Efficient intelligent control POP sound optimization system of portable high-power sound equipment

Abstract

The utility model discloses an efficient intelligent control POP sound optimization system of a portable high-power sound box. The intelligent control POP sound optimization system comprises a power supply module used for providing a power supply, and an MCU master control module, a digital-to-analog conversion module, a power amplifier module, a POP sound suppression circuit and an audio signal acquisition module which are connected with the power supply module. The MCU main control module is connected with the digital-to-analog conversion module and the power amplifier module, and is used for receiving a trigger signal for obtaining the starting, closing or switching mode of the sound equipment through a preset button to obtain a first control signal; the control module is used for controlling MUTE mute pins of the digital-to-analog conversion module and the power amplifier module according to the first control signal so as to eliminate POP sound generated when the sound equipment is started, closed or switched; and the POP sound suppression circuit is connected with the digital-to-analog conversion module and the power amplifier module, and is used for acquiring a second control signal when the power supply module is accidentally powered off and controlling MUTE mute pins of the digital-to-analog conversion module and the power amplifier module according to the second control signal so as to eliminate POP sound generated at the loudspeaker end of the sound equipment when the power supply module is accidentally powered off.

Description

Technical Field

[0001] The utility model relates to the technical field of audio equipment, and in particular to a high-efficiency intelligent control POP sound optimization system for a portable high-power audio system. Background Art

[0002] With the improvement of people's living standards, audio has become an important part of people's social entertainment, and the need to sing, practice singing and listen to music has gradually become one of the needs of the family.

[0003] Most of the existing audio equipment uses a single-ended configuration for the power amplifier output, that is, only one output is used to drive the load. The disadvantage of this method is that the power amplifier has certain limitations in terms of power output, thermal efficiency, manufacturing process, and anti-interference ability. As a result, when the current high-power audio is started / turned off / switched mode / power is accidentally cut off, POP sound will suddenly appear at the speaker end of the audio, affecting the user experience. Most of the traditional POP noise suppression technologies use external capacitors, or add simple timing control circuits to the chip to delay the switch input. If the filter capacitor is too large, the chip's settling time will be longer, making people feel that the sound has not been output for a "long time", and it will also deteriorate the important indicator of the audio system - total harmonic distortion + noise (THD+N). Summary of the invention

[0004] The utility model provides a high-efficiency intelligent control POP sound optimization system for a portable high-power audio system to overcome the above technical problems.

[0005] In order to achieve the above purpose, the technical solution of the utility model is:

[0006] An efficient intelligent control POP sound optimization system for a portable high-power audio system, the intelligent control POP sound optimization system is used to eliminate the POP sound generated when the audio system is started / shutdown / switched mode / power supply is abnormal, and the intelligent control POP sound optimization system includes a power module for providing power and an MCU main control module connected to the power module, a digital-to-analog conversion module, a power amplifier module, a POP sound suppression circuit, and an audio signal acquisition module;

[0007] The audio signal acquisition module is used to collect the audio digital input signal to be played by the audio system;

[0008] The digital-to-analog conversion module is used to perform digital-to-analog conversion on the audio digital input signal to obtain an audio analog signal and transmit it to the power amplifier module;

[0009] The power amplifier module is used to amplify the received audio analog signal to obtain an audio power amplifier signal, and play the audio power amplifier signal through a speaker;

[0010] The MCU main control module is connected to the digital-to-analog conversion module and the power amplifier module respectively, and is used to receive the trigger signal of the button when the sound is started, turned off or switched mode as the first control signal, and control the MUTE mute pins of the digital-to-analog conversion module and the power amplifier module according to the first control signal to eliminate the POP sound generated when the sound is started, turned off or switched mode;

[0011] The POP sound suppression circuit is respectively connected to the digital-to-analog conversion module and the power amplifier module, and is used to obtain a second control signal, i.e., a power-off detection signal, when the power module is accidentally powered off, and control the MUTE pins of the digital-to-analog conversion module and the power amplifier module according to the second control signal to eliminate the POP sound generated at the audio speaker end when the power module is accidentally powered off.

[0012] Furthermore, the audio signal acquisition module includes an analog-to-digital conversion module, a DSP module and an acquisition module;

[0013] The analog-to-digital conversion module is connected to the DSP module, and the analog-to-digital conversion module is used to perform analog-to-digital conversion on the audio analog signal to be transmitted acquired by the acquisition module;

[0014] The DSP module is used to perform noise reduction processing on the audio analog signal to be transmitted after analog-to-digital conversion, and transmit it to the digital-to-analog conversion module to obtain the audio digital input signal.

[0015] Further, the POP sound suppression circuit includes a first transistor Q1, a second transistor Q2 and a third transistor Q3;

[0016] The base of the first transistor Q1 is connected to one end of the second resistor R2, the other end of the second resistor R2 is connected to one end of the first resistor R1 and one end of the first diode D1, the other end of the first resistor R1 is connected to the output end DC_IN of the power module, the other end of the first diode D1 is connected to one end of the third resistor R3 and one end of the first capacitor C1, and the other end of the first capacitor C1 is grounded, the other end of the third resistor R3 is connected to one end of the fourth resistor R4 and the emitter of the first transistor Q1, and the other end of the fourth resistor R4 is grounded;

[0017] The collector of the first transistor Q1 is connected to one end of the fifth resistor R5, one end of the sixth resistor R6 and one end of the seventh resistor R7, the other end of the fifth resistor R5 is grounded, the other end of the seventh resistor R7 is connected to the base of the second transistor Q2, the collector of the second transistor Q2 is connected to the MUTE mute pin of the digital-to-analog conversion module, and the emitter of the second transistor Q2 is grounded; the other end of the sixth resistor R6 is connected to the second diode D2, one end of the second capacitor C2 and one end of the eighth resistor R8, the other end of the second diode D2 is connected to the MUTE mute pin of the MCU main control module, and the other end of the second capacitor C2 is grounded;

[0018] The other end of the eighth resistor R8 is connected to the base of the third transistor Q3, and the collector of the third transistor Q3 is connected to the MUTE pin of the power amplifier module, and the emitter of the third transistor Q3 is grounded.

[0019] Furthermore, the first transistor Q1 is a PNP transistor, and the second transistor Q2 and the third transistor Q3 are NPN transistors.

[0020] Furthermore, the first capacitor C1 adopts an RVT aluminum electrolytic capacitor, and the second capacitor C2 adopts an MLCC ceramic capacitor.

[0021] Furthermore, the chip model of the MCU main control module is APM32F030RCT6.

[0022] The DSP module adopts Stream1832A-44G, the chip model of the analog-to-digital conversion module adopts AD12250A-SG / TR, the chip model of the digital-to-analog conversion module adopts PCM1690DCAR, and the chip model of the power amplifier module adopts TPA3220DDWR.

[0023] Beneficial effect: The utility model provides a high-efficiency intelligent control POP sound optimization system for a portable high-power audio system. The MCU main control module receives a trigger signal for starting, shutting down or switching modes of the audio system through a preset button to obtain a first control signal, and controls the MUTE pins of the digital-to-analog conversion module and the power amplifier module according to the first control signal, thereby ensuring the elimination of the POP sound generated when the audio system is started, shut down or switched modes. Based on the POP sound suppression circuit, the MUTE pins of the digital / analog conversion module and the power amplifier module are controlled to eliminate the POP sound generated at the speaker end of the audio system when the power module is accidentally powered off. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 This is a schematic diagram of the efficient intelligent control POP sound optimization system of the portable high-power speaker of the utility model;

[0026] Figure 2 : is a circuit schematic diagram of the POP sound suppression circuit in this embodiment;

[0027] Figure 3 is a schematic diagram of an audio signal acquisition module in this embodiment;

[0028] Figure 4 is a block diagram of the PBTL mode in this embodiment;

[0029] Figure 5 This is a flow chart of clearing the DMA buffer and eliminating noise in this embodiment. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] This embodiment provides an efficient intelligent control POP sound optimization system for a portable high-power speaker, the intelligent control POP sound optimization system is used to eliminate the POP sound generated when the speaker is started / turned off / switched mode / power supply is abnormal, such as Figure 1 As shown, the intelligent control POP sound optimization system includes a power module for providing power and an MCU main control module, a digital-to-analog conversion module, a power amplifier module, a POP sound suppression circuit and an audio signal acquisition module connected to the power module; wherein the chip model of the MCU main control module is APM32F030RCT6, the chip model of the digital-to-analog conversion module is PCM1690DCAR, and the chip model of the power amplifier module is TPA3220DDWR;

[0032] The audio signal acquisition module is used to collect the audio digital input signal to be played by the audio system;

[0033] Specifically, Figure 3 As shown, the audio signal acquisition module includes an analog-to-digital conversion module, a DSP module and an acquisition module; the analog-to-digital conversion module is connected to the DSP module, and the analog-to-digital conversion module is used to perform analog-to-digital conversion on the audio analog signal to be transmitted acquired by the acquisition module; the DSP module is used to perform noise reduction processing on the audio analog signal to be transmitted after the analog-to-digital conversion, and transmit it to the digital-to-analog conversion module to obtain an audio digital input signal; the acquisition module is a component that can collect and obtain external sounds, such as a microphone used in a KTV or a karaoke room, the DSP module adopts Stream1832A-44G, and the chip model of the analog-to-digital conversion module adopts AD12250A-SG / TR;

[0034] The DSP module has the following functions: 1) Audio signal processing: DSP can perform various processing on audio signals, such as noise reduction, echo cancellation, enhancing or attenuating sounds of certain frequencies, adjusting volume, etc.; 2) Distortion reduction: By adjusting and processing audio signals in the digital domain, DSP can effectively reduce signal distortion and improve audio quality; 3) Sound effects: DSP can also create various sound effects, such as adding reverberation, virtual surround sound effects, or simulating special sound scenes; 4) Adapter: DSP can also serve as an adapter between different digital audio devices, converting one audio format into another to meet the input and output requirements of different devices;

[0035] The digital-to-analog conversion module is connected to the power amplifier module and is used to perform digital-to-analog conversion on the audio digital input signal to obtain an audio analog signal and transmit it to the power amplifier module;

[0036] The power amplifier module is connected to a loudspeaker, which is used to amplify the received audio analog signal to obtain an audio power amplifier signal, and play the audio power amplifier signal through the loudspeaker; the loudspeaker is the output terminal of the sound system, which is responsible for converting the analog signal amplified by the power amplifier module into audible sound;

[0037] The MCU main control module is connected to the digital-to-analog conversion module and the power amplifier module respectively, and is used to receive the trigger signal of the button when the sound is started, turned off or switched mode as the first control signal; and control the MUTE mute pins of the digital-to-analog conversion module and the power amplifier module according to the first control signal to eliminate the POP sound generated when the sound is started, turned off or switched mode;

[0038] Specifically, the MCU main control module controls the MUTE pin of the digital-to-analog conversion module and the power amplifier module, which is mainly used when the audio is started, shut down or the mode is switched (audio signal is switched). For example, when the AUX interface input of the input audio is suddenly switched to Bluetooth mode, the MCU main control module will first control the MUTE pin to realize the mute control function, and then switch the mode. After the switching is completed or when the preset switching time threshold is reached, the MCU main control module will release the MUTE of the digital-to-analog conversion module and the power amplifier module to realize the normal transmission of the audio signal. Because the sound is started, shut down or the audio signal is switched, POP sound is also generated. The DSP module cannot eliminate the POP sound generated during this switching process. Therefore, the MCU main control module is required to control the MUTE pin of the digital-to-analog conversion module and the power amplifier module to eliminate the generated POP sound.

[0039] The POP sound suppression circuit is connected to the digital-to-analog conversion module and the power amplifier module respectively, and is used to obtain a second control signal, i.e., a power-off detection signal, when the power module is accidentally powered off, and control the MUTE mute pins of the digital-to-analog conversion module and the power amplifier module according to the second control signal to eliminate the POP sound generated at the audio speaker end when the power module is accidentally powered off;

[0040] like Figure 2 As shown, the POP sound suppression circuit includes a first transistor Q1, a second transistor Q2 and a third transistor Q3; and the first transistor Q1 adopts a PNP transistor, and the second transistor Q2 and the third transistor Q3 adopt NPN transistors; the base of the first transistor Q1 is connected to one end of the second resistor R2, the other end of the second resistor R2 is connected to one end of the first resistor R1 and one end of the first diode D1, the other end of the first resistor R1 is connected to the output end DC_IN of the power module, the other end of the first diode D1 is connected to one end of the third resistor R3 and one end of the first capacitor C1, and the other end of the first capacitor C1 is grounded, wherein the first capacitor C1 adopts an RVT aluminum electrolytic capacitor; the other end of the third resistor R3 is connected to one end of the fourth resistor R4 and the emitter of the first transistor Q1, and the other end of the fourth resistor R4 is grounded; the first transistor The collector of Q1 is connected to one end of the fifth resistor R5, one end of the sixth resistor R6 and one end of the seventh resistor R7, the other end of the fifth resistor R5 is grounded, the other end of the seventh resistor R7 is connected to the base of the second transistor Q2, the collector of the second transistor Q2 is connected to the MUTE mute pin of the digital-to-analog conversion module, and the emitter of the second transistor Q2 is grounded; the other end of the sixth resistor R6 is connected to the second diode D2, one end of the second capacitor C2 and one end of the eighth resistor R8, the other end of the second diode D2 is connected to the MUTE mute pin of the MCU main control module, the other end of the second capacitor C2 is grounded, and the second capacitor C2 adopts an MLCC ceramic capacitor; the other end of the eighth resistor R8 is connected to the base of the third transistor Q3, the collector of the third transistor Q3 is connected to the MUTE mute pin of the power amplifier module, and the emitter of the third transistor Q3 is grounded.

[0041] Specifically, in this embodiment, when the sound system is powered on normally, the first resistor R1 is connected to the power module DC_IN, and the power module DC_IN can charge the aluminum electrolytic capacitor C1; the power module DC_IN has a voltage drop of 0.7V through the first diode D1, and by adjusting the ratio of the third resistor R3 and the fourth resistor R4, the voltage at the emitter end can be controlled, thereby affecting the working state of the PNP transistor Q1, and the voltage obtained at the emitter end of the PNP transistor Q1 is: The voltage of the power module received by the base end of the PNP transistor Q1 is DC_IN; when the voltage at the emitter end of the PNP transistor Q1 is much smaller than the base current, the PNP transistor Q1 will be in the cut-off state. Under the cut-off condition, the current change between the collector and the base of the PNP transistor Q1 is minimal and close to zero. This also shows that no matter how the current on the base changes, the PNP transistor Q1 does not conduct current. At this time, the NPN transistor Q2 that controls the MUTE pin of the digital-to-analog conversion module is also non-conducting and is in the current cut-off stage, and the NPN transistor Q3 that controls the MUTE pin of the power amplifier module is also non-conducting and is in the current cut-off stage, and the audio system works normally; when the audio system encounters an unexpected power outage, the base and emitter terminals of the PNP transistor Q1 will have no input of the DC_IN current of the power module, and the charge stored in the aluminum electrolytic capacitor C1 begins to be released. During the release process, the current at the emitter terminal of the PNP transistor Q1 can be directly provided by the aluminum electrolytic capacitor C1, and when the current at the base terminal of the PNP transistor Q1 is less than the current at the emitter, the PNP transistor Q1 will be turned on, and after being turned on, a control signal will be sent through resistors R6 and R8 to realize the conduction control of the NPN transistor Q3, thereby realizing the control of the MUTE pin of the power amplifier module. At the same time, the control signal will also pass through the resistor R7 to realize the conduction control of the NPN transistor Q2, thereby realizing the control of the MUTE mute pin of the digital-to-analog conversion module.

[0042] In the present implementation, during the normal operation of the audio system, once the system is powered on, the power module will provide stable power to each module. At this time, the MCU main control module will play its control role and control the digital-to-analog converter and the power amplifier module by sending control instructions to achieve mute control. However, if the power module is abnormally powered off, the MCU main control module will not work properly and will not be able to send control instructions to achieve mute control. In this case, the POP sound suppression circuit will intervene and take over the control of the digital-to-analog converter and the power amplifier module to maintain the stability of the audio system and prevent unnecessary noise. This design ensures that the audio system can maintain normal operation even in the case of abnormal power supply, improves the reliability of the system and user experience, not only achieves an increase in the output power of the audio, but also ensures a high standard of sound quality, bringing users a good music enjoyment.

[0043] In a specific embodiment, the efficient intelligent control POP sound optimization system for the portable high-power audio system further includes a DMA controller for eliminating external noise, and a process for clearing the DMA cache to eliminate noise is obtained according to the DMA controller: Figure 5As shown, after the power is turned on, the acquisition module of the system starts to capture audio data; first, the preset bias voltage connected to the DMA controller is powered on to ensure that the set audio codec registers and other audio circuits can work properly; then the system initializes the audio codec registers and other audio circuits so that they can process the audio data correctly. Subsequently, the system starts to initialize the DMA controller. The function of the DMA controller is to realize data transmission between the memory and the peripherals without occupying CPU resources. During the initialization process, the system will select a suitable DMA channel for transmitting audio data. When the DMA channel is selected, the audio data will enter the channel. At this time, the system needs to determine whether the channel is the first to capture audio data. If it is the first capture, the system will clear the initial audio signal data stream in the DMA channel through the DMA controller to eliminate possible noise or interference and cache it. This can ensure the quality of the audio data. If it is determined that the channel result is not the first capture of audio data, the system will directly transmit the audio data to the DSP module, so that the user can hear clear and smooth audio output; in short, in the whole process, the system ensures the accurate capture and playback of audio data by initializing the preset audio codec registers, selecting the DMA channel, and clearing the first captured audio data stream.

[0044] This embodiment adopts the PBTL mode, which is a technology that drives the speaker by connecting two amplifier output stages in parallel. In traditional audio systems, the amplifier output stages are usually connected in series, which limits the output power of the system. By connecting the two amplifier output stages in parallel, the PBTL mode not only significantly improves the output power of the audio amplifier, but also improves the overall energy efficiency. This means that the audio system can maintain a higher energy conversion efficiency while providing a more powerful output, thereby providing users with a more shocking auditory experience without sacrificing sound quality; the technical block diagram of the audio power amplifier using the PBTL mode is shown in FIG. Figure 4As shown, the output end of the audio power amplifier is provided with four ports, specifically Out1_P, Out1_M, Out2_P and Out2_M. These four ports have different functions and connection methods. Specifically, the Out1_P port is connected to the left end of the inductor L1, and the Out1_M port is connected to the left end of the inductor L2. Similarly, the Out2_P port is connected to the left end of the inductor L3, and the Out2_M port is connected to the left end of the inductor L4. This connection method helps to form a specific current path in the circuit. At the other end of the inductor, the right end of L1 is connected to the right end of L3 and the upper end of the capacitor C1 to form a parallel node. At the same time, the right end of L2 is connected to the right end of L4 and the lower end of the capacitor C2 to form another parallel node. This parallel connection helps distribute the current between two different nodes, thereby improving the overall performance of the circuit. The lower end of capacitor C1 is connected to the ground GND, and the upper end of capacitor C2 is also connected to the ground GND. The connection method of these two capacitors helps stabilize the circuit and provide the necessary power supply filtering function. In PBTL mode, since the output impedance of the two channels is connected in parallel, the overall impedance will be halved, which will allow more current to pass through, thereby increasing the output power of the speaker. In addition to increasing the output power, the PBTL mode also helps to improve the efficiency of the power amplifier. The improvement in efficiency means that less energy will be lost in the form of heat in the process of converting electrical energy into sound energy. This is particularly important for high-fidelity audio systems because it ensures that more energy is used to produce clear and accurate audio output rather than being wasted on useless heat energy. In this embodiment, a POP sound suppression circuit of the intelligent control POP sound optimization system is designed based on the framework of the PBTL mode, that is, a power-off detection circuit is added to specifically control the MUTE mute pin of the power amplifier module IC and the MUTE mute pin of the digital-to-analog conversion module DAC. The POP sound suppression circuit solves the POP sound problem that may occur in the speaker when the power module is accidentally powered off. Through this power-off detection circuit, the intelligent control POP sound optimization system can quickly detect this situation at the moment of power failure, and immediately mute the sound by controlling the MUTE mute pin of the power amplifier module IC and the MUTE mute pin of the digital-to-analog conversion module DAC, thereby effectively avoiding the generation of POP sound.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. An efficient intelligent control POP sound optimization system for a portable high-power speaker, the intelligent control POP sound optimization system is used to eliminate the POP sound generated when the speaker is started / shut down / switched mode / power supply is abnormal; characterized in that: The intelligent control POP sound optimization system includes a power module for providing power, and an MCU main control module, a digital-to-analog conversion module, a power amplifier module, a POP sound suppression circuit, and an audio signal acquisition module connected to the power module; The audio signal acquisition module is used to collect the audio digital input signal to be played by the audio system; The digital-to-analog conversion module is used to perform digital-to-analog conversion on the audio digital input signal to obtain an audio analog signal and transmit it to the power amplifier module; The power amplifier module is used to amplify the received audio analog signal to obtain an audio power amplifier signal, and play the audio power amplifier signal through a speaker; The MCU main control module is connected to the digital-to-analog conversion module and the power amplifier module respectively, and is used to receive the trigger signal of the button when the sound is started, turned off or switched mode as the first control signal, and control the MUTE mute pins of the digital-to-analog conversion module and the power amplifier module according to the first control signal to eliminate the POP sound generated when the sound is started, turned off or switched mode; The POP sound suppression circuit is respectively connected to the digital-to-analog conversion module and the power amplifier module, and is used to obtain a second control signal, i.e., a power-off detection signal, when the power module is accidentally powered off, and control the MUTE pins of the digital-to-analog conversion module and the power amplifier module according to the second control signal to eliminate the POP sound generated at the audio speaker end when the power module is accidentally powered off.

2. According to claim 1, a high-efficiency intelligent control POP sound optimization system for portable high-power audio is characterized in that: The audio signal acquisition module includes an analog-to-digital conversion module, a DSP module and an acquisition module; The analog-to-digital conversion module is connected to the DSP module, and the analog-to-digital conversion module is used to perform analog-to-digital conversion on the audio analog signal to be transmitted acquired by the acquisition module; The DSP module is used to perform noise reduction processing on the audio analog signal to be transmitted after analog-to-digital conversion, and transmit it to the digital-to-analog conversion module to obtain the audio digital input signal.

3. According to claim 1, a highly efficient intelligent control POP sound optimization system for a portable high-power audio system is characterized in that: The POP sound suppression circuit includes a first transistor Q1, a second transistor Q2 and a third transistor Q3; The base of the first transistor Q1 is connected to one end of the second resistor R2, the other end of the second resistor R2 is connected to one end of the first resistor R1 and one end of the first diode D1, the other end of the first resistor R1 is connected to the output end DC_IN of the power module, the other end of the first diode D1 is connected to one end of the third resistor R3 and one end of the first capacitor C1, and the other end of the first capacitor C1 is grounded, the other end of the third resistor R3 is connected to one end of the fourth resistor R4 and the emitter of the first transistor Q1, and the other end of the fourth resistor R4 is grounded; The collector of the first transistor Q1 is connected to one end of the fifth resistor R5, one end of the sixth resistor R6 and one end of the seventh resistor R7, the other end of the fifth resistor R5 is grounded, the other end of the seventh resistor R7 is connected to the base of the second transistor Q2, the collector of the second transistor Q2 is connected to the MUTE mute pin of the digital-to-analog conversion module, and the emitter of the second transistor Q2 is grounded; the other end of the sixth resistor R6 is connected to the second diode D2, one end of the second capacitor C2 and one end of the eighth resistor R8, the other end of the second diode D2 is connected to the MUTE mute pin of the MCU main control module, and the other end of the second capacitor C2 is grounded; The other end of the eighth resistor R8 is connected to the base of the third transistor Q3, and the collector of the third transistor Q3 is connected to the MUTE pin of the power amplifier module, and the emitter of the third transistor Q3 is grounded.

4. According to claim 3, a highly efficient intelligent control POP sound optimization system for a portable high-power audio system is characterized in that: The first transistor Q1 is a PNP transistor, and the second transistor Q2 and the third transistor Q3 are NPN transistors.

5. According to claim 3, a highly efficient intelligent control POP sound optimization system for a portable high-power audio system is characterized in that: The first capacitor C1 is an RVT aluminum electrolytic capacitor, and the second capacitor C2 is an MLCC ceramic capacitor.

6. According to claim 2, a high-efficiency intelligent control POP sound optimization system for portable high-power audio is characterized in that: The chip model of the MCU main control module is APM32F030RCT6. The DSP module adopts Stream1832A-44G, the chip model of the analog-to-digital conversion module adopts AD12250A-SG / TR, the chip model of the digital-to-analog conversion module adopts PCM1690DCAR, and the chip model of the power amplifier module adopts TPA3220DDWR.

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