Dual-mode bidirectional digital wireless microphone

Abstract

The utility model discloses a dual-mode bidirectional digital wireless microphone, which is applied to a wireless microphone and comprises an audio codec, an input end of which is used for accessing an audio signal output by the microphone; the output end of the first main control module is connected with the first wireless transceiver module; the first wireless transceiver module is wirelessly connected with the second wireless transceiver module; the second wireless transceiver module is connected with the second main control module; the second main control module is connected with the audio decoding module and the first playing device; the output end of the audio decoding module is connected with the second playing device. The noise-reduced audio signal can be output to the connected earphone, so that the problem that the volume is too large in some environments and time periods to disturb residents is avoided; meanwhile, the complexity of the dual-mode bidirectional digital wireless microphone of the wireless microphone is reduced, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of signal transmission, in particular to a dual-mode bidirectional digital wireless microphone. Background Art

[0002] In the existing technology, wireless microphones generally transmit audio in a one-way manner. Wireless microphones often transmit the microphone sound in a one-way manner to speakers for amplification and playback, or directly transmit it to smart TVs and then play it back from the TV speakers. In order to have a good experience, the volume will be relatively high. In certain environments and time periods, the excessive volume may cause nuisance to others. At the same time, the dual-mode two-way digital wireless microphones in the existing technology are relatively complex, resulting in high manufacturing costs. Utility Model Content

[0003] Based on this, it is necessary to propose a dual-mode bidirectional digital wireless microphone to address the above problems.

[0004] A dual-mode bidirectional digital wireless microphone, comprising:

[0005] An audio codec, whose input end is used to receive the audio signal output by the microphone, and encode the audio signal and output it to the first main control module;

[0006] The first main control module, whose output end is connected to the first wireless transceiver module, is used to receive the encoded audio signal and output the audio signal to the first wireless transceiver module and the audio codec after noise reduction; the audio codec is also used to receive the noise-reduced audio signal and output it to the connected headphones;

[0007] The first wireless transceiver module is wirelessly connected to the second wireless transceiver module, and is used to transmit the noise-reduced audio signal to the second wireless transceiver module;

[0008] The second wireless transceiver module is connected to the second main control module and is used to output the noise-reduced audio signal to the second main control module;

[0009] The second main control module is connected to the audio decoding module and the first playback device, and is used to output the audio signal to the audio decoding module after secondary noise reduction, and output it to the first playback device through the USB interface; the first playback device includes: an in-vehicle host, a smart TV and / or a computer;

[0010] The audio decoding module, whose output end is connected to the second playback device, is used to receive the audio signal after secondary noise reduction, and decode the audio signal and output it to the second playback device; the second playback device includes: speakers and / or speakers.

[0011] In one embodiment, the audio codec includes: an audio codec chip and a microphone interface;

[0012] The seventh pin of the audio codec chip, the eighth pin of the audio codec chip, the ninth pin of the audio codec chip, the tenth pin of the audio codec chip, the eleventh pin of the audio codec chip, the sixteenth pin of the audio codec chip, and the seventeenth pin of the audio codec chip are all connected to the first main control module;

[0013] The first pin of the microphone interface is connected to the twenty-ninth pin of the audio codec chip;

[0014] The second pin of the microphone interface is connected to the 30th pin of the audio encoding and decoding chip.

[0015] In one embodiment, the first main control module includes: a first main control chip, a first crystal oscillator, a first capacitor and a second capacitor;

[0016] The seventh pin of the first main control chip, the eighth pin of the first main control chip, the ninth pin of the first main control chip, the tenth pin of the first main control chip, the eleventh pin of the first main control chip, the eighteenth pin of the first main control chip, and the nineteenth pin of the first main control chip are all connected to the audio codec;

[0017] One end of the first crystal oscillator is connected to the 35th pin of the first main control chip, and the other end of the first crystal oscillator is connected to the 36th pin of the first main control chip;

[0018] One end of the first capacitor is connected to the thirty-fifth pin of the first main control chip, and the other end of the first capacitor is grounded;

[0019] One end of the second capacitor is connected to the thirty-sixth pin of the first main control chip, and the other end of the second capacitor is grounded.

[0020] In one embodiment, the first wireless transceiver module includes: a first wireless transceiver chip, a first inductor, a third capacitor, and a fourth capacitor;

[0021] The first pin of the first wireless transceiver chip, the second pin of the first wireless transceiver chip, the third pin of the first main control chip, the fourth pin of the first wireless transceiver chip, the fifth pin of the first wireless transceiver chip, and the sixth pin of the first wireless transceiver chip are all connected to the first main control module;

[0022] One end of the first inductor is connected to an external power supply, and the other end is connected to the seventh pin of the first wireless transceiver chip;

[0023] One end of the third capacitor is connected to the other end of the first inductor, and the other end of the third capacitor is connected;

[0024] One end of the fourth capacitor is connected in parallel with the third capacitor.

[0025] In one embodiment, the second wireless transceiver module includes: a second wireless transceiver chip, a second inductor, a fifth capacitor, and a sixth capacitor;

[0026] The first pin of the second wireless transceiver chip, the second pin of the second wireless transceiver chip, the third pin of the second wireless transceiver chip, the fourth pin of the second wireless transceiver chip, the fifth pin of the second wireless transceiver chip, and the sixth pin of the second wireless transceiver chip are all connected to the second main control module;

[0027] One end of the second inductor is connected to the external power supply, and the other end is connected to the seventh pin of the second wireless transceiver chip;

[0028] One end of the fifth capacitor is connected to the other end of the second inductor, and the other end of the fifth capacitor is connected;

[0029] One end of the sixth capacitor is connected in parallel with the fifth capacitor.

[0030] In one embodiment, the second main control module includes: a second main control chip, a second crystal oscillator, a seventh capacitor and an eighth capacitor;

[0031] The seventh pin of the second main control chip, the eighth pin of the second main control chip, the ninth pin of the second main control chip, the tenth pin of the second main control chip, the eleventh pin of the second main control chip, the eighteenth pin of the second main control chip, and the nineteenth pin of the second main control chip are all connected to the audio decoding module;

[0032] One end of the second crystal oscillator is connected to the 35th pin of the second main control chip, and the other end of the second crystal oscillator is connected to the 36th pin of the second main control chip;

[0033] One end of the eighth capacitor is connected to the thirty-fifth pin of the second main control chip, and the other end of the eighth capacitor is grounded;

[0034] One end of the seventh capacitor is connected to the thirty-sixth pin of the second main control chip, and the other end of the seventh capacitor is grounded.

[0035] In one embodiment, the audio decoding module includes: an audio decoding chip;

[0036] The seventh pin of the audio decoding chip, the eighth pin of the audio decoding chip, the ninth pin of the audio decoding chip, the tenth pin of the audio decoding chip, the eleventh pin of the audio decoding chip, the sixteenth pin of the audio decoding chip and the seventeenth pin of the audio decoding chip are all connected to the second main control module.

[0037] In one embodiment, the dual-mode bidirectional digital wireless microphone further includes:

[0038] a first indication module, connected to the output end of the first main control module, configured to receive a first control signal output by the first main control module and light up;

[0039] The second indication module is connected to the output end of the second main control module, and is used to receive the second control signal output by the second main control module and light up.

[0040] In one embodiment, the first indication module includes: a first light emitting diode, a second light emitting diode, a first resistor and a second resistor;

[0041] One end of the first resistor is connected to an external power supply, and the other end is connected to the anode of the first light emitting diode;

[0042] The cathode of the first resistor is connected to the first main control module;

[0043] One end of the second resistor is connected to the external power supply, and the other end is connected to the anode of the second light-emitting diode;

[0044] The cathode of the second light emitting diode is connected to the first main control module.

[0045] In one embodiment, the second indication module includes: a third light emitting diode, a fourth light emitting diode, a third resistor and a fourth resistor;

[0046] One end of the third resistor is connected to the external power supply, and the other end is connected to the anode of the third light emitting diode;

[0047] The cathode of the third light emitting diode is connected to the first main control module;

[0048] One end of the fourth resistor is connected to the external power supply, and the other end is connected to the anode of the fourth light-emitting diode;

[0049] The cathode of the fourth light emitting diode is connected to the second main control module.

[0050] The implementation of the present invention will have the following beneficial effects:

[0051] The present application receives the audio signal output by the microphone through an audio codec, encodes the audio signal, and outputs it to the first main control module; the first main control module receives the encoded audio signal, and outputs it to the first wireless transceiver module and the audio codec after noise reduction; the audio codec is also used to receive the noise-reduced audio signal and output it to the connected headphones; the first wireless transceiver module transmits the noise-reduced audio signal to the second wireless transceiver module; the second wireless transceiver module outputs the noise-reduced audio signal to the second main control module; the second main control module performs secondary noise reduction on the audio signal and outputs it to the audio decoding module, and outputs it to the first playback device via a USB interface; the audio decoding module receives the secondary noise-reduced audio signal, decodes the audio signal, and outputs it to the second playback device. This allows the noise-reduced audio signal to be output to the connected headphones, thereby avoiding the problem of excessive volume causing nuisance in certain environments and time periods; and at the same time, reduces the complexity of the dual-mode bidirectional digital wireless microphone and reduces manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0053] in:

[0054] Figure 1 is a structural block diagram of a dual-mode bidirectional digital wireless microphone in one embodiment;

[0055] Figure 2 is a circuit diagram of an audio codec in one embodiment;

[0056] Figure 3 is a circuit diagram of a first main control module in one embodiment;

[0057] Figure 4 is a circuit diagram of a first wireless transceiver module in one embodiment;

[0058] Figure 5 is a circuit diagram of a second wireless transceiver module in one embodiment;

[0059] Figure 6 is a circuit diagram of a second main control module in one embodiment;

[0060] Figure 7 is a circuit diagram of an audio decoding module in one embodiment;

[0061] Figure 8 is a circuit diagram of a first indication module in one embodiment;

[0062] Figure 9 FIG. 4 is a circuit diagram of a second indication module in one embodiment. DETAILED DESCRIPTION

[0063] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0064] In the prior art, wireless microphones generally transmit audio in one direction. Often, wireless microphones transmit the sound of the microphone to the speakers for amplification and playback, or directly transmit it to the smart TV and then play it back from the TV speakers. In order to have a good experience, the volume will be relatively high. In certain environments and time periods, the excessive volume will cause nuisance to the public. At the same time, the dual-mode bidirectional digital wireless microphones in the prior art are relatively complex, resulting in high manufacturing costs. In order to solve the above technical problems, the present application provides a dual-mode bidirectional digital wireless microphone, such as Figure 1As shown, it includes: an audio codec 10, a first main control module 20, a first wireless transceiver module 30, a second wireless transceiver module 40, a second main control module 50 and an audio decoding module 60, wherein the input end of the audio codec 10 is used to receive the audio signal output by the microphone, and encode the audio signal and output it to the first main control module 20; the output end of the first main control module 20 is connected to the first wireless transceiver module 30, for receiving the encoded audio signal, and outputting the audio signal to the first wireless transceiver module 30 and the audio codec 10 after noise reduction; the audio codec 10 is also used to receive the noise-reduced audio signal and output it to the connected headphones; the first wireless transceiver module 30 is wirelessly connected to the second wireless transceiver module 40, for The audio signal after noise reduction is transmitted to the second wireless transceiver module 40; the second wireless transceiver module 40 is connected to the second main control module 50, and is used to output the audio signal after noise reduction to the second main control module 50; the second main control module 50 is connected to the audio decoding module 60 and the first playback device, and is used to output the audio signal to the audio decoding module 60 after secondary noise reduction, and output it to the first playback device through the USB interface. The first playback device includes: a car host, a smart TV and / or a computer; the output end of the audio decoding module 60 is connected to the second playback device, and is used to receive the audio signal after secondary noise reduction, and decode the audio signal and output it to the second playback device. The second playback device includes: a speaker and / or a speaker. The present application receives the audio signal output by the microphone through an audio codec, encodes the audio signal, and outputs it to the first main control module; the first main control module receives the encoded audio signal, and outputs it to the first wireless transceiver module and the audio codec after noise reduction; the audio codec is also used to receive the noise-reduced audio signal and output it to the connected headphones; the first wireless transceiver module transmits the noise-reduced audio signal to the second wireless transceiver module; the second wireless transceiver module outputs the noise-reduced audio signal to the second main control module; the second main control module performs secondary noise reduction on the audio signal and outputs it to the audio decoding module, and outputs it to the first playback device via a USB interface; the audio decoding module receives the secondary noise-reduced audio signal, decodes the audio signal, and outputs it to the second playback device. This allows the noise-reduced audio signal to be output to the connected headphones, thereby avoiding the problem of excessive volume causing nuisance in certain environments and time periods; and at the same time, reduces the complexity of the dual-mode bidirectional digital wireless microphone and reduces manufacturing costs.

[0065] In one embodiment, Figure 2As shown, the audio codec 10 includes: an audio codec chip U4 and a microphone interface J4; wherein, the seventh pin 7 of the audio codec chip U4, the eighth pin 8 of the audio codec chip U4, the ninth pin 9 of the audio codec chip U4, the tenth pin 10 of the audio codec chip U4, the eleventh pin 11 of the audio codec chip U4, the sixteenth pin 16 of the audio codec chip U4 and the seventeenth pin 17 of the audio codec chip U4 are all connected to the first main control module 20; the first pin of the microphone interface J4 is connected to the twenty-ninth pin 29 of the audio codec chip U4; the second pin of the microphone interface J4 is connected to the thirtieth pin 30 of the audio codec chip U4.

[0066] In one embodiment, Figure 3 As shown, the first main control module 20 includes: a first main control chip U3, a first crystal oscillator component X2, a first capacitor C14 and a second capacitor C15; wherein the seventh pin 7 of the first main control chip U3, the eighth pin 8 of the first main control chip U3, the ninth pin 9 of the first main control chip U3, the tenth pin 10 of the first main control chip U3, the eleventh pin 11 of the first main control chip U3, the eighteenth pin 18 of the first main control chip U3 and the nineteenth pin 19 of the first main control chip U3 are all connected to the audio The encoder and decoder 10 are connected; one end of the first crystal oscillator component X2 is connected to the thirty-fifth pin 35 of the first main control chip U3, and the other end of the first crystal oscillator component X2 is connected to the thirty-sixth pin 36 of the first main control chip U3; one end of the first capacitor C14 is connected to the thirty-fifth pin 35 of the first main control chip U3, and the other end of the first capacitor C14 is grounded; one end of the second capacitor C15 is connected to the thirty-sixth pin 36 of the first main control chip U3, and the other end of the second capacitor C15 is grounded.

[0067] In one embodiment, Figure 4As shown, the first wireless transceiver module 30 includes: a first wireless transceiver chip MD2, a first inductor L2, a third capacitor C13 and a fourth capacitor C19; wherein, the first pin 1 of the first wireless transceiver chip MD2, the second pin 2 of the first wireless transceiver chip MD2, the third pin 3 of the first main control chip U3, the fourth pin 4 of the first wireless transceiver chip MD2, the fifth pin 5 of the first wireless transceiver chip MD2 and the sixth pin 6 of the first wireless transceiver chip MD2 are all connected to the first main control module 20; one end of the first inductor L2 is connected to the external power supply, and the other end is connected to the seventh pin 7 of the first wireless transceiver chip MD2; one end of the third capacitor C13 is connected to the other end of the first inductor L2, and the other end of the third capacitor C13 is connected; one end of the fourth capacitor C19 is connected in parallel with the third capacitor C13.

[0068] In one embodiment, Figure 5 As shown, the second wireless transceiver module 40 includes: a second wireless transceiver chip MD1, a second inductor L1, a fifth capacitor C5 and a sixth capacitor C4; wherein, the first pin 1 of the second wireless transceiver chip MD1, the second pin 2 of the second wireless transceiver chip MD1, the third pin 3 of the second wireless transceiver chip MD1, the fourth pin 4 of the second wireless transceiver chip MD1, the fifth pin 5 of the second wireless transceiver chip MD1 and the sixth pin 6 of the second wireless transceiver chip MD1 are all connected to the second main control module 50; one end of the second inductor L1 is connected to the external power supply, and the other end is connected to the seventh pin 7 of the second wireless transceiver chip MD1; one end of the fifth capacitor C5 is connected to the other end of the second inductor L1, and the other end of the fifth capacitor C5 is connected; one end of the sixth capacitor C4 is connected in parallel with the fifth capacitor C5.

[0069] In one embodiment, Figure 6As shown, the second main control module 50 includes: a second main control chip U1, a second crystal oscillator component X1, a seventh capacitor C8 and an eighth capacitor C7; wherein the seventh pin 7 of the second main control chip U1, the eighth pin 8 of the second main control chip U1, the ninth pin 9 of the second main control chip U1, the tenth pin 10 of the second main control chip U1, the eleventh pin 11 of the second main control chip U1, the eighteenth pin 18 of the second main control chip U1 and the nineteenth pin 19 of the second main control chip U1 are all connected to the The audio decoding module 60 is connected; one end of the second crystal oscillator component X1 is connected to the thirty-fifth pin 35 of the second main control chip U1, and the other end of the second crystal oscillator component X1 is connected to the thirty-sixth pin 36 of the second main control chip U1; one end of the eighth capacitor C7 is connected to the thirty-fifth pin 35 of the second main control chip U1, and the other end of the eighth capacitor C7 is grounded; one end of the seventh capacitor C8 is connected to the thirty-sixth pin 36 of the second main control chip U1, and the other end of the seventh capacitor C8 is grounded.

[0070] In one embodiment, Figure 7 As shown, the audio decoding module 60 includes: an audio decoding chip U2; wherein, the seventh pin 7 of the audio decoding chip U2, the eighth pin 8 of the audio decoding chip U2, the ninth pin 9 of the audio decoding chip U2, the tenth pin 10 of the audio decoding chip U2, the eleventh pin 11 of the audio decoding chip U2, the sixteenth pin 16 of the audio decoding chip U2 and the seventeenth pin 17 of the audio decoding chip U2 are all connected to the second main control module 50.

[0071] In one embodiment, Figure 1 As shown, the dual-mode bidirectional digital wireless microphone further includes: a first indication module 70 and a second indication module 80, wherein the first indication module 70 is connected to the output end of the first main control module 20, for receiving the first control signal output by the first main control module 20 and lighting up; the second indication module 80 is connected to the output end of the second main control module 50, for receiving the second control signal output by the second main control module 50 and lighting up.

[0072] In one embodiment, Figure 8As shown, the first indication module 70 includes: a first light-emitting diode D6, a second light-emitting diode D8, a first resistor R51 and a second resistor R50; wherein, one end of the first resistor R51 is connected to the external power supply, and the other end is connected to the anode of the first light-emitting diode D6; the cathode of the first resistor R51 is connected to the first main control module 20; one end of the second resistor R50 is connected to the external power supply, and the other end is connected to the anode of the second light-emitting diode D8; the cathode of the second light-emitting diode D8 is connected to the first main control module 20.

[0073] In one embodiment, Figure 9 As shown, the second indication module 80 includes: a third light-emitting diode D4, a fourth light-emitting diode D5, a third resistor R53 and a fourth resistor R66; wherein, one end of the third resistor R53 is connected to the external power supply, and the other end is connected to the anode of the third light-emitting diode D4; the cathode of the third light-emitting diode D4 is connected to the first main control module 20; one end of the fourth resistor R66 is connected to the external power supply, and the other end is connected to the anode of the fourth light-emitting diode D5; the cathode of the fourth light-emitting diode D5 is connected to the second main control module 50.

[0074] The present application receives the audio signal output by the microphone through an audio codec, encodes the audio signal, and outputs it to the first main control module; the first main control module receives the encoded audio signal, and outputs it to the first wireless transceiver module and the audio codec after noise reduction; the audio codec is also used to receive the noise-reduced audio signal and output it to the connected headphones; the first wireless transceiver module transmits the noise-reduced audio signal to the second wireless transceiver module; the second wireless transceiver module outputs the noise-reduced audio signal to the second main control module; the second main control module performs secondary noise reduction on the audio signal and outputs it to the audio decoding module, and outputs it to the first playback device via a USB interface; the audio decoding module receives the secondary noise-reduced audio signal, decodes the audio signal, and outputs it to the second playback device. This allows the noise-reduced audio signal to be output to the connected headphones, thereby avoiding the problem of excessive volume causing nuisance in certain environments and time periods; and at the same time, reduces the complexity of the dual-mode bidirectional digital wireless microphone and reduces manufacturing costs.

[0075] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A dual-mode bidirectional digital wireless microphone, characterized in that: include: An audio codec, whose input end is used to receive the audio signal output by the microphone, and encode the audio signal and output it to the first main control module; The first main control module, whose output end is connected to the first wireless transceiver module, is used to receive the encoded audio signal and output the audio signal to the first wireless transceiver module and the audio codec after noise reduction; the audio codec is also used to receive the noise-reduced audio signal and output it to the connected headphones; The first wireless transceiver module is wirelessly connected to the second wireless transceiver module, and is used to transmit the noise-reduced audio signal to the second wireless transceiver module; The second wireless transceiver module is connected to the second main control module and is used to output the noise-reduced audio signal to the second main control module; The second main control module is connected to the audio decoding module and the first playback device, and is used to output the audio signal to the audio decoding module after secondary noise reduction, and output it to the first playback device through the USB interface. The first playback device includes: an in-vehicle host, a smart TV and / or a computer; The audio decoding module, whose output end is connected to the second playback device, is used to receive the audio signal after secondary noise reduction, and decode the audio signal and output it to the second playback device; the second playback device includes: speakers and / or speakers.

2. The dual-mode bidirectional digital wireless microphone according to claim 1, characterized in that: The audio codec includes: an audio codec chip and a microphone interface; The seventh pin of the audio codec chip, the eighth pin of the audio codec chip, the ninth pin of the audio codec chip, the tenth pin of the audio codec chip, the eleventh pin of the audio codec chip, the sixteenth pin of the audio codec chip, and the seventeenth pin of the audio codec chip are all connected to the first main control module; The first pin of the microphone interface is connected to the twenty-ninth pin of the audio codec chip; The second pin of the microphone interface is connected to the 30th pin of the audio encoding and decoding chip.

3. The dual-mode bidirectional digital wireless microphone according to claim 1, characterized in that: The first main control module includes: a first main control chip, a first crystal oscillator component, a first capacitor and a second capacitor; The seventh pin of the first main control chip, the eighth pin of the first main control chip, the ninth pin of the first main control chip, the tenth pin of the first main control chip, the eleventh pin of the first main control chip, the eighteenth pin of the first main control chip, and the nineteenth pin of the first main control chip are all connected to the audio codec; One end of the first crystal oscillator is connected to the 35th pin of the first main control chip, and the other end of the first crystal oscillator is connected to the 36th pin of the first main control chip; One end of the first capacitor is connected to the thirty-fifth pin of the first main control chip, and the other end of the first capacitor is grounded; One end of the second capacitor is connected to the thirty-sixth pin of the first main control chip, and the other end of the second capacitor is grounded.

4. The dual-mode bidirectional digital wireless microphone according to claim 3, characterized in that: The first wireless transceiver module includes: a first wireless transceiver chip, a first inductor, a third capacitor and a fourth capacitor; The first pin of the first wireless transceiver chip, the second pin of the first wireless transceiver chip, the third pin of the first main control chip, the fourth pin of the first wireless transceiver chip, the fifth pin of the first wireless transceiver chip, and the sixth pin of the first wireless transceiver chip are all connected to the first main control module; One end of the first inductor is connected to an external power supply, and the other end is connected to the seventh pin of the first wireless transceiver chip; One end of the third capacitor is connected to the other end of the first inductor, and the other end of the third capacitor is connected; One end of the fourth capacitor is connected in parallel with the third capacitor.

5. The dual-mode bidirectional digital wireless microphone according to claim 1, characterized in that: The second wireless transceiver module includes: a second wireless transceiver chip, a second inductor, a fifth capacitor and a sixth capacitor; The first pin of the second wireless transceiver chip, the second pin of the second wireless transceiver chip, the third pin of the second wireless transceiver chip, the fourth pin of the second wireless transceiver chip, the fifth pin of the second wireless transceiver chip, and the sixth pin of the second wireless transceiver chip are all connected to the second main control module; One end of the second inductor is connected to the external power supply, and the other end is connected to the seventh pin of the second wireless transceiver chip; One end of the fifth capacitor is connected to the other end of the second inductor, and the other end of the fifth capacitor is connected; One end of the sixth capacitor is connected in parallel with the fifth capacitor.

6. The dual-mode bidirectional digital wireless microphone according to claim 1, characterized in that: The second main control module includes: a second main control chip, a second crystal oscillator component, a seventh capacitor and an eighth capacitor; The seventh pin of the second main control chip, the eighth pin of the second main control chip, the ninth pin of the second main control chip, the tenth pin of the second main control chip, the eleventh pin of the second main control chip, the eighteenth pin of the second main control chip, and the nineteenth pin of the second main control chip are all connected to the audio decoding module; One end of the second crystal oscillator is connected to the 35th pin of the second main control chip, and the other end of the second crystal oscillator is connected to the 36th pin of the second main control chip; One end of the eighth capacitor is connected to the thirty-fifth pin of the second main control chip, and the other end of the eighth capacitor is grounded; One end of the seventh capacitor is connected to the thirty-sixth pin of the second main control chip, and the other end of the seventh capacitor is grounded.

7. The dual-mode bidirectional digital wireless microphone according to claim 1, characterized in that: The audio decoding module includes: an audio decoding chip; The seventh pin of the audio decoding chip, the eighth pin of the audio decoding chip, the ninth pin of the audio decoding chip, the tenth pin of the audio decoding chip, the eleventh pin of the audio decoding chip, the sixteenth pin of the audio decoding chip and the seventeenth pin of the audio decoding chip are all connected to the second main control module.

8. The dual-mode bidirectional digital wireless microphone according to claim 1, characterized in that: Also includes: a first indication module, connected to the output end of the first main control module, configured to receive a first control signal output by the first main control module and light up; The second indication module is connected to the output end of the second main control module, and is used to receive the second control signal output by the second main control module and light up.

9. The dual-mode bidirectional digital wireless microphone according to claim 8, characterized in that: The first indication module includes: a first light emitting diode, a second light emitting diode, a first resistor and a second resistor; One end of the first resistor is connected to an external power supply, and the other end is connected to the anode of the first light emitting diode; The cathode of the first resistor is connected to the first main control module; One end of the second resistor is connected to the external power supply, and the other end is connected to the anode of the second light-emitting diode; The cathode of the second light emitting diode is connected to the first main control module.

10. The dual-mode bidirectional digital wireless microphone according to claim 8, characterized in that: The second indication module includes: a third light emitting diode, a fourth light emitting diode, a third resistor and a fourth resistor; One end of the third resistor is connected to the external power supply, and the other end is connected to the anode of the third light emitting diode; The cathode of the third light emitting diode is connected to the first main control module; One end of the fourth resistor is connected to the external power supply, and the other end is connected to the anode of the fourth light-emitting diode; The cathode of the fourth light emitting diode is connected to the second main control module.

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