Intelligent voice control active sound box circuit system

Abstract

The utility model discloses an intelligent voice control active sound box circuit system, which comprises an intelligent audio processing circuit, an MCU (Microprogrammed Control Unit) control and audio processing circuit, a power supply circuit, a pickup module, a control signal input module and an audio playing module, the audio playing module control signal input module and the pickup module are respectively connected with the intelligent audio processing circuit, and the audio playing module is connected with the MCU control and audio processing circuit; an MIC mute control circuit is arranged between the pickup module and the control signal input module and is used for muting or de-muting voice signals acquired by the pickup module, so that the privacy of a user is protected; the power supply circuit comprises an auxiliary power supply circuit, the auxiliary power supply circuit comprises a diode serving as a switch and an isolation element, switching between commercial power input and battery power supply is realized through forward conduction and reverse bias cut-off functions of the diode, power loss can be reduced, and product cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of speaker product technology, and in particular to a control circuit system for an intelligent voice-controlled active speaker. Background Technology

[0002] Speakers are widely used electronic devices, and with technological advancements, they have entered the era of intelligent technology. For example, the intelligent speaker disclosed in Chinese invention patent application CN201810103688.4 includes a microphone array module, a voice processing module, a power amplifier module, and a speaker, capable of picking up, processing, and playing the user's voice information. However, existing intelligent speakers typically suffer from several problems: for instance, the collected user voice signal can be affected by the MCU and other circuit software, potentially leading to user privacy leaks; furthermore, to achieve seamless switching between two power sources, traditional systems typically equip each power source with a separate switch (usually a power MOSFET), such as... Figure 17 As shown, when switch K1 is on and K2 is off, the speaker is powered entirely by an external power source. When K1 is off and K2 is on, the speaker is powered by an internal lithium battery pack (with a voltage boosting process). This method requires two expensive high-power MOSFETs, a complex control circuit, and precise timing management by the controller software. Switch K1 also incurs losses, reducing the overall efficiency of the amplifier. If a malfunction occurs in the control circuit, switches K1 and K2 may open simultaneously. This necessitates precise matching between the external power supply voltage and the boosted battery voltage; otherwise, conflicts between the two power sources can occur, leading to energy loss, potential component damage, and reduced product reliability. Furthermore, speaker buttons (mechanical or touch-sensitive) typically correspond to a single function, or differentiate between long and short presses for different functions. However, this still falls short of the increasingly sophisticated control requirements of smart speakers. Utility Model Content

[0003] This utility model addresses the shortcomings of existing technologies by providing a smart voice-controlled active speaker circuit system that features a more rational design, better privacy, lower cost, higher reliability, and more diverse operation and control methods.

[0004] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: an intelligent voice-controlled active speaker circuit system, including an intelligent audio processing circuit, an MCU control and audio processing circuit, a power supply circuit, a microphone module, a control signal input module, and an audio playback module. The intelligent audio processing circuit is connected to the MCU control and audio processing circuit. The control signal input module and the microphone module of the audio playback module are respectively connected to the intelligent audio processing circuit. The audio playback module is connected to the MCU control and audio processing circuit. The power supply circuit includes a battery charging circuit and a boost circuit. The audio playback module includes a power amplifier circuit and a speaker. The feature is that a MIC mute control circuit is provided between the microphone module and the control signal input module. The output of the MIC mute control circuit is flipped to mute or unmute the user voice signal collected by the microphone module. The power supply circuit also includes an auxiliary power supply circuit, which includes a diode as a switch and isolation element. The switching between AC power input and battery power supply is realized through the forward conduction and reverse bias cutoff functions of the diode.

[0005] Furthermore, the MCU control and audio processing circuit uses the control chip IC26, model AP8248A2, which integrates a 32-bit RISC processor and DSP to control the speaker system and process audio signals.

[0006] Furthermore, the intelligent audio processing circuit adopts the wireless intelligent audio module A98M. The wireless intelligent audio module A98M is used to connect to the Internet to play streaming music and connect to Bluetooth to play audio from mobile devices. It also processes the user's voice collected by the pickup module and uploads it to the Amazon AVS server to realize the speaker's voice control function. The wireless intelligent audio module A98M is connected to a license chip IC17, model number MFI343S00176, which is used to obtain Apple AirPlay functionality.

[0007] The microphone module includes a microphone signal input circuit and a microphone signal analog-to-digital converter (ADC) circuit. The ADC circuit is connected to the intelligent audio processing circuit, and the microphone signal input circuit and the microphone mute control circuit are respectively connected to the ADC circuit. The microphone signal input circuit includes two MEMS silicon microphones, MIC1 and MIC2, used to acquire the user's voice signal. The microphone mute control circuit includes a Schmitt trigger IC15 and a D flip-flop IC16. The Schmitt trigger IC15 is model 74LVC1G14GV, and the D flip-flop IC16 is model 74LVC1G74DC. The Schmitt trigger IC15 is used to deselect the input microphone mute button signal. Interference is mitigated by the fact that each press of the button causes the output of the bistable circuit composed of D flip-flop IC16 to flip once, thereby controlling the muting or unmute of the collected user voice signal. The MIC signal analog-to-digital conversion circuit uses ADC analog-to-digital converter chip IC2, model ES7243E, which is used to convert the analog signal obtained by the microphone into a digital signal for input to the intelligent audio processing circuit. The ADC analog-to-digital converter chip IC2 is connected to analog switch IC18, model SN74LVC1G3157, which is used to turn the microphone voice signal on and off, thereby cooperating with the MIC mute control circuit to control the microphone voice signal.

[0008] The control signal input module includes a line signal and button control input circuit and a line input signal analog-to-digital conversion circuit. The line input signal analog-to-digital conversion circuit is connected to the intelligent audio processing circuit, and the line signal and button control input circuit is connected to the line input signal analog-to-digital conversion circuit. The MIC mute control circuit is connected to the line signal and button control input circuit. The line signal and button control input circuit includes a 3.5AUX line input interface, a power button S6, and a MIC mute button S5. It is used to input audio signals from external audio sources to the speaker and to send the interface connection action to the MCU control and audio processing circuit through the AUX_DET signal line to realize automatic signal switching. The power button S6 turns on the speaker when pressed and held while it is off, and turns it off when it is on. The MIC mute button S5 is used to mute or unmute the signal. When mute, LED5 displays red to indicate to the user that the MIC is muted. The line input signal analog-to-digital conversion circuit converts the analog audio signal input from the 3.5AUX line input interface into a digital signal and then inputs it to the speaker.

[0009] Furthermore, it also includes a touch button circuit and a button backlight circuit, which are respectively connected to the MCU control and audio processing circuits. The touch button circuit uses four capacitive touch buttons S1-S4, and the processing of each button is controlled by the control chip IC7, which is model WTC1006BSI. Buttons S3 and S4 are relatively independent and separate to form two independently usable buttons. Buttons S1 and S2 have a structure in which the contacts are interlaced and interlocked, so that buttons S1 and S2 have independent use mode and combined use mode. When a finger slides from button S1 to button S2 and when a finger slides from button S2 to button S1, three different timing signals will be generated to correspond to different control modes.

[0010] Furthermore, the auxiliary power supply circuit also includes a switching transistor Q1. The base of the switching transistor Q1 is connected to the positive terminal of the diode D3 through a resistor R68, and the emitter of the switching transistor Q1 is connected to the negative terminal of the diode D3. The diode D3 is connected between the boost circuit and the power amplifier circuit.

[0011] Furthermore, the boost circuit adopts a DC-DC boost circuit. The DC-DC boost circuit increases the output voltage of the battery and provides power to the power amplifier circuit. It is controlled by MOSFET Q7 to disconnect the battery connection in order to reduce the battery discharge loss during standby. The DC-DC boost circuit uses control chip IC11, model number JW5510, and diode D3 is connected to the output terminal of control chip IC11.

[0012] The power amplifier circuit includes left and right tweeter power amplifier circuits and woofer power amplifier circuits. The woofer power amplifier circuit is connected to a woofer, and the left and right tweeter power amplifier circuits are connected to two tweeters.

[0013] Furthermore, the left and right tweeter power amplifier circuits use power amplifier chip IC5, model TAS5805M, which has a built-in MINIDSP. Power amplifier chip IC5 operates in BTL mode to achieve electronic crossover and capture the high-frequency part of the music; the woofer power amplifier circuit uses power amplifier chip IC4, model TAS5805M. Power amplifier chip IC4 operates in PBTL mode to achieve electronic crossover and capture the low-frequency part of the music.

[0014] This invention, while offering multiple functional modes, simplifies the circuit structure, reduces cost, and improves efficiency and reliability. By designing an auxiliary circuit for the power supply circuit, primarily using switches and isolation diodes, it better controls the switching between AC and battery power, reducing power loss and lowering product costs. The designed MIC mute control circuit allows for the muting or unmute of user voice signals collected by the MIC, unaffected by MCU or other circuit software, thus providing more reliable protection of user privacy. The S1 and S2 buttons in the touch button circuit are designed with interleaved, embedded contacts, allowing for independent use and combined operations, providing more operating modes. Attached Figure Description

[0015] Figure 1 This is a circuit block diagram of the present invention;

[0016] Figure 2 This is a circuit diagram for line signals and key control inputs;

[0017] Figure 3 This is a circuit diagram for the analog-to-digital conversion of the line input signal.

[0018] Figure 4 This is a circuit diagram for MCU control and audio processing.

[0019] Figure 5 Diagram of the MIC mute control circuit;

[0020] Figure 6 Diagram of the MIC signal input circuit;

[0021] Figure 7 This is a circuit diagram for intelligent audio processing.

[0022] Figure 8 This is a circuit diagram for the analog-to-digital conversion of the MIC signal.

[0023] Figure 9 This is a circuit diagram for a touch-sensitive button.

[0024] Figure 10 This is the circuit diagram for the button backlight.

[0025] Figure 11 This is the circuit diagram for the left and right tweeter power amplifiers;

[0026] Figure 12 This is a circuit diagram for a bass power amplifier.

[0027] Figure 13 Circuit diagram for charging the battery;

[0028] Figure 14 This is a diagram of a DC-DC boost converter circuit.

[0029] Figure 15 This is the circuit diagram for the auxiliary power supply.

[0030] Figure 16 This is a block diagram illustrating the power management principle of this utility model.

[0031] Figure 17 This is a block diagram of the power management principle in existing technology. Detailed Implementation

[0032] In this embodiment, refer to Figures 1-16 The intelligent voice-controlled active speaker circuit system includes an intelligent audio processing circuit, an MCU control and audio processing circuit, a power supply circuit, a microphone module, a control signal input module, and an audio playback module. The intelligent audio processing circuit is connected to the MCU control and audio processing circuit. The control signal input module and the microphone module are respectively connected to the intelligent audio processing circuit, and the audio playback module is connected to the MCU control and audio processing circuit. The power supply circuit includes a battery charging circuit and a boost circuit. The audio playback module includes a power amplifier circuit and a speaker. A microphone mute control circuit is provided between the microphone module and the control signal input module. The microphone mute control circuit can mute or unmute the user voice signal collected by the microphone module by flipping the output. The power supply circuit also includes an auxiliary power supply circuit, which includes a diode as a switch and isolation element. The diode's forward conduction and reverse bias cutoff functions realize the switching between AC power input and battery power supply.

[0033] like Figure 4 As shown, the MCU control and audio processing circuit uses the control chip IC26, model AP8248A2, which integrates a 32-bit RISC processor and DSP to control the speaker system and process audio signals.

[0034] like Figure 7 As shown, the intelligent audio processing circuit uses the wireless intelligent audio module A98M. The wireless intelligent audio module A98M is used to connect to the Internet to play streaming music and to connect via Bluetooth to play audio from mobile devices. It also processes the user's voice collected by the pickup module and uploads it to the Amazon AVS server to realize the speaker's voice control function. The wireless intelligent audio module A98M is connected to a license chip IC17, model number MFI343S00176, which is used to obtain Apple AirPlay functionality.

[0035] like Figure 5 , Figure 6 and Figure 7As shown, the microphone module includes a microphone signal input circuit and a microphone signal analog-to-digital converter (ADC) circuit. The ADC circuit is connected to the intelligent audio processing circuit, and the microphone signal input circuit and microphone mute control circuit are respectively connected to the ADC circuit. The microphone signal input circuit includes two MEMS silicon microphones, MIC1 and MIC2, used to acquire the user's voice signal. The microphone mute control circuit includes a Schmitt trigger IC15 and a D flip-flop IC16. The Schmitt trigger IC15 is a 74LVC1G14GV, and the D flip-flop IC16 is a 74LVC1G74DC. The Schmitt trigger IC15 is used to de-interference the input microphone mute button signal. Each time the button is pressed, the output of the bistable circuit formed by the D flip-flop IC16 flips once, thus controlling the acquisition of the user's voice signal to mute or unmute. This process is entirely implemented in hardware and is not affected by the MCU or other circuit software, thereby providing more reliable protection of user privacy. The MIC signal analog-to-digital conversion circuit uses ADC analog-to-digital converter chip IC2, model ES7243E, which is used to convert the analog signal obtained by the microphone into a digital signal for input to the intelligent audio processing circuit. The ADC analog-to-digital converter chip IC2 is connected to analog switch IC18, model SN74LVC1G3157, which is used to turn the microphone voice signal on and off, thereby working with the MIC mute control circuit to control the microphone voice signal.

[0036] like Figure 2 and Figure 3 As shown, the control signal input module includes a line signal and button control input circuit and a line input signal analog-to-digital conversion circuit. The line input signal analog-to-digital conversion circuit is connected to the intelligent audio processing circuit. The line signal and button control input circuit is connected to the line input signal analog-to-digital conversion circuit. The MIC mute control circuit is connected to the line signal and button control input circuit. The line signal and button control input circuit includes a 3.5AUX line input interface, a power button S6, and a MIC mute button S5. It is used to input audio signals from external audio sources to the speaker, and to send the interface connection action to the MCU control and audio processing circuit through the AUX_DET signal line to realize automatic signal switching. The power button S6 is pressed and held to turn on when the power is off, and pressed to turn off when the power is on. The MIC mute button S5 is used to mute or unmute the signal. When mute, LED 5 displays red to indicate to the user that the MIC is muted. When muted, LED 5 will display red to indicate to the user that the microphone is muted, allowing the user to accurately know the current status of the microphone and thus avoid leakage of personal privacy; the line input signal analog-to-digital converter circuit converts the analog audio signal input from the 3.5AUX line input interface into a digital signal before inputting it to the speaker.

[0037] like Figure 9 and Figure 10 As shown, it also includes a touch button circuit and a button backlight circuit, which are respectively connected to the MCU control and audio processing circuits. The touch button circuit uses four capacitive touch buttons S1-S4. The processing of each button is controlled by the control chip IC7, which is model WTC1006BSI. Buttons S3 and S4 are relatively independent and separate to form two independently usable buttons. Buttons S1 and S2 have a structure in which the contacts are interlaced and interlocked, so that buttons S1 and S2 have independent use mode and combined use mode. When a finger slides from button S1 to button S2 and when a finger slides from button S2 to button S1, three different timing signals will be generated to correspond to different control modes.

[0038] This utility model uses buttons S1-S4 to achieve input mode switching, WPS pairing, Bluetooth pairing, ALEXA trigger wake-up, volume up, volume down, previous track, next track, play, pause, and other control operations. Such a wide range of control functions would be difficult to achieve using traditional button operation methods. Therefore, this invention employs... Figure 9 The touch button circuit shown has S3 and S4 buttons with conventional contact shapes, allowing for completely independent operation. However, the contacts of S1 and S2 buttons are designed with an interlocking, nested shape, resembling a "W" shape. This allows S1 and S2 to be used independently or in combination. A user's finger sliding from S1 to S2 generates three signals: S1 open, both S1 and S2 open simultaneously, and S2 open. The controller software can then identify this sliding motion by observing changes in the signal level, which can be used to skip to the previous track. Similarly, sliding from S2 to S1 generates three signals with different timing sequences, enabling skipping to the next track. If a finger is placed between two buttons, both S1 and S2 open simultaneously, allowing for music play / pause control. In situations where speaker structure limits the use of more buttons, this invention effectively achieves the requirement of controlling numerous modes with a limited number of buttons.

[0039] like Figure 14 As shown, the auxiliary power supply circuit also includes a switching transistor Q1. The base of the switching transistor Q1 is connected to the positive terminal of the diode D3 through a resistor R68, and the emitter of the switching transistor Q1 is connected to the negative terminal of the diode D3. The diode D3 is connected between the boost circuit and the power amplifier circuit.

[0040] The boost circuit adopts a DC-DC boost circuit, which increases the output voltage of the battery and provides power to the power amplifier circuit. The MOSFET Q7 is used to disconnect the battery connection to reduce the battery discharge loss during standby. The DC-DC boost circuit uses the control chip IC11, model number JW5510, and diode D3 is connected to the output terminal of the control chip IC11.

[0041] The power amplifier circuit includes left and right tweeter power amplifier circuits and woofer power amplifier circuits. The woofer power amplifier circuit is connected to a woofer, and the left and right tweeter power amplifier circuits are connected to two tweeters.

[0042] like Figure 11 and Figure 12 As shown, the left and right tweeter power amplifier circuits use power amplifier chip IC5, model TAS5805M, which has a built-in MINIDSP. Power amplifier chip IC5 operates in BTL mode to achieve electronic crossover, capture the high-frequency part of the music, and output it to the tweeter for playback. The woofer power amplifier circuit uses power amplifier chip IC4, model TAS5805M. Power amplifier chip IC4 operates in PBTL mode to achieve electronic crossover, capture the low-frequency part of the music, and output it to the woofer for playback.

[0043] The basic working principle of this utility model is as follows: The intelligent audio processing circuit integrates WIFI and Bluetooth circuits, enabling it to play audio from the network and mobile devices. Simultaneously, it can input signals from external audio sources into the speakers via a line signal input circuit. After receiving music, the intelligent audio processing circuit transmits it to the next-level MCU control and audio processing circuit. This circuit processes the audio volume and sound effects, and the processed signal is then transmitted to the next-level power amplifier circuit. The power amplifier circuit has two main functions: firstly, it performs electronic crossover, separating the high and low frequencies of the music and outputting them to the corresponding speakers; secondly, it amplifies the signal to provide sufficient power to drive the speakers and output music.

[0044] The principle behind the voice control function of this invention is as follows: For example, a user can wake up the speaker by calling its name "ALEXA" and then communicate with it via voice to control it. Specifically, the circuitry involves a MIC signal input circuit that receives the user's voice signal. These analog signals are converted into digital signals by a MIC signal analog-to-digital converter circuit and input to an intelligent audio processing circuit. After initial processing, the intelligent audio processing circuit sends the signal to Amazon's AVS server via the network. AVS recognizes the user's voice and transmits the results back to the speaker to perform corresponding operations, such as controlling the speaker's volume or selecting songs. The MIC mute control circuit is entirely hardware-controlled. The user can mute the MIC signal by using line signals and buttons to control the MIC mute button in the input circuit. These controls are not software-controlled, preventing unauthorized intruders from controlling the speaker via the network to obtain the user's private information.

[0045] This allows the smart speaker in this embodiment to support WIFI, Bluetooth, and AUX input modes, Apple AirPlay 2, Amazon AVS voice control, touch buttons, and AC and lithium battery power. It can connect to the Internet via WIFI to play mainstream streaming music, and can also connect via Bluetooth to output audio from mobile devices such as smartphones. It can also connect to external audio sources via a 3.5mm line input interface to play music, and can share music output from other smart speaker products through multi-room technology.

[0046] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of this application should still fall within the scope of the present invention.

Claims

1. An intelligent voice control active speaker circuit system, comprising a smart audio processing circuit, an MCU control and audio processing circuit, a power supply circuit, a pickup module, a control signal input module and an audio playing module, the smart audio processing circuit is connected with the MCU control and audio processing circuit, the audio playing module, the control signal input module and the pickup module are respectively connected with the smart audio processing circuit, and the audio playing module is connected with the MCU control and audio processing circuit; the power supply circuit comprises a battery charging circuit and a boost circuit, and the audio playing module comprises a power amplifier circuit and a loudspeaker, characterized in that: A MIC mute control circuit is arranged between the pickup module and the control signal input module, and the MIC mute control circuit is used to realize mute or un-mute control of the user voice signal collected by the pickup module through output flip; the power supply circuit further comprises an auxiliary power supply circuit, and the auxiliary power supply circuit comprises a diode as a switching and isolation element, and the switching between mains input and battery power supply is realized through the forward conduction and reverse bias blocking functions of the diode.

2. The intelligent voice controlled active speaker circuitry of claim 1, wherein: The MCU control and audio processing circuit adopts a control chip IC26, and the model of the control chip IC26 is AP8248A2, which integrates a 32-bit RISC processor and a DSP, and is used to realize control of the sound box system and processing of the audio signal.

3. The intelligent voice controlled active speaker circuitry of claim 2, wherein: The intelligent audio processing circuit adopts a wireless intelligent audio module A98M, which is used to connect Internet to play streaming media music and connect Bluetooth to play audio of a mobile device, and upload the user voice collected by the pickup module to an Amazon AVS server after processing to realize the voice control function of the sound box; the wireless intelligent audio module A98M is connected with a License chip IC17, and the model of the License chip IC17 is MFI343S00176, which is used to obtain the Apple AIR PLAY function.

4. The intelligent voice controlled active speaker circuitry of claim 3, wherein: The pickup module comprises a MIC signal input circuit and a MIC signal analog-digital conversion circuit, the MIC signal analog-digital conversion circuit is connected with the intelligent audio processing circuit, and the MIC signal input circuit and the MIC mute control circuit are respectively connected with the MIC signal analog-digital conversion circuit; the MIC signal input circuit comprises two MEMS silicon microphones MIC1 and MIC2, which are used to obtain the user voice signal; the MIC mute control circuit comprises a Schmitt trigger IC15 and a D flip-flop IC16, the model of the Schmitt trigger IC15 is 74LVC1G14GV, and the model of the D flip-flop IC16 is 74LVC1G74DC; the Schmitt trigger IC15 is used to remove interference of the input MIC mute key signal, and the D flip-flop IC16 constitutes a bistable circuit, and the output of the bistable circuit is flipped once through the key of the Schmitt trigger IC15, so as to realize mute or un-mute control of the collected user voice signal; the MIC signal analog-digital conversion circuit adopts an ADC analog-digital conversion chip IC2, and the model of the ADC analog-digital conversion chip IC2 is ES7243E, which is used to convert the analog signal obtained by the microphone into a digital signal and input the digital signal to the intelligent audio processing circuit; the ADC analog-digital conversion chip IC2 is connected with an analog switch IC18, and the model of the analog switch IC18 is SN74LVC1G3157, which is used to realize connection and disconnection of the microphone voice signal, so as to realize control of the microphone voice signal in cooperation with the MIC mute control circuit.

5. The intelligent voice controlled active speaker circuitry of claim 4, wherein: The control signal input module comprises a line signal and key control input circuit and a line input signal analog-digital conversion circuit, the line input signal analog-digital conversion circuit is connected with the intelligent audio processing circuit, the line signal and key control input circuit is connected with the line input signal analog-digital conversion circuit, and the MIC mute control circuit is connected with the line signal and key control input circuit.

6. The intelligent voice controlled active speaker circuitry of claim 2, wherein: The line signal and key control input circuit comprises a 3.5 AUX line input interface, a power key S6 and a MIC mute key S5, which are used for inputting the audio signal of an external sound source to the sound box and sending the action of the interface to the MCU control and audio processing circuit through an AUX_DET signal line for realizing automatic switching of the signal; the power key S6 is long-pressed to turn on in the shutdown state and is pressed to turn off in the start-up state; the MIC mute key S5 is used for realizing mute or un-mute signal, and the LED 5 displays red color for prompting the user that the MIC is muted in the mute state; the line input signal analog-digital conversion circuit converts the analog audio signal input by the 3.5 AUX line input interface into a digital signal and inputs the digital signal to the sound box.

7. The intelligent voice controlled active speaker circuitry of claim 1, wherein: The touch key circuit and the key backlight circuit are also included and are connected with the MCU control and audio processing circuit respectively; the touch key circuit adopts four capacitive touch keys S1-S4, the processing of each key is controlled by a control chip IC7, and the model of the control chip IC7 is WTC1006BSI; the keys S3 and S4 are relatively independently separated to form two independently used keys, the keys S1 and S2 are of a structure in which the contacts are staggered and embedded with each other, so that the keys S1 and S2 comprise an independent use mode and a combined use mode, and the finger sliding from the key S1 to the key S2 and the finger sliding from the key S2 to the key S1 will respectively generate three different time sequences of signals to correspond to different control modes.

8. The intelligent voice controlled active speaker circuitry of claim 7, wherein: The auxiliary power supply circuit further comprises a switching tube Q1, the base of the switching tube Q1 is connected with the anode of a diode D3 through a resistor R68, the emitter of the switching tube Q1 is connected with the cathode of the diode D3, and the diode D3 is connected between the boost circuit and the power amplifier circuit. The boost circuit adopts a DC-DC boost circuit, the DC-DC boost circuit raises the output voltage of the battery and provides power supply to the power amplifier circuit, and is controlled by a MOS tube Q7 for disconnecting the battery connection to realize reduction of the discharge loss of the battery in standby state.

9. The intelligent voice controlled active speaker circuitry of claim 8, wherein: The DC-DC boost circuit adopts a control chip IC11, the model of which is JW5510, and the diode D3 is connected with the output end of the control chip IC11. The power amplifier circuit comprises left and right high-power amplification circuits and a low-power amplification circuit, the low-power amplification circuit is connected with a low-frequency loudspeaker, and the left and right high-power amplification circuits are connected with left and right two high-frequency loudspeakers.

10. The intelligent voice controlled active speaker circuitry of claim 9, wherein: The left and right high-pitched power amplification circuit adopts a power amplification chip IC5, the model of the power amplification chip IC5 is TAS5805M, and the power amplification chip IC5 is internally provided with a MINIDSP, and the power amplification chip IC5 works in a BTL mode to realize electronic frequency division and obtain a high-frequency part of music; the bass power amplification circuit adopts a power amplification chip IC4, the model of the power amplification chip IC4 is also TAS5805M, and the power amplification chip IC4 works in a PBTL mode to realize electronic frequency division and obtain a low-frequency part of music.

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