned so that the impedance value between the output end of the battery 201 and the input end of the boost unit 202 is less than or equal to a first threshold value, and the first threshold value makes the input voltage of the boost unit 202 greater than or equal to the working voltage of the boost unit 202; the boost unit 202 is used to amplify the input voltage of the boost unit 202 and output it; the first power amplifier unit 203 is used to drive the first speaker 204 to play sound.

[0069] The battery 201 can refer to the above Figure 1 The battery 101 shown in the figure, the boost unit 202 can refer to the boost circuit 103 mentioned above, and the first power amplifier unit 203 can refer to the above Figure 1 The power amplifier circuit 105 and the first speaker 204 shown may refer to the above-mentioned speaker 106 .

[0070] The boost unit 202 may be referred to as an SC boost circuit. In some implementations, the boost unit 202 may be a high-efficiency charge pump boost circuit. For example, the conversion efficiency of the boost unit 202 is greater than or equal to 95%. In this way, the conversion efficiency may be improved and the power consumption may be reduced. The boost unit 202 may be implemented by an integrated chip or a charge pump boost circuit constructed by separate components, which is not limited in the embodiments of the present application.

[0071] The amplification factor of the boost unit 202 may be fixed or flexibly selected, and this embodiment of the present application does not limit this.

[0072] In some examples, the amplification factor of the boost unit 202 may be fixed. For example, the boost ratio of the boost unit 202 is one of 1:2, 1:3, or 1:4. In this way, the implementation is simple.

[0073] In other examples, the amplification factor of the boost unit 202 can be flexibly selected. For example, when the power required for the first speaker 204 to play the sound is small, the amplification factor of the boost unit 202 can be 1:2. When the power required for the first speaker 204 to play the sound is large, the amplification factor of the boost unit 202 can be 1:4. In this way, the flexibility is stronger, which is conducive to reducing the probability of power consumption waste.

[0074] The boost unit 202 may be located close to the battery 201 to minimize the impedance between the output of the battery 201 and the input of the boost unit 202, thereby making the impedance between the output of the battery 201 and the input of the boost unit 202 less than a first threshold. In one example, the first threshold may be 2 mohm.

[0075] The embodiment of the present application may not limit the position of the boost unit 202 and the position of the first power amplifier unit 203. Because the boost unit 202 has a boosting function, it can output a larger voltage, and under a certain output power, it can generate a smaller current. Even if the impedance value between the output end of the boost unit 202 and the input end of the first power amplifier unit 203 is large, such as 40mohm, 42mohm or 45mohm, a smaller voltage drop can be generated, and this voltage drop does not have much effect on the sound played by the first speaker 204.

[0076] In the electronic device provided by the embodiment of the present application, the positions of the boost unit 202 and the battery 201 are arranged so that the impedance value between the output end of the battery 201 and the input end of the boost unit 202 is less than the first threshold value, which can indicate that the impedance value between the output end of the battery 201 and the input end of the boost unit 202 is small. In this way, when the output voltage of the battery 201 is small, even if a large power needs to be output and a large current is generated, the voltage drop of the impedance between the output end of the battery 201 and the input end of the boost unit 202 is also small, which can make the input voltage of the boost unit 202 greater than or equal to the working voltage of the boost unit 202, which is conducive to reducing the probability of sound jamming or noise in the sound due to the inability of the boost unit 202 to work. In addition, this can avoid reducing the peak power of the speaker and can avoid sacrificing its dynamic range performance.

[0077] Optionally, the first threshold value makes the input voltage of the boost unit greater than or equal to the operating voltage of the boost unit when the output voltage of the battery is the minimum supply voltage; or, the first threshold value makes the input voltage of the boost unit greater than or equal to the operating voltage of the boost unit when the difference between the output voltage of the battery and the minimum supply voltage is less than the second threshold value; or, the first threshold value makes the input voltage of the boost unit greater than or equal to the operating voltage of the boost unit when the output voltage of the battery is the minimum voltage required to support the first speaker to play sound.

[0078] The present application also provides an electronic device. Figure 3 FIG. 1 shows a hardware structure diagram of an electronic device provided in an embodiment of the present application. Figure 3As shown, the electronic device includes: a battery 201, R1, a boost unit 202, R3, a speaker power amplifier driving circuit 301 and a first speaker 204. The speaker power amplifier driving circuit 301 includes: a buck and bypass circuit 3011, R2 and a first power amplifier unit 203. The direction of the current is from the output end of the battery 201 to the first speaker 204 through the boost unit 202, the buck and bypass circuit 3011 and the first power amplifier unit 203. The output voltage of the battery 201 can be represented by VBAT, the output voltage of the boost unit 202 can be represented by HVDD, and the output voltage of the buck and bypass circuit 3011 can be represented by PVDD.

[0079] R1 is the impedance between the output end of the battery 201 and the input end of the boost unit 202, and the impedance value of R1 is less than the first threshold value, for example, R1≤2mohm. R3 is the impedance between the output end of the boost unit 202 and the input end of the buck and bypass circuit 3011, for example, R3=40mohm. R2 is the impedance between the output end of the buck and bypass circuit 3011 and the input end of the first power amplifier unit 203. The buck and bypass circuit 3011 and the first power amplifier unit 203 can be two independent chips or a two-in-one chip, which is not limited in the embodiment of the present application. When the buck and bypass circuit 3011 and the first power amplifier unit 203 are two-in-one chips, R2 can be approximately 2mohm.

[0080] The buck and bypass circuit 3011 can work in a buck mode or a bypass mode. When the buck and bypass circuit 3011 is in the buck mode, it can be used to output the input voltage after bucking. In this case, the buck and bypass circuit 3011 can be called a bypass unit. When the buck and bypass circuit 3011 is in the bypass mode, it can directly output the input voltage. In this case, the buck and bypass circuit 3011 can be called a buck unit. The boost unit 202 and the first power amplifier unit 203 can refer to the above Figure 2 The functions shown are not described here in detail.

[0081] The electronic device also includes a control unit, which can control the working mode of the step-down and bypass circuit 3011 according to the voltage value of the audio signal to be played by the first speaker 204. It can be understood that the audio signal is an electrical signal. If the electrical signal is an analog signal, the voltage value of the audio signal changes with the amplitude of the audio signal. If the electrical signal is a digital signal, the voltage value of the audio signal changes with the binary value of the audio signal. The larger the voltage value of the audio signal, the louder the sound volume and the higher the power required. Among them, the control unit can be in the same chip as the step-down and bypass circuit 3011, or in a different chip, which is not limited in the embodiment of the present application. The control unit can be a central processing unit (CPU), a system on a chip (SOC), a power management integrated circuit (PMIC) or a power management unit, etc., which is not limited in the embodiment of the present application.

[0082] When the first speaker needs to play sound, the battery 201 can output voltage, and there are many possible implementations of the working modes of the boost unit 202 and the buck and bypass circuit 3011.

[0083] In a possible implementation, the amplification factor of the boost unit 202 is fixed and relatively large, which can meet the requirement of a relatively large power of the audio signal. The buck and bypass circuit 3011 can operate in a buck mode, or in a bypass mode.

[0084] Exemplarily, the electronic device may be preset with a first voltage range and a second voltage range, and the voltage in the first voltage range may be greater than the voltage in the second voltage range. If the control unit detects that the voltage of the audio signal is in the first voltage range, the buck and bypass circuit 3011 may be controlled to operate in the bypass mode. If the control unit detects that the voltage of the audio signal is in the second voltage range, the buck and bypass circuit 3011 may be controlled to operate in the buck mode.

[0085] If the voltage of the audio signal is within the first voltage range, it can be said that the voltage value of the audio signal is large, the volume of the sound is large, and the required power is high. The buck and bypass circuit 3011 can work in the bypass mode without bucking the input voltage, so that the voltage HVDD boosted by the boost unit 202 is equal to the voltage PVDD output by the buck and bypass circuit 3011. In this way, a loud audio signal can be played, which is conducive to obtaining a higher dynamic range performance of the speaker.

[0086] If the voltage of the audio signal is within the second voltage range, it can be explained that the voltage value of the audio signal is small, the volume of the sound is small, the required power is low, and the power output by the boost unit 202 is much greater than the power required by the audio signal. The buck and bypass circuit 3011 can work in the buck mode to buck the input voltage so that the power output by the buck and bypass circuit 3011 can meet the power required by the audio signal without causing power consumption waste. In this way, it is beneficial to reduce the power consumption of the electronic device and achieve higher working efficiency.

[0087] In some implementations, the second voltage range may include one or more voltage ranges, and each voltage range may correspond to a voltage reduction multiple. The control unit may set the voltage reduction multiple of the voltage reduction and bypass circuit 3011 to the voltage reduction multiple corresponding to the voltage range where the voltage value of the audio signal is located, according to the voltage range where the voltage value of the audio signal is located. It is understandable that the smaller the voltage value in the voltage range, the greater the voltage reduction multiple may be.

[0088] In this implementation, the voltage output by the boost unit 202 is relatively large, for example, it may be much larger than 3V, so the boost unit 202 may be connected to the speaker amplifier driving circuits of multiple speakers.

[0089] For example, Figure 4 FIG. 1 shows a schematic diagram of an electronic device including a plurality of speakers. Figure 4 As shown, the electronic device includes a first speaker 204 and a second speaker 402. The output end of the boost unit 202 is connected to the speaker power amplifier driving circuit 301 and the speaker power amplifier driving circuit 401 respectively, and the speaker power amplifier driving circuit 401 is connected to the second speaker 402. The speaker power amplifier driving circuit 401 includes a step-down and bypass voltage 4011 and a second power amplifier unit 4012, R4 is the impedance between the output end of the step-down and bypass voltage 4011 and the input end of the second power amplifier unit 4012, and R5 is the impedance between the output end of the boost unit 202 and the input end of the step-down and bypass circuit 4011. The connection relationship between other devices is the same as above. Figure 3 The same is not repeated here.

[0090] The impedance value of R4 may be the same as or different from the impedance value of R2, which is not limited in the present embodiment. The impedance value of R5 may be the same as or different from the impedance value of R3, which is not limited in the present embodiment. The function of the step-down and bypass voltage 4011 is similar to that of the step-down and bypass voltage 3011, and the function of the second power amplifier unit 4012 is similar to that of the first power amplifier unit 203, which will not be described in detail here.

[0091] In this way, the boost unit 202 is connected to the speaker amplifier driving circuits of multiple speakers. Since the voltage output by the boost unit 202 is large and the current flowing through R5 and R3 is small, the connecting wires used between the boost unit 202 and the speaker amplifier driving circuits of multiple speakers can be thinner, which is beneficial to saving wiring space.

[0092] In another possible implementation, the gain of the boost unit 202 can be flexibly adjusted, and the buck and bypass circuit 3011 can operate in a bypass mode.

[0093] Exemplarily, the boost ratio of the boost unit 202 supports multiple of 1:2, 1:3 or 1:4. The electronic device may be preset with a first voltage range, a second voltage range and a third voltage range, the voltage in the first voltage range may be greater than the voltage in the second voltage range, and the voltage in the second voltage range may be greater than the voltage in the third voltage range. If the control unit detects that the voltage of the audio signal is in the first voltage range, the boost ratio of the boost unit 202 may be controlled to be 1:4. If the control unit detects that the voltage of the audio signal is in the second voltage range, the boost ratio of the boost unit 202 may be controlled to be 1:3. If the control unit detects that the voltage of the audio signal is in the third voltage range, the boost ratio of the boost unit 202 may be controlled to be 1:2.

[0094] Thus, with the above Figure 2 The functions shown are the same and will not be described again here.

[0095] The boost unit 202 can be in the same chip as the control unit, and can have an "adaptive boost" function, that is, the amplification factor can be adjusted according to the voltage of the audio signal. In some examples, after the control unit obtains the audio signal, if there is a signal with high instantaneous power due to a sudden high volume in the audio signal, the control unit detects that the voltage value of the audio signal is high, and the boost unit 202 can amplify the voltage at the input end and output it through a larger amplification factor, so that the first speaker 204 obtains a larger dynamic range and brings a better audio experience to the user. If there is a signal with small or medium power in the audio signal, the control unit detects that the voltage value of the audio signal is low, and the boost unit 202 can amplify the voltage at the input end and output it through a smaller amplification factor, which is beneficial to improve the working efficiency of the first power amplifier unit 203 and optimize the battery life of the electronic device.

[0096] For example, if the audio signal has a medium power signal, the voltage of the audio signal is in the third voltage range, and the boost unit 202 can amplify the voltage of the input end to 7V for output. If the audio signal has a signal between a medium power signal and a high power signal, the voltage of the audio signal is in the second voltage range, and the boost unit 202 can amplify the voltage of the input end to 9V for output. If the audio signal has a high power signal, the voltage of the audio signal is in the first voltage range, and the boost unit 202 can amplify the voltage of the input end to 12V for output.

[0097] In yet another possible implementation, the gain of the boost unit 202 can be flexibly adjusted, and the buck and bypass circuit 3011 can operate in a buck mode, or in a bypass mode.

[0098] Exemplarily, the electronic device may be preset with a first voltage range, a second voltage range, and a third voltage range, the voltage in the first voltage range may be greater than the voltage in the second voltage range, and the voltage in the second voltage range may be greater than the voltage in the third voltage range. If the control unit detects that the voltage of the audio signal is in the first voltage range, the boost ratio of the boost unit 202 may be controlled to be 1:4, and the buck and bypass circuit 3011 may be controlled to operate in the bypass mode. If the control unit detects that the voltage of the audio signal is in the second voltage range, the boost ratio of the boost unit 202 may be controlled to be 1:3, and the buck and bypass circuit 3011 may be controlled to operate in the buck mode, and the buck multiple is the first value. If the control unit detects that the voltage of the audio signal is in the third voltage range, the boost ratio of the boost unit 202 may be controlled to be 1:2, and the buck and bypass circuit 3011 may be controlled to operate in the buck mode, and the buck multiple is the second value. The first values ​​may be the same or different, and the embodiment of the present application is not limited to this.

[0099] In this way, by controlling the working modes of the boost unit 202 and the buck and bypass circuit 3011, the output power can meet the requirements of the audio signal, which is beneficial to reducing power consumption and improving work efficiency. In addition, the boost unit 202 can adjust the amplification factor so that the buck multiple of the buck and bypass circuit 3011 can be smaller, which is beneficial to reducing the cost of the buck and bypass circuit 3011.

[0100] Optionally, the above Figure 3 The electronic device shown may further include a first switch unit, which is connected in parallel with the boost unit 202. When the first switch unit is turned on, the boost unit 202 is short-circuited. When the first switch unit is turned off, the boost unit can work.

[0101] Exemplarily, when the output power of the battery 201 is greater than the power required by the audio signal, the first switch unit may be turned on, and the buck and bypass circuit 3011 may operate in the bypass mode.

[0102] The present application also provides an electronic device. Figure 3 Compared with the electronic device shown in the figure, the buck and bypass circuit 3011 can be replaced by a boost and bypass circuit, or by a circuit that can support a boost mode, a buck mode, and a bypass mode.

[0103] If the step-down and bypass circuit 3011 is replaced by a step-up and bypass circuit, the step-up unit 202 and the step-up and bypass circuit can provide the first speaker 204 with the power required to play the audio signal. In this case, the electronic device may include multiple possible implementations.

[0104] In a possible implementation, the amplification factor of the boost unit 202 is fixed, and when a larger power needs to be output, the boost and bypass circuit can work in a boost mode. When a smaller power needs to be output, the boost and bypass circuit can work in a bypass mode. In this way, the implementation is simple.

[0105] In another possible implementation, the gain of the boost unit 202 can be flexibly adjusted. When a larger power needs to be output, the boost and bypass circuit can work in the boost mode, and the gain of the boost unit 202 can be larger. When a smaller power needs to be output, the boost and bypass circuit can work in the bypass mode, and the gain of the boost unit 202 can be smaller. This provides greater flexibility.

[0106] If the buck and bypass circuit 3011 is replaced with a circuit supporting the boost mode, the buck mode and the bypass mode, the boost unit 202 and the circuit supporting the boost mode, the buck mode and the bypass mode can provide the first speaker 204 with the power required to play the audio signal. In this case, the electronic device may include multiple possible implementations.

[0107] In a possible implementation, the amplification factor of the boost unit 202 is fixed. When a larger power needs to be output, the circuit supporting the boost mode, buck mode and bypass mode can operate in the boost mode. When a smaller power needs to be output, the circuit supporting the boost mode, buck mode and bypass mode can operate in the buck mode or bypass mode. Alternatively, when a larger power needs to be output, the circuit supporting the boost mode, buck mode and bypass mode can operate in the boost mode or bypass mode. When a smaller power needs to be output, the circuit supporting the boost mode, buck mode and bypass mode can operate in the buck mode.

[0108] In another possible implementation, the amplification factor of the boost unit 202 can be flexibly adjusted. When a larger power needs to be output, the amplification factor of the boost unit 202 can be larger, and the circuit supporting the boost mode, the buck mode, and the bypass mode can operate in the boost mode, the bypass mode, or the buck mode. When a smaller power needs to be output, the amplification factor of the boost unit 202 can be smaller, and the circuit supporting the boost mode, the buck mode, and the bypass mode can operate in the boost mode, the bypass mode, or the buck mode.

[0109] Compared with existing electronic devices, the electronic device provided by the embodiment of the present application is conducive to reducing the probability of power supply stability problems caused by too low input voltage of the power amplifier circuit of the speaker when the battery is low, and is also conducive to reducing the heat loss of current path impedance. In order to illustrate the effect that the electronic device provided by the embodiment of the present application can provide, the embodiment of the present application is simulated.

[0110] For example, the electronic device provided in the embodiment of the present application is Figure 3 The electronic device shown in the figure is used as an example for explanation. Figure 1 The electronic device shown is used as an example for explanation.

[0111] Table 1 shows the differences between the electronic device provided in the embodiment of the present application and the existing electronic device. For ease of description, 1 is used in Table 1 to represent the existing electronic device, and 2 is used to represent the electronic device provided in the embodiment of the present application.

[0112] Table 1

[0113]

[0114] As shown in Table 1, in the existing electronic equipment, the output voltage VBAT of the battery 101 is 3.3V, the output voltage PVDD of the boost circuit 103 is 12V, the impedance of the speaker 106 is 8ohm, the efficiency of the power amplifier driving circuit 103 is 85%, the theoretical input current peak value of the power amplifier driving circuit 103 is 7.01 (A), the resistance value of the impedance 102 is 40ohm, the current of the impedance 102 is 7.01A, and the voltage drop of the impedance 102 is 0.2804V. Among them, the theoretical input current peak value of the power amplifier driving circuit 103 satisfies the following formula: the square of PVDD divided by the impedance of the speaker is equal to the input voltage of the power amplifier driving circuit 103 multiplied by the input current peak value of the power amplifier driving circuit 103 multiplied by the efficiency of the power amplifier driving circuit 103.

[0115] In the electronic device provided in the embodiment of the present application, the output voltage VBAT of the battery 201 is 3.3V, the output voltage PVDD of the boost unit 202 is 12V, the output voltage HVDD of the step-down and bypass circuit 3011 is 6.6V, the impedance of the first speaker 204 is 8ohm, the efficiency of the theoretical speaker amplifier driving circuit 301 is 85%, the input current peak value of the theoretical speaker amplifier driving circuit 301 is 3.27A, the SC efficiency, that is, the efficiency of the boost unit 202 is 95%, the resistance value of R1 is 2ohm, the current of R1 is 6.88A, and the voltage drop of R1 is 0.0138V, the resistance value of R3 is 40ohm, the current of R3 is 3.27A, and the voltage drop of R3 is 0.0138V.

[0116] It is understandable that in the electronic device provided in the embodiment of the present application, the buck and bypass circuit 3011 works in buck mode, and the buck multiple is 6.6 / 12=0.55. The positions of the battery 201 and the boost unit 202 are set so that the resistance of R1 is 2ohm, which is much smaller than the resistance of the impedance 102, so that the voltage drop of R1 is small.

[0117] In this scenario, the input voltage and current path impedance heat dissipation of the power amplifier driving circuit can be shown in Table 2.

[0118] Table 2

[0119]

[0120] As shown in Table 2, in existing electronic devices, when the output voltage VBAT of the battery 101 is 3.3V, the input voltage of the power amplifier driving circuit 103 is 3.3-0.2804=3.0196V, and the path heat dissipation is the impedance generated by the impedance 102: 7.01*0.2804, which is about 1.9656W.

[0121] In the electronic device provided in the embodiment of the present application, when the output voltage VBAT of the battery 101 is 3.3V, the input voltage of the speaker amplifier driving circuit 301 is 6.6-0.1308=6.4692V, and the path heat dissipation is the impedance generated by R1 and R3: 6.88*0.0138+3.27*0.1308, which is approximately 0.5225W, and the SC heat dissipation is 1.1359W.

[0122] It is understandable that 6.4V is much greater than 3.0196V, and the electronic device provided by the embodiment of the present application is conducive to reducing the probability of power supply stability problems caused by low voltage when the battery is low. 0.5225W is much less than 1.9656W, and the electronic device provided by the embodiment of the present application is conducive to reducing the heat consumption of the current path impedance.

[0123] The present application embodiment also provides a computer program product including one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network or other programmable device. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a server or data center that includes one or more available media integrated. For example, the available medium may include a magnetic medium (e.g., a floppy disk, a hard disk or a tape), an optical medium (e.g., a digital versatile disc (DVD)), or a semiconductor medium (e.g., a solid state disk (SSD)), etc.

[0124] The present application also provides a computer-readable storage medium. The methods described in the above embodiments can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. Computer-readable media may include computer storage media and communication media, and may also include any medium that can transfer a computer program from one place to another. The storage medium may be any target medium that can be accessed by a computer.

[0125] As a possible design, the computer readable medium may include a compact disc read-only memory (CD-ROM), RAM, ROM, EEPROM or other optical disc storage; the computer readable medium may include a magnetic disk storage or other magnetic disk storage device. Moreover, any connection line may also be appropriately referred to as a computer readable medium. For example, if the software is transmitted from a website, server or other remote source using a coaxial cable, fiber optic cable, twisted pair, DSL or wireless technology (such as infrared, radio and microwave), the coaxial cable, fiber optic cable, twisted pair, DSL or wireless technology such as infrared, radio and microwave are included in the definition of medium. Disk and disc as used herein include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, where disks usually reproduce data magnetically, while optical discs reproduce data optically using lasers.

[0126] The embodiments of the present application are described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processing unit of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processing unit of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

Claims

1. An electronic device, characterized in that: include: A battery, a boost unit, a first power amplifier unit and a first speaker; the output end of the battery is connected to the input end of the boost unit, the output end of the boost unit is connected to the first power amplifier unit, and the first power amplifier unit is also connected to the first speaker; the boost unit and the battery are positioned so that the impedance value between the output end of the battery and the input end of the boost unit is less than or equal to a first threshold value, and the first threshold value makes the input voltage of the boost unit greater than or equal to the working voltage of the boost unit when the battery supplies power to the first speaker; The boost unit is used to amplify the input voltage of the boost unit and then output it; The first power amplifier unit is used to drive the first speaker to play sound.

2. The electronic device according to claim 1, characterized in that: The electronic device further comprises a first unit, the first unit is connected to the boost unit, and the first unit is also connected to the first power amplifier unit; The first unit is used to supply power to the first power amplifier unit so that the power output by the first power amplifier unit is greater than or equal to the power required by the first speaker to play sound.

3. The electronic device according to claim 2, characterized in that: The electronic device further comprises a control unit; The control unit is used to set the first unit as a bypass unit when the voltage of the audio signal is within a first preset voltage range; or to set the first unit as a step-down unit when the voltage of the audio signal is within a second preset voltage range; wherein the voltage value within the first preset voltage range is greater than the voltage value within the second preset voltage range, and the audio signal is what the first speaker needs to play.

4. The electronic device according to claim 3, characterized in that: The control unit is further used to: when the voltage of the audio signal is within the second preset voltage range, set the step-down multiple of the step-down unit according to the voltage of the audio signal, wherein the voltage of the audio signal is inversely correlated with the step-down multiple of the step-down unit.

5. The electronic device according to claim 3 or 4, characterized in that: The control unit is further configured to reduce the amplification factor of the boost unit when the voltage of the audio signal is within the second preset voltage range.

6. The electronic device according to any one of claims 1 to 4, characterized in that: The electronic device further comprises a control unit; The control unit is used to set the amplification factor of the boost unit according to the voltage of the audio signal, wherein the voltage of the audio signal is positively correlated with the amplification factor of the boost unit, and the audio signal is what the first speaker needs to play.

7. The electronic device according to any one of claims 1 to 4, characterized in that: The electronic device further comprises a first switch unit, wherein the first switch unit is connected in parallel with the boost unit; The first switch unit is used to close when the output power of the battery can provide the power required by the first speaker to play sound.

8. The electronic device according to any one of claims 1 to 4, characterized in that: The electronic device further comprises a second power amplifier unit and a second speaker; the output end of the boost unit is further connected to the second power amplifier unit, and the second power amplifier unit is further connected to the second speaker.

9. The electronic device according to any one of claims 1 to 4, characterized in that: The first threshold value is such that when the output voltage of the battery is the minimum supply voltage, the input voltage of the boost unit is greater than or equal to the working voltage of the boost unit; or, The first threshold is such that when the difference between the output voltage of the battery and the minimum supply voltage is less than the second threshold, the input voltage of the boost unit is greater than or equal to the working voltage of the boost unit; or The first threshold value ensures that when the output voltage of the battery is the minimum voltage required to support the first speaker to play sound, the input voltage of the boost unit is greater than or equal to the working voltage of the boost unit.

10. A chip, characterized in that: The chip is applied to an electronic device, and the chip is connected to a first speaker in the electronic device; the chip comprises: a step-down unit and a first power amplifier unit, and the output end of the step-down unit is connected to the first power amplifier unit; The step-down unit is used to reduce the input voltage of the step-down unit and then output it; The first power amplifier unit is used to drive the first speaker to play sound; The input end of the step-down unit is connected to the output end of the boost unit in the electronic device, and the positions of the boost unit and the battery of the electronic device are arranged so that the impedance value between the output end of the battery and the input end of the boost unit is less than a first threshold value. The first threshold value makes the input voltage of the boost unit greater than or equal to the working voltage of the boost unit when the battery supplies power to the first speaker, and the output end of the battery is connected to the input end of the boost unit.

11. The chip according to claim 10, characterized in that: The chip also includes a control unit; The control unit is used to set the step-down multiple of the step-down unit according to the voltage of the audio signal, wherein the voltage of the audio signal is inversely correlated with the step-down multiple of the step-down unit, and the audio signal is what the first speaker needs to play.

12. A processing method, characterized in that: Applied to an electronic device, the electronic device comprises a battery, a boost unit, a buck unit, a first power amplifier unit and a first speaker; the output end of the battery is connected to the input end of the boost unit, the output end of the boost unit is connected to the input end of the buck unit, and the output end of the buck unit is connected to the first power amplifier unit; the first power amplifier unit is also connected to the first speaker; the boost unit and the battery are positioned so that the impedance value between the output end of the battery and the input end of the boost unit is less than a first threshold value, and the first threshold value makes the input voltage of the boost unit greater than or equal to the working voltage of the boost unit when the battery supplies power to the first speaker; The boost unit is used to amplify the input voltage of the boost unit and then output it, and the first power amplifier unit is used to drive the first speaker to play sound; The method comprises: The step-down multiple of the step-down unit is set according to the voltage of the audio signal, wherein the voltage of the audio signal is inversely correlated with the step-down multiple of the step-down unit, and the audio signal is required to be played by the first speaker.

13. The method according to claim 12, characterized in that The method further comprises: The amplification factor of the boost unit is set according to the voltage of the audio signal, wherein the voltage of the audio signal is positively correlated with the amplification factor of the boost unit.

14. An electronic device, characterized in that: include: A processor, a memory, a battery, a boost unit, a buck unit, a first power amplifier unit and a first speaker; the output end of the battery is connected to the input end of the boost unit, the output end of the boost unit is connected to the input end of the buck unit, and the output end of the buck unit is connected to the first power amplifier unit; the first power amplifier unit is also connected to the first speaker; the boost unit and the battery are positioned so that the impedance value between the output end of the battery and the input end of the boost unit is less than a first threshold value, and the first threshold value makes the input voltage of the boost unit greater than or equal to the working voltage of the boost unit when the battery supplies power to the first speaker; The boost unit is used to amplify the input voltage of the boost unit and then output it; The first power amplifier unit is used to drive the first speaker to play sound; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the electronic device performs the method according to claim 12 or 13.

15. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method according to claim 12 or 13 is implemented.

16. A computer program product, characterized in that It comprises a computer program which, when being executed, causes a computer to execute the method as claimed in claim 12 or 13.

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