A high sensitivity far field voice interactive television control circuit

Abstract

The utility model discloses a high -sensitive far field voice interaction television control circuit, including main control module, pick -up array, infrared remote control module and first state indicating module, pick -up array is connected with main control module and is distributed on the television, is used for receiving the voice control signal of user, infrared remote control module is connected with main control module, is used for receiving infrared remote control control signal, first state indicating module is connected with main control module, is used for indicating voice signal receiving state, main control module can receive the voice control signal of pick -up array received or the remote control control signal of infrared remote control module received and execute the action of predetermining, can improve the pick -up ability to weak sound through above -mentioned circuit, enhance target voice signal, restrain the interference sound of other direction, realize far field voice interaction function.

Description

Technical Field

[0001] This utility model relates to the field of smart TVs, and in particular to a highly sensitive far-field voice interaction TV control circuit. Background Technology

[0002] With the development of smart homes, the far-field voice interaction function of smart TVs has become crucial for improving user experience. However, existing far-field voice hardware for TVs has many shortcomings, such as low voice pickup sensitivity, failing to accurately capture user voice commands when the user is far from the TV or in noisy environments, leading to voice interaction failure. Secondly, existing voice hardware has poor anti-interference capabilities; sounds from other electrical appliances and ambient background noise can easily interfere with the voice signal, significantly reducing the accuracy of voice recognition. Furthermore, the hardware has poor compatibility with the TV system, often resulting in delays and stuttering during data transmission and processing, affecting the smoothness of voice interaction. Therefore, a highly sensitive far-field voice interaction TV control circuit is urgently needed to solve these problems. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a highly sensitive far-field voice interactive television control circuit.

[0004] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: a high-sensitivity far-field voice interactive TV control circuit, including a main control module, a pickup array, an infrared remote control module and a first status indication module;

[0005] The microphone array is connected to the main control module and is evenly distributed on the TV to receive the user's voice control signals.

[0006] The infrared remote control module is connected to the main control module and is used to receive infrared remote control signals;

[0007] The first status indicator module is connected to the main control module and is used to indicate the voice signal reception status;

[0008] The main control module can execute preset actions when it receives voice control signals from the microphone array or remote control signals from the infrared remote control module.

[0009] As one of the preferred embodiments of this utility model, the pickup array includes at least two sets of microphone modules.

[0010] As one of the preferred embodiments of this utility model, the microphone module includes a microphone UM1, a capacitor CM1, a capacitor CM19, a capacitor CM21, resistors RM1-RM3 and a resistor RM5. One end of capacitor CM21 is connected to one end of capacitor CM1, one end of resistor RM1, the VDD pin of microphone UM1 and MIC_PWR. The other end of resistor RM1 is connected to one end of resistor RM5 and the L / R pin of microphone UM1. The DATA pin of microphone UM1 is connected to the main control module via resistor RM2. The CLK pin of microphone UM1 is connected to one end of resistor RM3 and one end of capacitor CM19. The other end of resistor RM3 is connected to the main control module. The other ends of capacitors CM19, CM21, and CM1, as well as the GND pin of microphone UM1, are connected to the ground terminal.

[0011] As one of the preferred embodiments of this utility model, the infrared remote control module includes an infrared receiver IR1, resistors RM35-RM37, and capacitors CM16-CM18. The VCC terminal of the infrared receiver IR1 is connected to one end of resistor RM35, one end of capacitor CM16, and one end of capacitor CM17, respectively. The other end of resistor RM35 is connected to power supply 5VS and one end of resistor RM36, respectively. The IR pin of the infrared receiver IR1 is connected to the other end of resistor RM36 and one end of resistor RM37, respectively. The other end of resistor RM37 is connected to the main control module and one end of capacitor CM18, respectively. The GND pin of the infrared receiver IR1, the other end of capacitor CM18, the other end of capacitor CM16, and the other end of capacitor CM17 are connected to the ground terminal.

[0012] In one preferred embodiment of this utility model, the first state indication module includes a MOSFET QM1, LED chips DM2-DM5, resistors RM22-RM27, and capacitors CM9-CM12. The gate of MOSFET QM1 is connected to the main control module via resistor RM23. The drain of MOSFET QM1 is connected to one end of resistor RM22, one end of resistor RM24, and the DIN pin of LED chip DM2. The VDD pin of LED chip DM2 is connected to power supply 5VS and one end of capacitor CM9. The DOUT pin of LED chip DM2 is connected to the DIN pin of LED chip DM3 and the other end of resistor RM24 via resistor RM25. The VDD pin of LED chip DM3 is connected to power supply 5VS and one end of capacitor CM10. The DOUT pin of LED chip DM3 is connected to the DIN pin of LED chip DM4 via resistor RM26. The VDD pin of LED chip DM4 is connected to power supply 5VS and one end of capacitor CM11. The DOUT pin of LED chip DM4 is connected to the DIN pin of LED chip DM5 via resistor RM27. The VDD pin of LED chip DM5 is connected to power supply 5VS and one end of capacitor CM12. The source of MOSFET QM1, the GND pins of LED chip DM2, DM3, DM4, and DM5, the other end of capacitor CM9, the other end of capacitor CM10, the other end of capacitor CM11, and the other end of capacitor CM12 are connected to the ground terminal.

[0013] As one of the preferred embodiments of this utility model, a highly sensitive far-field voice interactive TV control circuit also includes a mute button module connected to the main control module.

[0014] As a preferred embodiment of this utility model, the mute button module includes a button SW1, a bidirectional breakdown diode DM6, a transistor QM4, a MOSFET QM3, a capacitor CM13, a capacitor CM15, a resistor RM28, and resistors RM30-RM34. Pin 2 of button SW1 is connected to one end of resistor RM32 and one end of the bidirectional breakdown diode DM6. The other end of resistor RM32 is connected to one end of capacitor CM15, one end of resistor RM34, one end of resistor RM30, and the base of transistor QM4. The other end of resistor RM34 is connected to a +3.3V power supply. The transistor QM4... The collector is connected to one end of resistor R28 and one end of resistor RM31 respectively. The other end of resistor RM31 is connected to one end of capacitor CM13 and the gate of MOSFET QM3. The other end of resistor RM28 is connected to the +3.3V power supply, the other end of capacitor CM13 is connected to the source of MOSFET QM3, and the drain of MOSFET QM3 is connected to MIC_PWR and one end of resistor RM33. Pin 1 of button SW1, the other end of bidirectional breakdown diode DM6, the other end of capacitor CM15, the other end of resistor RM30, the emitter of transistor QM4, and the other end of resistor RM33 are connected to the ground terminal.

[0015] As one of the preferred embodiments of this utility model, a highly sensitive far-field voice interactive TV control circuit further includes a second status indication module connected to the main control module for indicating a mute state.

[0016] As one of the preferred embodiments of this utility model, a high-sensitivity far-field voice interactive TV control circuit also includes a power button module connected to the main control module.

[0017] As one of the preferred embodiments of this utility model, a high-sensitivity far-field voice interactive TV control circuit further includes a third status indicator module connected to the main control module for indicating the power-on status.

[0018] The beneficial effects of this utility model are as follows: A highly sensitive far-field voice interaction television control circuit includes a main control module, a microphone array, an infrared remote control module, and a first status indicator module; the microphone array is connected to the main control module and evenly distributed on the television, used to receive the user's voice control signals; the infrared remote control module is connected to the main control module, used to receive infrared remote control signals; the first status indicator module is connected to the main control module, used to indicate the voice signal reception status; the main control module can execute a preset action when it receives the voice control signal received by the microphone array or the remote control signal received by the infrared remote control module; the above circuit can improve the ability to pick up weak sounds, enhance the target voice signal, suppress interference sounds from other directions, and realize far-field voice interaction function. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a block diagram illustrating the principle of a highly sensitive far-field voice-interactive television control circuit.

[0021] Figure 2 The circuit schematic of the main control module;

[0022] Figure 3 This is the circuit schematic of a microphone array;

[0023] Figure 4 This is the circuit schematic of the infrared remote control module;

[0024] Figure 5 The circuit diagram for the mute button module;

[0025] Figure 6 This is the circuit schematic of the power button module;

[0026] Figure 7 The circuit schematic for the third state indicator module;

[0027] Figure 8 This is the circuit schematic of the first state indicator module;

[0028] Figure 9 The circuit schematic for the second state indicator module;

[0029] Figure 10 This is the circuit schematic for a high-speed data interface module. Detailed Implementation

[0030] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0031] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0032] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0034] Reference Figures 1 to 10 A highly sensitive far-field voice interaction television control circuit includes a main control module 10, a pickup array 20, an infrared remote control module 30, and a first status indication module 40.

[0035] The microphone array 20 is connected to the main control module 10 and is evenly distributed on the TV screen to receive the user's voice control signals.

[0036] The infrared remote control module 30 is connected to the main control module 10 and is used to receive infrared remote control signals.

[0037] The first status indicator module 40 is connected to the main control module 10 and is used to indicate the voice signal reception status.

[0038] The main control module 10 can perform preset actions when it receives a voice control signal received by the pickup array 20 or a remote control signal received by the infrared remote control module 30.

[0039] In this utility model, during television production and assembly, the microphone array 20 is accurately installed at a predetermined position on the television frame according to design requirements, referring to... Figures 1-3In some embodiments, the pickup array 20 includes at least two sets of microphone modules 21. As a preferred embodiment of the microphone module 21, the microphone module 21 includes a microphone UM1, capacitor CM1, capacitor CM19, capacitor CM21, resistors RM1-RM3, and resistor RM5. One end of capacitor CM21 is connected to one end of capacitor CM1, one end of resistor RM1, the VDD pin of microphone UM1, and the MI pin. The C_PWR connection connects the other end of resistor RM1 to one end of resistor RM5 and the L / R pin of microphone UM1. The DATA pin of microphone UM1 is connected to the main control module 10 via resistor RM2. The CLK pin of microphone UM1 is connected to one end of resistor RM3 and one end of capacitor CM19. The other end of resistor RM3 is connected to the main control module 10. The other ends of capacitor CM19, capacitor CM21, capacitor CM1, and the GND pin of microphone UM1 are connected to the ground terminal. For example, when microphone module 21 is set to 2 groups, ensure that the spacing between microphone UM1 and microphone UM2 is uniform to form an effective microphone array. After installation, calibrate and debug the microphone array to ensure that its beamforming function works normally.

[0040] Furthermore, the user's voice is captured, amplified, and converted from analog to digital by microphones UM1 and UM2 (preferably MEMS microphones). The captured signal is then sent to the main control module 10 via the I2S communication protocol (PDM_D0, PDM_CLK) for feature extraction, post-processing, speech recognition, and command execution, thereby achieving voice control. Specifically:

[0041] 1) Sound signal acquisition and conversion

[0042] Sound energy harvesting: The front end of the MEMS microphone is equipped with a vibrating structure. When external sound is introduced, the air vibration causes the vibrating structure to generate mechanical vibration, which corresponds to the frequency and amplitude of the sound.

[0043] Capacitance Change: MEMS microphones use the capacitive sensing principle. The vibrating structure acts as one plate of a variable capacitor, forming a capacitance with the fixed plate. The vibration of the vibrating structure will change the distance between the two plates, thereby changing the capacitance value.

[0044] Electrical signal generation: By applying a bias voltage across a capacitor, the change in capacitance causes the movement of charge, thereby generating a weak analog electrical signal in the circuit that corresponds to the sound signal.

[0045] 2) Analog signal processing

[0046] Preamplifier: The generated weak analog electrical signal is first amplified by a preamplifier to increase the signal amplitude for subsequent processing;

[0047] Filtering: Using a filter to filter the amplified signal, removing high-frequency noise and other unwanted frequency components, making the signal purer.

[0048] 4) Analog-to-digital conversion

[0049] Sampling: The pre-processed analog signal is sampled at a certain sampling rate, that is, the amplitude of the analog signal is measured at regular time intervals. The sampling rate determines the time resolution of the sound signal. Common sampling rates include 44.1kHz and 48kHz.

[0050] Quantization: The amplitude of the sampled signal is quantized and converted into a finite number of discrete digital values. Quantization precision is usually expressed in bits, such as 16 bits, 24 bits, etc. The higher the number of bits, the higher the quantization precision and the better the reproduction of the original sound signal.

[0051] Encoding: The quantized digital values ​​are encoded according to a certain encoding format to form a digital audio signal for transmission on the I2S bus.

[0052] 5) I2S digital signal transmission

[0053] Clock synchronization: The I2S protocol has a bit clock (BCLK) and left and right channel clocks (LRCK). BCLK provides a clock reference for data transmission and determines the transmission time of each bit of data. LRCK is used to distinguish between left and right channel data, and its rising or falling edge marks the start of data transmission for one channel.

[0054] 6) SOC model processing

[0055] · Feature extraction

[0056] Frame-by-frame windowing: Divide the digital audio signal into short frames, each typically 20-30 milliseconds, and apply a windowing function to each frame to reduce spectral leakage and make the signal smoother in the time domain;

[0057] Extracting acoustic features: Commonly used features include Mel-frequency cepstral coefficients (MFCC) and linear predictive cepstral coefficients (LPCC), which can effectively characterize the features of speech signals for subsequent recognition and processing.

[0058] 7) Post-processing

[0059] Echo cancellation: When the TV plays sound, an echo may be generated. An echo cancellation algorithm is needed to remove the echo generated by the TV playing sound from the signal collected by the microphone module 21.

[0060] Noise reduction optimization: Based on the environmental noise level, further noise reduction algorithms are employed.

[0061] 8) Speech recognition

[0062] Acoustic model matching: The extracted acoustic features are matched with a pre-trained acoustic model, and the similarity between the feature vector and each acoustic unit such as phoneme and word in the model is calculated to find the most likely matching result.

[0063] Language model decoding: Combining the language model, the output of the acoustic model is decoded using the grammar, semantics and statistical laws of the language to obtain the final recognized text result.

[0064] 9) Instruction execution

[0065] Semantic understanding: Perform semantic analysis on the identified text to understand the user's intent, such as determining whether it is an operation to search for programs, adjust the volume, or change channels;

[0066] Control operation: Based on the semantic understanding results, the TV executes the corresponding operation instructions to complete the functions required by the user.

[0067] Reference Figure 1 and Figure 4 In some embodiments, the infrared remote control module 30 includes an infrared receiver IR1, resistors RM35-RM37, and capacitors CM16-CM18. The VCC terminal of the infrared receiver IR1 is connected to one end of resistor RM35, one end of capacitor CM16, and one end of capacitor CM17, respectively. The other end of resistor RM35 is connected to power supply 5VS and one end of resistor RM36, respectively. The IR pin of the infrared receiver IR1 is connected to the other end of resistor RM36 and one end of resistor RM37, respectively. The other end of resistor RM37 is connected to the main control module 10 and one end of capacitor CM18, respectively. The GND pin of the infrared receiver IR1, the other end of capacitor CM18, the other end of capacitor CM16, and the other end of capacitor CM17 are connected to the ground terminal. It can receive infrared remote control signals sent by the infrared remote control and transmit them to the main control module 10 for parsing, and then execute corresponding actions, such as page turning, volume adjustment, etc.

[0068] Reference Figure 1 and Figure 8In some embodiments, the first state indication module 40 includes a MOSFET QM1, LED chips DM2-DM5, resistors RM22-RM27, and capacitors CM9-CM12. The gate of MOSFET QM1 is connected to the main control module 10 via resistor RM23. The drain of MOSFET QM1 is connected to one end of resistor RM22, one end of resistor RM24, and the DIN pin of LED chip DM2. The VDD pin of LED chip DM2 is connected to power supply 5VS and one end of capacitor CM9. The DOUT pin of LED chip DM2 is connected to the DIN pin of LED chip DM3 and the other end of resistor RM24 via resistor RM25. The VDD pin of LED chip DM3 is connected to power supply 5VS and one end of capacitor CM10. The DOUT pin of LED chip DM3 is connected to the DIN pin of LED chip DM4 via resistor RM26. The VDD pin of LED chip DM4 is connected to power supply 5VS and capacitor CM12. One end of the circuit is connected to the LED chip DM5. The DOUT pin of LED chip DM4 is connected to the DIN pin of LED chip DM5 via resistor RM27. The VDD pin of LED chip DM5 is connected to the power supply 5VS and one end of capacitor CM12. The source of MOSFET QM1, the GND pins of LED chips DM2, DM3, DM4, and DM5, the other end of capacitors CM9, CM10, CM11, and CM12 are connected to the ground terminal. Specifically, the main control module 20 controls the conduction and cutoff of MOSFET QM1 by outputting high and low levels, thereby controlling the state of LED chips DM2-DM5. Different states of LED chips DM2-DM5 indicate the sound pickup status. For example, they flash during sound pickup; all lights are green after sound pickup is completed and recognition is successful; all lights are red after sound pickup is completed but recognition is unsuccessful.

[0069] Reference Figure 1 and Figure 5In some embodiments, a high-sensitivity far-field voice interaction TV control circuit further includes a mute button module 50 connected to the main control module 10. As a preferred embodiment of the mute button module 50, the mute button module 50 includes a button SW1, a bidirectional breakdown diode DM6, a transistor QM4, a MOSFET QM3, capacitors CM13 and CM15, resistors RM28, and resistors RM30-RM34. Pin 2 of button SW1 is connected to one end of resistor RM32 and one end of bidirectional breakdown diode DM6. The other end of resistor RM32 is connected to one end of capacitor CM15, one end of resistor RM34, one end of resistor RM30, and the base of transistor QM4. The other end of resistor RM34 is connected to a +3.3V power supply. The collector of transistor QM4 is connected to one end of resistor R28 and one end of resistor RM31. The other end of resistor RM31 is connected to the base of capacitor CM13. One end of the SW1 button is connected to the gate of the MOSFET QM3, the other end of the resistor RM28 is connected to the +3.3V power supply, the other end of the capacitor CM13 is connected to the source of the MOSFET QM3, the drain of the MOSFET QM3 is connected to MIC_PWR and one end of the resistor RM33, and pin 1 of the button SW1, the other end of the bidirectional breakdown diode DM6, the other end of the capacitor CM15, the other end of the resistor RM30, the emitter of the transistor QM4, and the other end of the resistor RM33 are connected to the ground terminal. Specifically, when the button SW1 is pressed, the level of the MIC_MUTE terminal is pulled low, which is then recognized by the main control module 10, which determines that the user needs to mute. At this time, the main control module 10 controls the conduction state of the transistor QM4 by outputting high and low levels, thereby cutting off the path between the power supply and the microphone array 20, that is, the MOSFET QM3 is turned off, the microphone array 20 loses power and cannot collect audio signals, thus disabling the voice recognition function.

[0070] Reference Figure 1 and Figure 9In some embodiments, a high-sensitivity far-field voice interaction TV control circuit further includes a second status indicator module 60 connected to the main control module 10, used to indicate a mute state. As a preferred embodiment of the second status indicator module 60, the second status indicator module 60 includes a resistor RM7, resistors RM40-RM41, a transistor QM2, and an LED chip DM1. The base of transistor QM2 is connected to the main control module via resistor RM40. The collector of transistor QM2 is connected to one end of resistor RM41 and one end of resistor RM7, respectively. The other end of resistor RM7 is connected to one end of LED chip DM1. The other end of resistor RM41 is connected to power supply 5VS. The other end of LED chip DM1 and the emitter of transistor QM2 are connected to ground. Specifically, the main control module 10 controls the on / off state of transistor QM2 by outputting high and low levels, thereby controlling the state of LED chip DM1. For example, when the voice recognition function is enabled, LED chip DM1 is lit; when the voice recognition function is disabled, LED chip DM1 is turned off.

[0071] Reference Figure 1 and Figure 7 In some embodiments, a highly sensitive far-field voice interactive TV control circuit also includes a power button module 70 connected to the main control module 10.

[0072] Reference Figure 1 and Figure 8 In some embodiments, a high-sensitivity far-field voice interaction TV control circuit further includes a third status indicator module 80 connected to the main control module 10 for indicating the power-on status. As a preferred embodiment of the third status indicator module 80, the third status indicator module 80 includes an LED chip DK1 and resistors RM38-RM39. One end of the LED chip DK1 is connected to the main control module 10 and one end of the resistor RM38 via the resistor RM39. The other end of the resistor RM38 is connected to the power supply 5VS, and the other end of the LED chip DK1 is connected to the ground terminal. When used in conjunction with the power-on button module 70, the LED chip DK1 is lit when the user turns on the TV via the power-on button module 70, and turns off when the user turns off the TV via the power-on button module 70.

[0073] The advantages of this invention are: the circuit described above can improve the ability to pick up weak sounds, enhance the target voice signal, suppress interference sounds from other directions, and realize far-field voice interaction function.

[0074] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A highly sensitive far-field voice interactive television control circuit, characterized in that: It includes a main control module (10), a microphone array (20), an infrared remote control module (30), and a first status indication module (40); The microphone array (20) is connected to the main control module (10) and is evenly distributed on the television screen to receive the user's voice control signals; The infrared remote control module (30) is connected to the main control module (10) and is used to receive infrared remote control signals; The first status indication module (40) is connected to the main control module (10) and is used to indicate the voice signal reception status; The main control module (10) can perform preset actions when it receives a voice control signal received by the pickup array (20) or a remote control signal received by the infrared remote control module (30).

2. The high-sensitivity far-field voice interaction television control circuit according to claim 1, characterized in that: The pickup array (20) includes at least two sets of microphone modules (21).

3. The high-sensitivity far-field voice interaction television control circuit according to claim 2, characterized in that: The microphone module (21) includes a microphone UM1, a capacitor CM1, a capacitor CM19, a capacitor CM21, resistors RM1-RM3 and a resistor RM5. One end of capacitor CM21 is connected to one end of capacitor CM1, one end of resistor RM1, the VDD pin of microphone UM1 and MIC_PWR. The other end of resistor RM1 is connected to one end of resistor RM5 and the L / R pin of microphone UM1. The DATA pin of microphone UM1 is connected to the main control module (10) via resistor RM2. The CLK pin of microphone UM1 is connected to one end of resistor RM3 and one end of capacitor CM19. The other end of resistor RM3 is connected to the main control module (10). The other ends of capacitor CM19, capacitor CM21, capacitor CM1 and the GND pin of microphone UM1 are connected to the ground terminal.

4. The high-sensitivity far-field voice interaction television control circuit according to claim 1, characterized in that: The infrared remote control module (30) includes an infrared receiver IR1, resistors RM35-RM37 and capacitors CM16-CM18. The VCC terminal of the infrared receiver IR1 is connected to one end of resistor RM35, one end of capacitor CM16 and one end of capacitor CM17 respectively. The other end of resistor RM35 is connected to power supply 5VS and one end of resistor RM36 respectively. The IR pin of the infrared receiver IR1 is connected to the other end of resistor RM36 and one end of resistor RM37 respectively. The other end of resistor RM37 is connected to the main control module (10) and one end of capacitor CM18 respectively. The GND pin of the infrared receiver IR1, the other end of capacitor CM18, the other end of capacitor CM16 and the other end of capacitor CM17 are connected to the ground terminal.

5. The high-sensitivity far-field voice interaction television control circuit according to claim 1, characterized in that: The first status indication module (40) includes a MOSFET QM1, LED chips DM2-DM5, resistors RM22-RM27, and capacitors CM9-CM12. The gate of MOSFET QM1 is connected to the main control module (10) via resistor RM23. The drain of MOSFET QM1 is connected to one end of resistor RM22, one end of resistor RM24, and the DIN pin of LED chip DM2. The VDD pin of LED chip DM2 is connected to power supply 5VS and one end of capacitor CM9. The DOUT pin of LED chip DM2 is connected to the DIN pin of LED chip DM3 and the other end of resistor RM24 via resistor RM25. The VDD pin of LED chip DM3 is connected to power supply 5VS and one end of capacitor CM10. The DOUT pin of LED chip DM3 is connected to the DIN pin of LED chip DM4 via resistor RM26. The VDD pin of LED chip DM4 is connected to power supply 5VS and one end of capacitor CM11. The DOUT pin of LED chip DM4 is connected to the DIN pin of LED chip DM5 via resistor RM27. The VDD pin of LED chip DM5 is connected to power supply 5VS and one end of capacitor CM12. The source of MOSFET QM1, the GND pins of LED chip DM2, DM3, DM4, and DM5, the other end of capacitor CM9, the other end of capacitor CM10, the other end of capacitor CM11, and the other end of capacitor CM12 are connected to the ground terminal.

6. The high-sensitivity far-field voice interaction television control circuit according to claim 1, characterized in that: It also includes a mute button module (50) connected to the main control module (10).

7. A high-sensitivity far-field voice interaction television control circuit according to claim 6, characterized in that: The mute button module (50) includes a button SW1, a bidirectional breakdown diode DM6, a transistor QM4, a MOSFET QM3, a capacitor CM13, a capacitor CM15, a resistor RM28, and resistors RM30-RM34. Pin 2 of button SW1 is connected to one end of resistor RM32 and one end of bidirectional breakdown diode DM6, respectively. The other end of resistor RM32 is connected to capacitor CM13 and CM15, respectively. One end of resistor RM15, one end of resistor RM34, one end of resistor RM30, and the base of transistor QM4 are connected. The other end of resistor RM34 is connected to the +3.3V power supply. The collector of transistor QM4 is connected to one end of resistor R28 and one end of resistor RM31. The other end of resistor RM31 is connected to one end of capacitor CM13 and the gate of MOSFET QM3. The other end of resistor RM28 is connected to the +3.3V power supply, the other end of capacitor CM13, and the source of MOSFET QM3. The drain of MOSFET QM3 is connected to MIC_PWR and one end of resistor RM33. Pin 1 of button SW1, the other end of bidirectional breakdown diode DM6, the other end of capacitor CM15, the other end of resistor RM30, the emitter of transistor QM4, and the other end of resistor RM33 are connected to the ground terminal.

8. A high-sensitivity far-field voice interaction television control circuit according to any one of claims 6-7, characterized in that: It also includes a second status indicator module (60) connected to the main control module (10) for indicating a silent state.

9. A high-sensitivity far-field voice interaction television control circuit according to claim 1, characterized in that: It also includes a power button module (70) connected to the main control module (10).

10. A high-sensitivity far-field voice interaction television control circuit according to claim 9, characterized in that: It also includes a third status indicator module (80) connected to the main control module (10) for indicating the power-on status.

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