Wireless microphone and operating method thereof

Abstract

The present invention relates to the field of audio acquisition circuit technology, and its purpose is to provide a wireless microphone and an operating method thereof. The wireless microphone includes an audio transmitting module and an audio receiving module. The audio transmitting module includes a first audio processing module, an audio acquisition module, and a monitoring module, each electrically connected to the first audio processing module. The audio receiving module includes a second audio processing module, and a background audio receiving module and an audio output module, each electrically connected to the second audio processing module. The first audio processing module and the second audio processing module are communicatively connected. The present invention can simultaneously monitor a user's voice and background sounds, achieving excellent monitoring effects and enhancing the user's monitoring experience.

Description

Technical Field

[0001] The present invention relates to the technical field of audio acquisition circuits, and in particular to a wireless microphone and a working method thereof. Background Art

[0002] Wireless microphones are widely used in places such as stages and podiums. They are usually composed of several pocket transmitters and a centralized receiver. Each pocket transmitter has a different operating frequency. The centralized receiver can simultaneously receive voice signals of different operating frequencies emitted by each pocket transmitter.

[0003] In the prior art, such as the wireless microphone disclosed in publication number CN204334883U, during use, the user's voice can be collected by the transmitting end of the wireless microphone, and then wirelessly output to the receiving end for audio synthesis, etc., and finally amplified by the speaker so that the audience can hear the user's voice at a longer distance.

[0004] However, while using the existing technology, the inventors discovered at least the following problems: It is incapable of monitoring the user's voice. Wireless microphones that monitor the user's voice are available in the prior art. When monitoring the user's voice is required, this is typically accomplished through an earphone monitor electrically connected to a transmitter. However, the existing technology can only monitor the user's voice, but cannot simultaneously monitor background sounds such as accompaniment, resulting in poor monitoring performance. Summary of the Invention

[0005] In order to solve the above technical problems at least to a certain extent, the present invention provides a wireless microphone and a working method thereof.

[0006] The technical solution adopted in the present invention is:

[0007] In a first aspect, the present invention discloses a wireless microphone, comprising an audio transmitting module and an audio receiving module, wherein the audio transmitting module comprises a first audio processing module and an audio acquisition module and a monitoring module respectively electrically connected to the first audio processing module, the audio receiving module comprises a second audio processing module and a background audio receiving module and an audio output module respectively electrically connected to the second audio processing module, and the first audio processing module and the second audio processing module are communicatively connected;

[0008] The audio acquisition module is used to collect the calling audio signal and send it to the first audio processing module;

[0009] The first audio processing module is used to process the calling audio signal after receiving it, and send the processed calling audio signal to the second audio processing module and the monitoring module respectively, so that the second audio processing module outputs the calling audio signal through the audio output module;

[0010] The background audio receiving module is used to obtain the background audio signal and send the background audio signal to the monitoring module through the second audio processing module and the first audio processing module in sequence;

[0011] The monitoring module is used to receive and output the processed calling audio signal and the background audio signal.

[0012] In one possible design, the first audio processing module and / or the second audio processing module uses an HTQ653 audio processing chip and its peripheral circuits.

[0013] In one possible design, the audio acquisition module includes an audio amplifier chip, a fifth resistor, an eighth capacitor, a ninth capacitor, a seventh resistor, a twelfth capacitor, a thirteenth capacitor, a tenth resistor, a sixth resistor, a tenth capacitor, a fourth resistor and a sixth capacitor. The audio amplifier chip uses an operational amplifier; the inverting input terminal of the audio amplifier chip is electrically connected to the interactive interface through the fifth resistor and the eighth capacitor as an audio acquisition pin in sequence, the junction point of the fifth resistor and the eighth capacitor is grounded through the ninth capacitor, the non-inverting input terminal of the audio amplifier chip is electrically connected to the power supply module through the seventh resistor, the non-inverting input terminal of the audio amplifier chip is also grounded through the twelfth capacitor, the thirteenth capacitor and the tenth resistor respectively, the inverting input terminal of the audio amplifier chip is also electrically connected to its output terminal through the sixth resistor, the tenth capacitor is connected in parallel with the sixth resistor, and the output terminal of the audio amplifier chip is electrically connected to the first audio processing module through the fourth resistor and the sixth capacitor as an audio output pin in sequence.

[0014] In one possible design, the monitoring module includes an audio power amplifier, a twenty-seventh capacitor, a thirteenth resistor, a twelfth resistor, a twenty-sixth capacitor, a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, a thirty-first capacitor, an eighteenth resistor, a thirty-fourth capacitor, a nineteenth resistor and a twentieth resistor, and the audio power amplifier adopts an LPA4722 audio power amplifier; the 14th pin of the audio power amplifier is electrically connected to the first audio processing module as a left channel audio input pin through the thirteenth resistor and the twenty-seventh capacitor in sequence, the 14th pin of the audio power amplifier is also electrically connected to the 12th pin of the audio power amplifier through the twelfth resistor, and the 15th pin of the audio power amplifier is electrically connected to the 14th resistor in sequence as a left channel audio input pin of the audio power amplifier. and the twenty-sixth capacitor is grounded, pin 15 of the audio power amplifier is also grounded through the fifteenth resistor, and pin 12 of the audio power amplifier is electrically connected to the interactive interface as a left channel audio output pin; pin 8 of the audio power amplifier is electrically connected to the first audio processing module as a right channel audio input pin through the nineteenth resistor and the thirty-fourth capacitor in sequence, pin 8 of the audio power amplifier is also electrically connected to pin 10 of the audio power amplifier through the twentieth resistor, pin 7 of the audio power amplifier is also grounded through the eighteenth resistor and the thirty-first capacitor in sequence, pin 7 of the audio power amplifier is grounded through the sixteenth resistor, and pin 10 of the audio power amplifier is electrically connected to the interactive interface as a right channel audio output pin.

[0015] In one possible design, the audio emission module also includes a sound effect adjustment module, which includes a mixing control module, a volume increase module, a volume reduction module and / or a sound change module, and the mixing control module, volume increase module, volume reduction module and / or sound change module are electrically connected to the first audio processing module.

[0016] In one possible design, the sound effect adjustment module includes a mixing control module, a volume increase module, a volume decrease module and a voice change module. The mixing control module includes a mixing control button with one end grounded and the other end electrically connected to the first audio processing module through a 30th resistor. The volume increase module includes a volume increase control button with one end grounded and the other end electrically connected to the first audio processing module through a 31st resistor. The volume decrease module includes a volume decrease control button with one end grounded and the other end electrically connected to the first audio processing module through a 32nd resistor. The voice change module includes a voice change control button with one end grounded and the other end electrically connected to the first audio processing module through a 33rd resistor.

[0017] In one possible design, the wireless microphone also includes a power supply module, which is used to provide power support to the audio transmitting module and / or the audio receiving module; the power supply module includes a charging and discharging module, a switching module and a voltage stabilizing module that are electrically connected in sequence, the output end of the voltage stabilizing module is electrically connected to each module in the audio transmitting module and / or each module in the audio receiving module, and the controlled end of the switching module is electrically connected to the first audio processing module and / or the second audio processing module.

[0018] In one possible design, the charge and discharge module includes a charging interface, a lithium battery charging management chip electrically connected to the charging interface, and a battery interface electrically connected to the lithium battery charging management chip. The battery interface is also electrically connected to a charge and discharge switching module. The controlled end of the charge and discharge switching module is electrically connected to the first audio processing module and / or the second audio processing module, and the output end of the charge and discharge switching module is electrically connected to the voltage stabilizing module through the switch module.

[0019] In a second aspect, the present invention discloses a method for operating a wireless microphone as described in any one of the above items, comprising:

[0020] The audio collection module collects the calling audio signal and sends it to the first audio processing module;

[0021] The background audio receiving module obtains the background audio signal, and sends the background audio signal to the first audio processing module in sequence through the second audio processing module;

[0022] The first audio processing module receives and processes the calling audio signal input by the audio acquisition module in real time, and receives the background audio signal input by the background audio receiving module in real time;

[0023] The first audio processing module sends the processed calling audio signal to the audio output module through the second audio processing module, so that the audio output module outputs the processed calling audio signal;

[0024] The first audio processing module sends the processed calling audio signal and the background audio signal to the monitoring module.

[0025] The beneficial effect of the present invention is mainly reflected in that it can realize the simultaneous monitoring of the user's speaking voice and background sound. Specifically, during the implementation of the present invention, the calling audio signal emitted by the user is first collected by the audio collection module and sent to the first audio processing module, and then the calling audio signal is processed by the first audio processing module, and then the processed calling audio signal is sent to the second audio processing module, so that the second audio processing module outputs the calling audio signal through the audio output module; in this process, the first audio processing module can also send the processed calling audio signal to the monitoring module, and the background audio receiving module can also send the acquired background audio signal to the monitoring module through the second audio processing module and the first audio processing module in sequence, so that the monitoring module can simultaneously output the processed calling audio signal and the background audio signal, thereby facilitating the user himself or other monitoring users to monitor the user's speaking voice and background sound at the same time, with good monitoring effect, which is conducive to improving the user's monitoring experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a control block diagram of the wireless microphone in the present invention;

[0027] Figure 2 is a circuit diagram of the first audio processing module in the present invention;

[0028] Figure 3 This is a circuit diagram of the audio acquisition module in the present invention;

[0029] Figure 4 It is a circuit schematic diagram of the monitoring module and interactive interface in the present invention;

[0030] Figure 5 This is a circuit diagram of the sound effect adjustment module in the present invention;

[0031] Figure 6 is a circuit diagram of the second audio processing module in the present invention;

[0032] Figure 7 It is a circuit diagram of the background audio receiving module and the audio output module in the present invention;

[0033] Figure 8 This is a circuit diagram of the work indication module in the present invention;

[0034] Figure 9 This is a circuit diagram of the first charging interface in the present invention;

[0035] Figure 10 This is a circuit diagram of the first lithium battery charging management chip in the present invention;

[0036] Figure 11This is a circuit schematic diagram of the first charge-discharge switching module and the first battery interface in the present invention;

[0037] Figure 12 is a circuit schematic diagram of the first switch module in the present invention;

[0038] Figure 13 This is a circuit diagram of the first voltage stabilizing module in the present invention;

[0039] Figure 14 It is a flow chart of the working method of the wireless microphone in the present invention. DETAILED DESCRIPTION

[0040] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0041] It should be understood that although the terms "first," "second," etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are merely used to distinguish one element from another. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of the exemplary embodiments of the present invention.

[0042] It should be understood that the term "and / or" that may appear in this document is merely a description of the association relationship between associated objects, indicating that three relationships may exist. For example, A and / or B may mean: A exists alone, B exists alone, and A and B exist at the same time.

[0043] It will be understood that when an element is referred to herein as being “connected,” “connected,” or “coupled” to another element, it can be directly connected or coupled to the other element or intervening elements may be present.

[0044] It should be understood that the terms used herein are used only to describe specific embodiments and are not intended to limit the exemplary embodiments of the present invention. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that when the terms "comprise," "include," "include," and / or "comprising" are used herein, they specify the presence of the stated features, integers, steps, operations, units, and / or components, and do not preclude the presence or addition of one or more other features, numbers, steps, operations, units, components, and / or combinations thereof.

[0045] Example 1:

[0046] This embodiment provides a wireless microphone, such as Figure 1As shown, it includes an audio transmitting module and an audio receiving module, the audio transmitting module includes a first audio processing module and an audio acquisition module and a monitoring module electrically connected to the first audio processing module respectively, the audio receiving module includes a second audio processing module and a background audio receiving module and an audio output module electrically connected to the second audio processing module respectively, and the first audio processing module and the second audio processing module are communicatively connected;

[0047] The audio acquisition module is used to collect the calling audio signal and send it to the first audio processing module;

[0048] The first audio processing module is used to process the calling audio signal after receiving it, and send the processed calling audio signal to the second audio processing module and the monitoring module respectively, so that the second audio processing module outputs the calling audio signal through the audio output module;

[0049] The background audio receiving module is used to obtain the background audio signal and send the background audio signal to the monitoring module through the second audio processing module and the first audio processing module in sequence;

[0050] The monitoring module is used to receive and output the processed calling audio signal and the background audio signal.

[0051] This embodiment can realize simultaneous monitoring of the user's speaking voice and background sound. Specifically, during the implementation of this embodiment, the calling audio signal emitted by the user is first collected by the audio collection module and sent to the first audio processing module, and then the calling audio signal is processed by the first audio processing module, and then the processed calling audio signal is sent to the second audio processing module, so that the second audio processing module outputs the calling audio signal through the audio output module; in this process, the first audio processing module can also send the processed calling audio signal to the monitoring module, and the background audio receiving module can also send the acquired background audio signal to the monitoring module through the second audio processing module and the first audio processing module in sequence, so that the monitoring module can simultaneously output the processed calling audio signal and the background audio signal, thereby facilitating the user or other monitoring users to monitor the user's speaking voice and background sound at the same time, with good monitoring effect, which is conducive to improving the user's monitoring experience.

[0052] In this embodiment, the first audio processing module and / or the second audio processing module adopts an HTQ653 audio processing chip and its peripheral circuits.

[0053] Specifically, the circuit schematic diagram of the first audio processing module is as follows: Figure 2As shown, it uses the HTQ653 audio processing chip and its peripheral circuits to receive and process the calling audio signal, and also to receive the background audio signal input by the second audio module. The circuit schematic diagram of the second audio processing module is shown in FIG. Figure 6 As shown, it also adopts the HTQ653 audio processing chip and its peripheral circuits, which are used to receive the background audio signal received by the background sound receiving module and send it to the monitoring module through the first audio processing module.

[0054] In this embodiment, Figure 3 As shown, the audio acquisition module includes an audio amplifier chip U1, a fifth resistor R5, an eighth capacitor C8, a ninth capacitor C9, a seventh resistor R7, a twelfth capacitor C12, a thirteenth capacitor C13, a tenth resistor R10, a sixth resistor R6, a tenth capacitor C10, a fourth resistor R4 and a sixth capacitor C6. The audio amplifier chip U1 adopts an SGM721 operational amplifier; the inverting input terminal of the audio amplifier chip U1 is electrically connected to the interactive interface J1 through the fifth resistor R5 and the eighth capacitor C8 as the audio acquisition pin in sequence. The combination of the fifth resistor R5 and the eighth capacitor C8 The non-inverting input terminal of the audio amplifier chip U1 is electrically connected to the power module through the seventh resistor R7. The non-inverting input terminal of the audio amplifier chip U1 is also electrically connected to the power module through the twelfth capacitor C12, the thirteenth capacitor C13, and the tenth resistor R10. The inverting input terminal of the audio amplifier chip U1 is also electrically connected to its output terminal through the sixth resistor R6. The tenth capacitor C10 is connected in parallel with the sixth resistor R6. The output terminal of the audio amplifier chip U1 is electrically connected to the first audio processing module as an audio output pin through the fourth resistor R4 and the sixth capacitor C6. It should be understood that the power input terminal of the audio amplifier chip U1 is electrically connected to the power module, the power input terminal of the audio amplifier chip U1 is also grounded through the seventh capacitor C7, and the power output terminal of the audio amplifier chip U1 is grounded. The junction point of the eighth capacitor C8 and the interactive interface J1 is electrically connected to the power module through the third resistor R3 and the first resistor R1, respectively. The junction point of the third resistor R3 and the first resistor R1 is grounded through the first capacitor C1 and the second capacitor C2.

[0055] It should be noted that the audio acquisition module collects the calling audio signal sent by the user through the interactive interface J1, then amplifies it, and then outputs the amplified calling audio signal to the first audio processing module for processing, so that the first audio processing module can process the amplified calling audio signal, and then send the processed calling audio signal to the monitoring module and the second audio processing module of the audio receiving module respectively. It should be understood that the first audio processing module can but is not limited to mixing, reducing the volume, amplifying the volume or changing the voice of the amplified calling audio signal. Specifically, the user can adjust the first audio processing module to adjust and control the amplified calling audio signal through the sound effect adjustment module, which is not elaborated here.

[0056] In this embodiment, the circuit schematic diagram of the monitoring module and the interactive interface is as follows: Figure 4As shown, specifically, the monitoring module includes an audio power amplifier U4, a twenty-seventh capacitor C27, a thirteenth resistor R13, a twelfth resistor R12, a twenty-sixth capacitor C26, a fourteenth resistor R14, a fifteenth resistor R15, a sixteenth resistor R16, a thirty-first capacitor C31, an eighteenth resistor R18, a thirty-fourth capacitor C34, a nineteenth resistor R19 and a twentieth resistor R20, and the audio power amplifier U4 adopts an LPA4722 audio power amplifier; the 14th pin of the audio power amplifier U4 is electrically connected to the first audio processing module as a left channel audio input pin through the thirteenth resistor R13 and the twenty-seventh capacitor C27 in sequence, the 14th pin of the audio power amplifier U4 is also electrically connected to the 12th pin of the audio power amplifier U4 through the twelfth resistor R12, and the 15th pin of the audio power amplifier U4 is electrically connected to the 10th pin The fourth resistor R14 and the twenty-sixth capacitor C26 are grounded, and the 15th pin of the audio power amplifier U4 is also grounded through the fifteenth resistor R15. The 12th pin of the audio power amplifier U4 is electrically connected to the interactive interface J1 as a left channel audio output pin; the 8th pin of the audio power amplifier U4 is electrically connected to the first audio processing module as a right channel audio input pin through the nineteenth resistor R19 and the thirty-fourth capacitor C34 in sequence, the 8th pin of the audio power amplifier U4 is also electrically connected to the 10th pin of the audio power amplifier U4 through the 20th resistor R20, the 7th pin of the audio power amplifier U4 is also grounded through the eighteenth resistor R18 and the thirty-first capacitor C31 in sequence, the 7th pin of the audio power amplifier U4 is grounded through the sixteenth resistor R16, and the 10th pin of the audio power amplifier U4 is electrically connected to the interactive interface J1 as a right channel audio output pin. In this embodiment, pin 1 of the audio power amplifier U4 is electrically connected to the power module, pin 1, pin 9 and pin 13 of the audio power amplifier U4 are grounded through the twenty-first capacitor C21 and the twenty-second capacitor C22 respectively, pin 3 and pin 6 of the audio power amplifier U4 are both grounded, pin 16 of the audio power amplifier U4 is grounded through the twenty-first resistor R21, pin 2 of the audio power amplifier U4 is electrically connected to its pin 4 through the thirtieth capacitor C31, pin 11 of the audio power amplifier U4 is grounded through the twenty-ninth capacitor C29, pin 5 of the audio power amplifier U4 is grounded through the thirty-second capacitor C32, and pin 11 of the audio power amplifier U4 is also electrically connected to its pin 5 through the seventeenth resistor.

[0057] Specifically, in this embodiment, the monitoring module includes a left-channel audio amplification module and a right-channel audio amplification module, wherein the left-channel audio amplification module receives the left-channel audio signal output by the first audio processing module through the left-channel audio input pin, amplifies it, and then outputs the amplified left-channel audio signal to the interactive interface through the left-channel audio output pin; the right-channel audio amplification module receives the right-channel audio signal output by the first audio processing module through the right-channel audio input pin, amplifies it, and then outputs the amplified right-channel audio signal to the interactive interface through the right-channel audio output pin; the setting of the left-channel audio amplification module and the right-channel audio amplification module can facilitate the amplification and output of the left and right audio channels, facilitate the presentation of stereo sound effects, and help enhance the user's monitoring experience.

[0058] It should be noted that the interactive interface J1 electrically connected to the audio acquisition module and the interactive interface J1 electrically connected to the monitoring module can be configured as the same interface or separately. In this embodiment, the interactive interface J1 electrically connected to the audio acquisition module and the interactive interface J1 electrically connected to the monitoring module are configured as the same interface to reduce peripheral connectors and simplify the wireless microphone peripheral. Specifically, the interactive interface J1 is used to assemble a terminal that integrates audio acquisition and audio monitoring, such as a terminal that integrates audio reception and audio playback, and is not limited here.

[0059] In this embodiment, the audio emission module also includes a sound effect adjustment module, which includes a mixing control module, a volume increase module, a volume reduction module and / or a voice change module, and the mixing control module, volume increase module, volume reduction module and / or voice change module are electrically connected to the first audio processing module.

[0060] like Figure 5 As shown, the sound effect adjustment module includes a mixing control module, a volume increase module, a volume decrease module, and a voice change module. The mixing control module includes a mixing control button SW2 with one end grounded and the other end electrically connected to the first audio processing module via a 30th resistor R30. The volume increase module includes a volume increase control button SW3 with one end grounded and the other end electrically connected to the first audio processing module via a 31st resistor R31. The volume decrease module includes a volume decrease control button SW4 with one end grounded and the other end electrically connected to the first audio processing module via a 32nd resistor R32. The voice change module includes a voice change control button SW5 with one end grounded and the other end electrically connected to the first audio processing module via a 33rd resistor R33. During use, the user can operate the corresponding control buttons in the mixing control module, the volume increase module, the volume decrease module, and / or the voice change module to enable the first audio processing module to control mixing, volume reduction, volume amplification, or voice change of the amplified calling audio signal.

[0061] In this embodiment, the circuit schematic diagram of the background audio receiving module and the audio output module is as follows: Figure 7 As shown, the background audio receiving module is implemented by the background sound receiving interface U8. The background sound receiving interface U8 can be but not limited to a Type-C interface to facilitate connection with user terminals such as mobile phones for playing background sounds such as accompaniment. The audio output module is implemented by the audio output interface U9. The audio output interface U9 can be but not limited to an RJ45 headphone interface to facilitate output of the processed calling audio signal.

[0062] like Figure 8 Shown is the circuit schematic diagram of the working indication module, which is used to provide working instructions for the audio receiving module.

[0063] In this embodiment, the wireless microphone further includes a power module, which is used to provide power support to the audio transmitting module and / or the audio receiving module; the power module includes a charging and discharging module, a switching module, and a voltage stabilizing module electrically connected in sequence, the output end of the voltage stabilizing module being electrically connected to each module in the audio transmitting module and / or each module in the audio receiving module, and the controlled end of the switching module being electrically connected to the first audio processing module and / or the second audio processing module. It should be noted that the charging and discharging module, as an energy supply unit, can output power to each module in the audio transmitting module and / or the audio receiving module through the switching module and the voltage stabilizing module. The user can turn the wireless microphone on and off by pressing the power switch button SW1 in the switching module. When the wireless microphone is turned on, a stable power supply voltage is output to each module in the first audio processing module and / or the second audio processing module through the voltage stabilizing module to ensure the overall stability of this embodiment.

[0064] In this embodiment, the charge and discharge module includes a charging interface, a lithium battery charge management chip electrically connected to the charging interface, and a battery interface electrically connected to the lithium battery charge management chip. The battery interface is also electrically connected to a charge and discharge switching module. The controlled end of the charge and discharge switching module is electrically connected to the first audio processing module and / or the second audio processing module. The output end of the charge and discharge switching module is electrically connected to the voltage stabilizing module via the switch module. It should be noted that the battery interface is used to connect to the energy storage battery and charge the energy storage battery via the charging interface and the lithium battery charge management chip. When electricity is needed, the charge and discharge switching module and the switch module only need to be turned on to realize the lithium battery's function of supplying power to each module in the audio transmitting module and / or the audio receiving module. The first audio processing module and / or the second audio processing module can control the discharge or charging of the battery by controlling the conduction or disconnection of the charge and discharge switching module.

[0065] Specifically, in this embodiment, the power supply module is divided into a first power supply module for supplying power to each module in the audio transmitting module and a second power supply module for supplying power to each module in the audio receiving module. The circuit schematics of the first power supply module and the second power supply module are the same. Taking the first power supply module as an example, it includes a first charging and discharging module, a first switching module and a first voltage stabilizing module, wherein the first charging module includes Figure 9 The first charging interface J2 shown in FIG. Figure 10 The first lithium battery charging management chip U4 and its peripheral circuits as shown Figure 11 The circuit schematic diagram of the first charge and discharge switching module and the first battery interface J3, the first switch module is as shown in FIG. Figure 12 As shown, the circuit schematic diagram of the first voltage stabilizing module is as follows Figure 13 shown.

[0066] Example 2:

[0067] Based on Example 2, this embodiment provides a working method of a wireless microphone, such as Figure 14 Shown, including:

[0068] The audio collection module collects the calling audio signal and sends it to the first audio processing module;

[0069] The background audio receiving module obtains the background audio signal, and sends the background audio signal to the first audio processing module in sequence through the second audio processing module;

[0070] The first audio processing module receives and processes the calling audio signal input by the audio acquisition module in real time, and receives the background audio signal input by the background audio receiving module in real time;

[0071] The first audio processing module sends the processed calling audio signal to the audio output module through the second audio processing module, so that the audio output module outputs the processed calling audio signal;

[0072] The first audio processing module sends the processed calling audio signal and the background audio signal to the monitoring module.

[0073] The above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the above embodiments, or that some of the technical features may be replaced with equivalents. Such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

[0074] Finally, it should be noted that the present invention is not limited to the aforementioned optional embodiments. Anyone can derive various other product forms based on the teachings of this invention. The aforementioned specific embodiments should not be construed as limiting the scope of protection of the present invention. The scope of protection of the present invention shall be determined by the claims, and the specification may be used to interpret the claims.

Claims

1. A wireless microphone, characterized in that: The audio transmitting module comprises an audio transmitting module and an audio receiving module, wherein the audio transmitting module comprises a first audio processing module and an audio acquisition module and a monitoring module respectively electrically connected to the first audio processing module; the audio receiving module comprises a second audio processing module and a background audio receiving module and an audio output module respectively electrically connected to the second audio processing module; the first audio processing module and the second audio processing module are communicatively connected; The audio acquisition module is used to collect the calling audio signal and send it to the first audio processing module; The first audio processing module is used to process the calling audio signal after receiving it, and send the processed calling audio signal to the second audio processing module and the monitoring module respectively, so that the second audio processing module outputs the calling audio signal through the audio output module; The background audio receiving module is used to obtain the background audio signal and send the background audio signal to the monitoring module through the second audio processing module and the first audio processing module in sequence; The monitoring module is used to receive and output the processed calling audio signal and the background audio signal; The first audio processing module and / or the second audio processing module adopts an HTQ653 audio processing chip and its peripheral circuits; The audio emission module also includes a sound effect adjustment module, which includes a mixing control module, a volume increase module, a volume reduction module and / or a voice change module. The mixing control module, the volume increase module, the volume reduction module and / or the voice change module are electrically connected to the first audio processing module.

2. A wireless microphone according to claim 1, characterized in that: The audio acquisition module includes an audio amplifier chip, a fifth resistor, an eighth capacitor, a ninth capacitor, a seventh resistor, a twelfth capacitor, a thirteenth capacitor, a tenth resistor, a sixth resistor, a tenth capacitor, a fourth resistor and a sixth capacitor. The audio amplifier chip uses an operational amplifier; the inverting input terminal of the audio amplifier chip is electrically connected to the interactive interface through the fifth resistor and the eighth capacitor as an audio acquisition pin in sequence, the junction point of the fifth resistor and the eighth capacitor is grounded through the ninth capacitor, the non-inverting input terminal of the audio amplifier chip is electrically connected to the power supply module through the seventh resistor, the non-inverting input terminal of the audio amplifier chip is also grounded through the twelfth capacitor, the thirteenth capacitor and the tenth resistor respectively, the inverting input terminal of the audio amplifier chip is also electrically connected to its output terminal through the sixth resistor, the tenth capacitor is connected in parallel with the sixth resistor, and the output terminal of the audio amplifier chip is electrically connected to the first audio processing module through the fourth resistor and the sixth capacitor as an audio output pin in sequence.

3. The wireless microphone according to claim 1, wherein: The monitoring module includes an audio power amplifier, a twenty-seventh capacitor, a thirteenth resistor, a twelfth resistor, a twenty-sixth capacitor, a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, a thirty-first capacitor, an eighteenth resistor, a thirty-fourth capacitor, a nineteenth resistor and a twentieth resistor, and the audio power amplifier adopts an LPA4722 audio power amplifier; the 14th pin of the audio power amplifier is electrically connected to the first audio processing module as a left channel audio input pin through the thirteenth resistor and the twenty-seventh capacitor in sequence, the 14th pin of the audio power amplifier is also electrically connected to the 12th pin of the audio power amplifier through the twelfth resistor, and the 15th pin of the audio power amplifier is electrically connected to the 14th resistor and the twenty-sixth capacitor in sequence. The capacitor is grounded, pin 15 of the audio power amplifier is also grounded through a fifteenth resistor, and pin 12 of the audio power amplifier is electrically connected to an interactive interface as a left channel audio output pin; pin 8 of the audio power amplifier is electrically connected to the first audio processing module as a right channel audio input pin through a nineteenth resistor and a thirty-fourth capacitor in sequence, pin 8 of the audio power amplifier is also electrically connected to pin 10 of the audio power amplifier through a twentieth resistor, pin 7 of the audio power amplifier is also grounded through an eighteenth resistor and a thirty-first capacitor in sequence, pin 7 of the audio power amplifier is grounded through a sixteenth resistor, and pin 10 of the audio power amplifier is electrically connected to the interactive interface as a right channel audio output pin.

4. The wireless microphone according to claim 1, wherein: The sound effect adjustment module includes a mixing control module, a volume increase module, a volume decrease module and a voice change module. The mixing control module includes a mixing control button with one end being grounded and the other end being electrically connected to the first audio processing module via a 30th resistor. The volume increase module includes a volume increase control button with one end being grounded and the other end being electrically connected to the first audio processing module via a 31st resistor. The volume decrease module includes a volume decrease control button with one end being grounded and the other end being electrically connected to the first audio processing module via a 32nd resistor. The voice change module includes a voice change control button with one end being grounded and the other end being electrically connected to the first audio processing module via a 33rd resistor.

5. The wireless microphone according to claim 1, wherein: The wireless microphone also includes a power supply module, which is used to provide power support to the audio transmitting module and / or the audio receiving module; the power supply module includes a charging and discharging module, a switching module and a voltage stabilizing module electrically connected in sequence, the output end of the voltage stabilizing module is electrically connected to each module in the audio transmitting module and / or each module in the audio receiving module, and the controlled end of the switching module is electrically connected to the first audio processing module and / or the second audio processing module.

6. The wireless microphone according to claim 5, characterized in that: The charge and discharge module includes a charging interface, a lithium battery charge management chip electrically connected to the charging interface, and a battery interface electrically connected to the lithium battery charge management chip. The battery interface is also electrically connected to a charge and discharge switching module. The controlled end of the charge and discharge switching module is electrically connected to the first audio processing module and / or the second audio processing module. The output end of the charge and discharge switching module is electrically connected to the voltage stabilizing module through the switch module.

7. A method for operating a wireless microphone according to any one of claims 1 to 6, characterized in that: include: The audio collection module collects the calling audio signal and sends it to the first audio processing module; The background audio receiving module obtains the background audio signal, and sends the background audio signal to the first audio processing module in sequence through the second audio processing module; The first audio processing module receives and processes the calling audio signal input by the audio acquisition module in real time, and receives the background audio signal input by the background audio receiving module in real time; The first audio processing module sends the processed calling audio signal to the audio output module through the second audio processing module, so that the audio output module outputs the processed calling audio signal; The first audio processing module sends the processed calling audio signal and the background audio signal to the monitoring module.

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