Intelligent frequency management system for wireless microphone
By designing an intelligent frequency management system in a wireless microphone system, using signal level and noise level detection to automatically switch channels, the complex and susceptible frequency management in traditional systems is solved, and efficient and anti-interference frequency management is achieved.
Patent Information
- Application Number
- CN202421522918.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-06-28
AI Technical Summary
When facing the same frequency crosstalk, existing wireless microphone frequency management systems need to perform automatic frequency hopping, resulting in interruption of modulation signal and interference with the frequency. They need to manage and track heartbeat packets and consider packet loss issues, which is more troublesome.
A wireless microphone intelligent frequency management system is designed, and the signal level detection circuit and noise level detection circuit are used to filter out high-quality frequency points and available frequency points, and the channel selection control circuit is used to automatically switch channels at the receiving end to achieve accurate frequency management and subsequent detection without two-way communication.
It realizes accurate frequency management and subsequent detection without the need for two-way communication, with better timeliness and stronger anti-interference ability, avoiding the problems of complex frequency management and susceptibility to interference in traditional systems.
Smart Images
Figure CN222803004U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wireless microphones, in particular to an intelligent frequency management system for wireless microphones. Background Art
[0002] The core of a wireless microphone is the microphone element, which converts sound waves into electrical signals. The transmitter in a wireless microphone receives the electrical signals generated by the microphone element and converts them into radio frequency (RF) signals. RF signals contain audio information and are radio waves, usually in the UHF (ultra-high frequency) range, which can provide good coverage and audio quality. At the other end, the receiver captures the radio waves and converts them back into electrical signals. The electrical signal is then sent to the audio mixer, where it can be further processed, mixed, and finally sent to the sound system for amplification. U-band wireless microphones are widely used because of their stable and high-quality transmitted audio signals, strong anti-interference ability, and the ability to have more effective compatible frequencies. However, U-band wireless microphones are often plagued by the problem of co-frequency crosstalk. When external interference is in the same frequency as the microphone, it will cause the receiving end to receive useless noise interference or crosstalk audio. The existing frequency management system uses automatic frequency hopping technology. The usual frequency hopping will cause interruption of the modulation signal and interference to the frequency after the hopping. Although the anti-interference performance is enhanced by the cumbersome program design of packaging, sending, unpacking, feedback reception verification and reply, it is necessary to manage and track the heartbeat packets in the later stage of transmission, and it is also necessary to consider problems such as packet loss, which is more troublesome and inconvenient to use. Utility Model Content
[0003] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and to provide a wireless microphone intelligent frequency management system that can complete accurate frequency management and subsequent detection without transmitting, without the need for post-transmission management and tracking, without considering packet loss, and without the need for two-way communication.
[0004] According to the wireless microphone intelligent frequency management system of the embodiment of the utility model, it includes a transmitting end and a receiving end, the transmitting end is used to receive sound waves, convert the sound waves into electrical signals and convert the electrical signals into radio frequency signals for transmission, and the receiving end is used to receive the radio frequency signals; the receiving end includes a microcontroller 1 and a signal level detection circuit, a noise level detection circuit, a first audio processing module, an audio channel 1, an audio channel 2 and a channel selection control circuit electrically connected to the microcontroller 1 respectively, the input end of the first audio processing module is used to receive the radio frequency signal, the output end of the first audio processing module is electrically connected to the audio channel 1 and the audio channel 2 respectively, the first audio processing module can modulate and demodulate the received radio frequency signal, separate the signal and restore the audio, and then output it through the audio channel 1 / audio channel 2; the signal level detection circuit The circuit is electrically connected to the audio processing module to detect the level of the received radio frequency signal to screen out high-quality frequency points and available frequency points. The microcontroller 1 sets the audio channel 1 and the part of the first audio processing module that communicates with the audio channel 1 as the standard use channel for transmitting high-quality frequency points, and sets the audio channel 2 and the part of the first audio processing module that communicates with the audio channel 2 as the spare channel for transmitting available frequency points; the noise level detection circuit is electrically connected to the first audio processing module to detect noise interference signals, and the channel selection control circuit is electrically connected to the audio channel 1 and the audio channel 2 respectively. When it is detected that there is noise interference on the standard use channel / spare channel or the audio signal quality deteriorates, the channel selection control circuit switches the signal output from the standard use channel / spare channel to the spare channel / standard use channel.
[0005] According to some embodiments of the present invention, the bandwidth of the high-quality frequency point is greater than 400K, and the bandwidth of the available frequency point is not less than 200K.
[0006] According to some embodiments of the present utility model, the first audio processing module includes a first processing unit and a second processing unit, the first processing unit and the audio channel 1 form an RX1 channel, the second processing unit and the audio channel 2 form an RX2 channel, the first processing unit includes a radio frequency amplification circuit 1, a modulation and demodulation circuit 1, a signal separation circuit 1 and an audio restoration circuit 1, the amplified radio frequency signal is modulated and demodulated by the modulation and demodulation circuit 1 and enters the signal separation circuit 1, the separated signal is restored by the audio restoration circuit 1 to obtain an audio signal 1, and the audio signal 1 enters the channel selection control circuit to control the audio signal to be output through the audio channel 1 / audio channel 2; The second processing unit includes a radio frequency amplification circuit 2, a modulation and demodulation circuit 2, a signal separation circuit 2 and an audio restoration circuit 2. The amplified radio frequency signal is modulated and demodulated by the modulation and demodulation circuit 2 and then enters the signal separation circuit 2. The separated signal is restored by the audio restoration circuit 2 to obtain an audio signal 2. The audio signal 2 enters the channel selection control circuit to control the audio signal to be output through the audio channel 1 / audio channel 2; and the signal level detection circuit is electrically connected to the modulation and demodulation circuit 1 and the modulation and demodulation circuit 2, respectively, to screen out high-quality frequency points and available frequency points; the noise level detection circuit is electrically connected to the audio restoration circuit 1 and the audio restoration circuit 2, respectively, to detect noise interference and audio quality.
[0007] According to some embodiments of the present invention, the receiving end further comprises a pilot signal detection circuit electrically connected to the microcontroller, and the pilot signal detection circuit is electrically connected to the signal separation circuit 1 and the signal separation circuit 2 respectively to detect and obtain the pilot signal.
[0008] According to some embodiments of the present utility model, the first audio processing module also includes an audio amplifier circuit and a volume adjustment circuit 1, one end of the volume adjustment circuit 1 is electrically connected to the microcontroller 1, the other end of the volume adjustment circuit 1 is electrically connected to one end of the audio amplifier circuit, and the other end of the audio amplifier circuit is electrically connected to the audio channel 1 and the audio channel 2 respectively.
[0009] According to some embodiments of the utility model, the transmitting end includes a microcontroller 2 and an address generation module, a pilot signal module and a second audio processing module electrically connected to the microcontroller 2 respectively, the second audio processing module is used to pick up sound waves, convert the sound waves into electrical signals and mix, modulate and demodulate the electrical signals to generate radio frequency signals, the address generation module is electrically connected to the second audio processing module to assign an address to the radio frequency signal, and the pilot signal module is electrically connected to the second audio processing module to provide a pilot signal.
[0010] According to some embodiments of the utility model, the second audio processing module includes a pickup, a signal processing circuit, a TX1 channel and a TX2 channel. The input end of the signal processing circuit is electrically connected to the pickup to convert sound waves into electrical signals. The output end of the signal processing circuit is electrically connected to the TX1 channel and the TX2 channel respectively. The TX1 channel includes a signal mixing circuit 1, a modulation and demodulation circuit 3, and a radio frequency amplification circuit 3. Multiple electrical signals are mixed by the signal mixing circuit 1 and enter the modulation and demodulation circuit 3, and then the radio frequency signal is emitted through the radio frequency amplification circuit 3; the TX2 channel includes a signal mixing circuit 2, a modulation and demodulation circuit 4, and a radio frequency amplification circuit 4. Multiple electrical signals are mixed by the signal mixing circuit 2 and enter the modulation and demodulation circuit 4, and then the radio frequency signal is emitted through the radio frequency amplification circuit 4. The address generation module is electrically connected to the signal mixing circuit 1 and the signal mixing circuit 2 respectively, and the pilot signal module is electrically connected to the modulation and demodulation circuit 3 and the modulation and demodulation circuit 4 respectively.
[0011] According to some embodiments of the present invention, the second audio processing module includes a volume adjustment circuit 2, and the volume adjustment circuit 2 is electrically connected to the signal processing circuit.
[0012] According to the wireless microphone intelligent frequency management system of the embodiment of the utility model, at least the following beneficial effects are achieved: the signal level detection circuit is used to detect the level of the received radio frequency signal to screen out high-quality frequency points and available frequency points, and the microcontroller 1 sets the audio channel 1 as the standard channel for transmitting high-quality frequency points, and sets the audio channel 2 as the standby channel for transmitting available frequency points; and because the channel selection control circuit is electrically connected to the audio channel 1 and the audio channel 2 respectively, when the noise level detection circuit detects that there is noise interference on the standard channel / standby channel or the audio signal quality deteriorates, the channel selection control circuit switches the signal output from the standard channel / standby channel to the standby channel / standard channel. Compared with the traditional frequency hopping that requires two-way communication, the system has better timeliness, is less susceptible to interference, and does not need to change any parameters of the channel currently in use when performing the channel switching operation, so that only sending but not receiving is truly achieved, and there is no need for post-transmission management tracking, no need to consider the trouble of packet loss, and no need for two-way communication to complete accurate frequency management and subsequent detection.
[0013] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings;
[0015] Figure 1 It is the circuit block diagram of the receiving end;
[0016] Figure 2 It is the block diagram of the transmitter circuit;
[0017] Figure 3 is a circuit schematic diagram of the microcontroller 1;
[0018] Figure 4 This is the schematic diagram of the noise level detection circuit;
[0019] Figure 5 This is the schematic diagram of the channel selection control circuit;
[0020] Figure 6 This is the schematic diagram of the pilot signal detection circuit. DETAILED DESCRIPTION
[0021] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.
[0022] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0023] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0024] Reference Figures 1 to 6The utility model discloses an intelligent frequency management system for a wireless microphone, comprising a transmitting end and a receiving end, wherein the transmitting end is used to receive sound waves, convert the sound waves into electrical signals and convert the electrical signals into radio frequency signals for transmission, and the receiving end is used to receive the radio frequency signals; the receiving end comprises a microcontroller 1 and a signal level detection circuit, a noise level detection circuit, a first audio processing module, an audio channel 1, an audio channel 2 and a channel selection control circuit which are respectively electrically connected to the microcontroller 1, the input end of the first audio processing module is used to receive radio frequency signals, the output end of the first audio processing module is respectively electrically connected to the audio channel 1 and the audio channel 2, the first audio processing module can modulate and demodulate the received radio frequency signals, perform signal separation and audio restoration, and then output them through the audio channel 1 / audio channel 2; the signal level detection circuit and The audio processing module is electrically connected to detect the level of the received radio frequency signal to screen out high-quality frequency points and available frequency points. The microcontroller 1 sets the audio channel 1 and the part of the first audio processing module that communicates with the audio channel 1 as the standard channel for transmitting high-quality frequency points, and sets the audio channel 2 and the part of the first audio processing module that communicates with the audio channel 2 as the standby channel for transmitting available frequency points; the noise level detection circuit is electrically connected to the first audio processing module for detecting noise interference signals, and the channel selection control circuit is electrically connected to the audio channel 1 and the audio channel 2 respectively. When noise interference is detected on the standard channel or the quality of the audio signal deteriorates, the channel selection control circuit switches the signal output from the standard channel to the standby channel, that is, the audio signal is switched from audio channel 1 to audio channel 2 for output. Similarly, when noise interference is detected on the standby channel or the quality of the audio signal deteriorates, the channel selection control circuit switches the signal output from the standby channel to the standard channel, that is, the audio signal is switched from audio channel 2 to audio channel 1 for output. For example, the same signal of audio channel 1 and audio channel 2 is demodulated by conventional U-segment demodulation as a backup, and output to the channel selection control circuit (also called the backup / common switching port). When the audio channel 2 signal is detected to be abnormal, the received signal is switched to the audio channel 1 signal output again. At this point, audio channel 2 will be converted to a backup channel again, and a value will be assigned as a mark, and it will immediately wait for the next frequency diversity operation to be executed. Regardless of which frequency point is interfered in the "in use" or "backup" channel, the frequency management unit in the microcontroller 1 will immediately perform the optimal switching signal output at the backup / common switching port after detecting it, ensuring that the transmission content and transmission quality remain unchanged, and ensuring that the receiving end can select the best between the current channel and the backup channel at any time, and switch the output signal to a high-quality receiving signal.
[0025] Specifically, the bandwidth of the high-quality frequency point is greater than 400K, and the bandwidth of the available frequency point is not less than 200K.
[0026] like Figure 3, is a circuit schematic diagram of the receiving end microcontroller 1, and the microcontroller 1 can use an existing main control chip. Figure 4 , is a schematic diagram of a noise level detection circuit. The noise level detection circuit can use an existing noise detection circuit. Figure 5 , is a signal level detection circuit, which can use the existing signal detection circuit that can detect the level of the radio frequency signal to screen out the high-quality frequency points and the available frequency points. Figure 6 The receiving end also includes a pilot signal detection circuit electrically connected to the microcontroller, and the pilot signal detection circuit is electrically connected to the signal separation circuit 1 and the signal separation circuit 2 respectively to detect and obtain the pilot signal.
[0027] like Figure 1 The first audio processing module includes a first processing unit and a second processing unit. The first processing unit and the audio channel 1 form an RX1 channel, and the second processing unit and the audio channel 2 form an RX2 channel. The first processing unit includes a radio frequency amplifier circuit 1, a modulation and demodulation circuit 1, a signal separation circuit 1 and an audio restoration circuit 1. The amplified radio frequency signal is modulated and demodulated by the modulation and demodulation circuit 1 and enters the signal separation circuit 1. The separated signal is restored by the audio restoration circuit 1 to obtain an audio signal 1. The audio signal 1 enters the channel selection control circuit to control the audio signal to be output through the audio channel 1 / audio channel 2; the second processing unit includes a radio frequency amplifier circuit 1, a modulation and demodulation circuit 1, a signal separation circuit 1 and an audio restoration circuit 1. The amplified radio frequency signal enters the signal separation circuit 1 after being modulated and demodulated by the modulation and demodulation circuit 1. The separated signal is restored by the audio restoration circuit 1 to obtain an audio signal 1. The audio signal 1 enters the channel selection control circuit to control the audio signal to be output through the audio channel 1 / audio channel 2; the second processing unit includes a radio frequency amplifier circuit 1, a modulation and demodulation circuit 1, a signal separation circuit 1 and an audio restoration circuit 1. Circuit 2, modulation and demodulation circuit 2, signal separation circuit 2 and audio restoration circuit 2, the amplified radio frequency signal is modulated and demodulated by the modulation and demodulation circuit 2 and then enters the signal separation circuit 2, the separated signal is restored by the audio restoration circuit 2 to obtain the audio signal 2, the audio signal 2 enters the channel selection control circuit to control the audio signal to be output through the audio channel 1 / audio channel 2; and the signal level detection circuit is respectively electrically connected to the modulation and demodulation circuit 1 and the modulation and demodulation circuit 2 to screen out high-quality frequency points and available frequency points; the noise level detection circuit is respectively electrically connected to the audio restoration circuit 1 and the audio restoration circuit 2 to detect noise interference and audio quality.
[0028] like Figure 1 The first audio processing module also includes an audio amplifier circuit and a volume adjustment circuit 1, one end of the volume adjustment circuit 1 is electrically connected to the microcontroller 1, the other end of the volume adjustment circuit 1 is electrically connected to one end of the audio amplifier circuit, and the other end of the audio amplifier circuit is electrically connected to the audio channel 1 and the audio channel 2 respectively.
[0029] like Figure 2The transmitting end includes a microcontroller 2 and an address generation module, a pilot signal module and a second audio processing module electrically connected to the microcontroller 2 respectively. The second audio processing module is used to pick up sound waves, convert the sound waves into electrical signals and mix, modulate and demodulate the electrical signals to generate radio frequency signals. The address generation module is electrically connected to the second audio processing module to assign an address to the radio frequency signal. The pilot signal module is electrically connected to the second audio processing module to provide a pilot signal.
[0030] Furthermore, the second audio processing module includes a microphone, a signal processing circuit, a TX1 channel and a TX2 channel. The input end of the signal processing circuit is electrically connected to the microphone to convert sound waves into electrical signals. The output end of the signal processing circuit is electrically connected to the TX1 channel and the TX2 channel respectively. The TX1 channel includes a signal mixing circuit 1, a modulation and demodulation circuit 3, and a radio frequency amplification circuit 3. Multiple electrical signals are mixed by the signal mixing circuit 1 and enter the modulation and demodulation circuit 3, and then the radio frequency signal is emitted through the radio frequency amplification circuit 3; the TX2 channel includes a signal mixing circuit 2, a modulation and demodulation circuit 4, and a radio frequency amplification circuit 4. Multiple electrical signals are mixed by the signal mixing circuit 2 and enter the modulation and demodulation circuit 4, and then the radio frequency signal is emitted through the radio frequency amplification circuit 4. The address generation module is electrically connected to the signal mixing circuit 1 and the signal mixing circuit 2 respectively, and the pilot signal module is electrically connected to the modulation and demodulation circuit 3 and the modulation and demodulation circuit 4 respectively.
[0031] Furthermore, the second audio processing module includes a volume adjustment circuit 2, and the volume adjustment circuit 2 is electrically connected to the signal processing circuit.
[0032] The signal level detection circuit of the system is used to detect the level of the received radio frequency signal to screen out high-quality frequency points and available frequency points. The microcontroller 1 sets the RX1 channel and the audio channel 1 as the standard use channel for transmitting high-quality frequency points, and sets the RX2 channel and the audio channel 2 as the spare channel for transmitting available frequency points; and because the channel selection control circuit is electrically connected to the audio channel 1 and the audio channel 2 respectively, when the noise level detection circuit detects that there is noise interference on the standard use channel / the spare channel or the audio signal quality deteriorates, the channel selection control circuit switches the signal output from the standard use channel / the spare channel to the spare channel / the standard use channel. Compared with the traditional frequency hopping that requires two-way communication, the system has better timeliness, is less susceptible to interference, and does not need to change any parameters of the channel currently in use when performing the channel switching operation. It truly achieves only sending and not receiving, and does not require post-transmission management and tracking, does not need to consider the trouble of packet loss, and can complete accurate frequency management and subsequent detection without two-way communication.
[0033] It is easy for those skilled in the art to understand that the above preferred embodiments can be freely combined and superimposed without conflict.
[0034] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention specification and drawings under the utility model concept, or directly or indirectly applied in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. A wireless microphone intelligent frequency management system, characterized in that: include: A transmitting end and a receiving end, the transmitting end is used to receive sound waves, convert the sound waves into electrical signals and convert the electrical signals into radio frequency signals for transmission, and the receiving end is used to receive the radio frequency signals; The receiving end includes a microcontroller 1 and a signal level detection circuit, a noise level detection circuit, a first audio processing module, an audio channel 1, an audio channel 2 and a channel selection control circuit which are electrically connected to the microcontroller 1 respectively. The input end of the first audio processing module is used to receive a radio frequency signal. The output end of the first audio processing module is electrically connected to the audio channel 1 and the audio channel 2 respectively. The first audio processing module can modulate and demodulate the received radio frequency signal, perform signal separation and audio restoration, and then output it through the audio channel 1 / audio channel 2; The signal level detection circuit is electrically connected to the audio processing module to detect the level of the received radio frequency signal to screen out high-quality frequency points and available frequency points. The microcontroller 1 sets the audio channel 1 and the part of the first audio processing module that communicates with the audio channel 1 as the standard use channel for transmitting high-quality frequency points, and sets the audio channel 2 and the part of the first audio processing module that communicates with the audio channel 2 as the standby channel for transmitting available frequency points. The noise level detection circuit is electrically connected to the first audio processing module for detecting noise interference signals, and the channel selection control circuit is electrically connected to audio channel 1 and audio channel 2 respectively. When noise interference or deterioration of audio signal quality is detected on the standard channel / spare channel, the channel selection control circuit switches the signal output from the standard channel / spare channel to the spare channel / standard channel.
2. The wireless microphone intelligent frequency management system according to claim 1, characterized in that: The bandwidth of the high-quality frequency point is greater than 400K, and the bandwidth of the available frequency point is not less than 200K.
3. The wireless microphone intelligent frequency management system according to claim 1, characterized in that: The first audio processing module includes a first processing unit and a second processing unit. The first processing unit and the audio channel 1 form an RX1 channel, and the second processing unit and the audio channel 2 form an RX2 channel. The first processing unit includes a radio frequency amplification circuit 1, a modulation and demodulation circuit 1, a signal separation circuit 1 and an audio restoration circuit 1. The amplified radio frequency signal is modulated and demodulated by the modulation and demodulation circuit 1 and enters the signal separation circuit 1. The separated signal is restored by the audio restoration circuit 1 to obtain an audio signal 1. The audio signal 1 enters the channel selection control circuit to control the audio signal to be output through the audio channel 1 / audio channel 2; the second processing unit includes a radio frequency amplification circuit 2, a modulation and demodulation circuit 2, a signal separation circuit 2 and an audio restoration circuit 2. The amplified radio frequency signal is modulated and demodulated by the modulation and demodulation circuit 2 and enters the signal separation circuit 2. The separated signal is restored by the audio restoration circuit 2 to obtain an audio signal 2. The audio signal 2 enters the channel selection control circuit to control the audio signal to be output through the audio channel 1 / audio channel 2; and the signal level detection circuit is electrically connected to the modulation and demodulation circuit 1 and the modulation and demodulation circuit 2 respectively to screen out high-quality frequency points and available frequency points; The noise level detection circuit is electrically connected to the audio restoration circuit 1 and the audio restoration circuit 2 respectively to detect noise interference and audio quality.
4. The wireless microphone intelligent frequency management system according to claim 3, characterized in that: The receiving end further comprises a pilot signal detection circuit electrically connected to the microcontroller 1 , and the pilot signal detection circuit is electrically connected to the signal separation circuit 1 and the signal separation circuit 2 respectively to detect and obtain the pilot signal.
5. The wireless microphone intelligent frequency management system according to claim 4, characterized in that: The first audio processing module also includes an audio amplifier circuit and a volume adjustment circuit 1, one end of the volume adjustment circuit 1 is electrically connected to the microcontroller 1, the other end of the volume adjustment circuit 1 is electrically connected to one end of the audio amplifier circuit, and the other end of the audio amplifier circuit is electrically connected to the audio channel 1 and the audio channel 2 respectively.
6. The wireless microphone intelligent frequency management system according to claim 1, characterized in that: The transmitting end includes a microcontroller 2 and an address generation module, a pilot signal module and a second audio processing module electrically connected to the microcontroller 2 respectively, the second audio processing module is used to pick up sound waves, convert the sound waves into electrical signals and mix, modulate and demodulate the electrical signals to generate radio frequency signals, the address generation module is electrically connected to the second audio processing module to assign addresses to radio frequency signals, and the pilot signal module is electrically connected to the second audio processing module to provide a pilot signal.
7. The wireless microphone intelligent frequency management system according to claim 6, characterized in that: The second audio processing module includes a microphone, a signal processing circuit, a TX1 channel and a TX2 channel. The input end of the signal processing circuit is electrically connected to the microphone to convert sound waves into electrical signals. The output end of the signal processing circuit is electrically connected to the TX1 channel and the TX2 channel respectively. The TX1 channel includes a signal mixing circuit 1, a modulation and demodulation circuit 3, and a radio frequency amplification circuit 3. Multiple electrical signals are mixed by the signal mixing circuit 1 and enter the modulation and demodulation circuit 3, and then the radio frequency signals are emitted through the radio frequency amplification circuit 3; the TX2 channel includes a signal mixing circuit 2, a modulation and demodulation circuit 4, and a radio frequency amplification circuit 4. Multiple electrical signals are mixed by the signal mixing circuit 2 and enter the modulation and demodulation circuit 4, and then the radio frequency signals are emitted through the radio frequency amplification circuit 4. The address generation module is electrically connected to the signal mixing circuit 1 and the signal mixing circuit 2 respectively, and the pilot signal module is electrically connected to the modulation and demodulation circuit 3 and the modulation and demodulation circuit 4 respectively.
8. The wireless microphone intelligent frequency management system according to claim 7, characterized in that: The second audio processing module includes a volume adjustment circuit 2, and the volume adjustment circuit 2 is electrically connected to the signal processing circuit.