Microphone frequency modulation device

Abstract

The utility model relates to the technical field of audio transmission, and discloses a microphone frequency modulation device, which comprises a main control panel and an operation panel, an adjusting module, a frequency adjusting module, a through switch, a mixed signal output module, an A channel signal output module, a B channel signal output module, a power supply module, an antenna, a radio frequency chip and an MCU control module are arranged on the main control panel; an A volume up key, an A volume down key, an A frequency matching key and a wiring module are arranged on the operation panel; input, gain adjustment, frequency setting, modulation, volume control and emission of audio signals are realized through a plurality of modules on the main control panel and the operation panel, user operation is simplified, clearer sound quality is provided, and the sound quality is improved. And the limitation of the traditional FM or AM modulation mode on interference and transmission distance is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of audio transmission, and particularly relates to a microphone frequency modulation device. Background Art

[0002] Most wireless microphones and portable wireless communication devices on the market use FM or AM modulation methods. These two modulation methods are widely used in wireless communication, but they have different characteristics and application scenarios. Frequency Modulation (FM): FM is a modulation technique in which the frequency of the audio signal is adjusted while the amplitude remains constant. FM broadcasting is usually used for radio broadcasting because it can provide better sound quality and a longer transmission distance. FM signals are not easily affected by static noise, so a clearer signal can be obtained at the receiving end. However, FM broadcasting requires a larger bandwidth and usually can only transmit monophonic audio. Amplitude Modulation (AM) is a modulation technique in which the amplitude of the audio signal is adjusted while the frequency remains constant. AM broadcasting is usually used for traditional wireless communication, such as radio broadcasting. AM signals have a narrower bandwidth and can transmit more channels, but the sound quality is usually not as good as that of FM. AM signals are easily affected by static noise and electromagnetic interference, which may cause signal interruption or a decline in sound quality during transmission.

[0003] These modulation methods are usually used for low-power local communication (20 Hz to 12 KHz), such as walkie-talkies, wireless microphones, and other portable wireless devices. Because these technologies are mature and the cost is low, this frequency range can meet the needs of most voices and music. However, these traditional modulation methods do have some limitations. Traditional microphones use one antenna to receive one channel. Other FM systems transmit at one end and receive at the other end, which is a simplex mode. Transmission and reception cannot occur simultaneously. To receive two channels, two antennas are required. Using two antennas means more physical space and accessories are needed, which may cause difficulties in installation and layout in some compact occasions. Additional antennas will increase the material cost. At the same time, more complex circuit design and maintenance may also be required, thus increasing the overall system cost. The design and debugging of a dual-antenna system are usually more complex and require more knowledge and experience to ensure the stable operation of the system. Summary of the Invention

[0004] The utility model aims to solve the technical problems in the above-mentioned prior art that the traditional modulation method is vulnerable to interference and has a limited transmission distance.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] A microphone frequency modulation device includes a main control panel and an operation panel. On the main control panel, there are an adjustment module that allows users to adjust the gain of a certain frequency point of the received audio signal, a frequency adjustment module that allows adjustment of the frequency point of the received audio signal, a direct-through switch that allows the audio signal to be directly output without frequency point and gain adjustment, an A-channel signal output module responsible for outputting the received A-channel audio signal, a B-channel signal output module responsible for outputting the received B-channel audio signal, a mixed signal output module that mixes and outputs the received two-channel audio signals, a power supply module that provides the required DC power for the entire device and ensures the normal operation of all modules, an antenna for transmitting the modulated radio frequency signal, a radio frequency chip responsible for performing the modulation and demodulation processes to convert the audio signal into a radio frequency signal and convert the radio frequency signal back into an audio signal at the receiving end, and an MCU control module responsible for coordinating and managing the work of all modules, executing the instructions input by the user, and ensuring the stable operation of the entire system;

[0007] On the operation panel, there are an A volume up key and an A volume down key for adjusting the volume of the A channel, an A frequency pairing key for setting the frequency of the A channel and ensuring the same transmission and reception frequencies, a wiring module for accessing an external microphone audio source and inputting the audio signal into the main control panel, a B volume up key and a B volume down key for adjusting the volume of the B channel, a B frequency pairing key for setting the frequency of the B channel and ensuring the same transmission and reception frequencies, and a device switch key for turning on or off the entire device. The wiring module on the operation panel is connected to the MCU control module on the main control panel through the control panel wiring.

[0008] Preferably, the radio frequency chip converts the audio signal into a radio frequency signal, and the adjustment module allows users to adjust the intensity of the input audio signal to ensure that the signal will not be overloaded or too weak during the modulation process, so as to obtain the best modulation effect.

[0009] Preferably, the frequency of the transmitted signal is set through the frequency adjustment module to adapt to different communication requirements or avoid frequency conflicts with other devices.

[0010] Preferably, the audio signal passes through the adjustment module, and the intensity of the signal is adjusted as needed. The audio signal with the adjusted volume will be sent to the radio frequency chip for demodulation. The demodulated radio frequency signal is divided into two channels: the A-channel signal output module and the B-channel signal output module.

[0011] Preferably, the A-channel signal output module cooperates with the A volume up key and the A volume down key to adjust the volume, and the B-channel signal output module cooperates with the B volume up key and the B volume down key to adjust the volume.

[0012] Preferably, the transmission frequencies of the A-channel signal output module and the B-channel signal output module are set respectively through the A frequency pairing key and the B frequency pairing key.

[0013] Preferably, the signals of the A-channel signal output module and the B-channel signal output module are mixed by the mixed signal output module and then transmitted through the antenna.

[0014] Compared with the prior art, the technical effects and advantages of the present utility model are:

[0015] The microphone frequency modulation device has the ability of two-way communication and can switch between transmitting and receiving audio signals. This is a feature different from the traditional simplex mode (one-way transmission). In the simplex mode, the device can only transmit or receive at a given time and cannot do both simultaneously. However, the microphone frequency modulation device can transmit the modulated RF signal while also receiving the RF signals from other transmitters and converting them back to audio signals at the receiving end; the RF chip can convert the audio signal into an RF signal and transmit it, and at the same time, it can also receive the RF signal and convert it back to the audio signal; the frequency adjustment module on the main control panel allows the user to set the frequencies for receiving and transmitting; the device includes multiple signal output modules (A-channel and B-channel), as well as a mixed signal output module. Then this microphone frequency modulation device is essentially a duplex communication device that can transmit and receive simultaneously within the same frequency band, thus supporting two-way communication.

[0016] If that's the case, then this device functionally surpasses traditional one-way transmitting or receiving FM devices, allowing real-time communication in both directions, similar to a phone call, rather than like traditional radio broadcasts where one device can only transmit and the other can only receive. This is a very important feature in modern communication systems because it improves the efficiency and real-time nature of communication.

[0017] The microphone frequency modulation device is connected to an external audio source (such as a microphone) through a wiring module, and the audio signal is input into the device. The user adjusts the intensity of the input audio signal through an adjustment module to ensure that the signal will not be overloaded or too weak during the modulation process. The user sets the frequency of the transmitted signal through the frequency adjustment module to meet the communication requirements or avoid frequency conflicts. The audio signal with the adjusted volume is sent to the RF chip for modulation to convert the audio signal into an RF signal. The modulated RF signal is divided into two output modules, the A-channel and the B-channel. The signal of each channel can be independently adjusted in volume. The transmitting frequencies of the A-channel and the B-channel are set through the A frequency pairing button and the B frequency pairing button to ensure that the transmitting and receiving frequencies are the same. The signals of the A-channel and the B-channel are mixed and then transmitted through the mixed signal output module, or transmitted separately, as selected by the user. The MCU control module is responsible for coordinating and managing the work of all modules, executing user instructions, and ensuring the stable operation of the system.

[0018] This microphone frequency modulation device can automatically and quickly switch the transmission frequency within a certain frequency range to avoid interference, improve the reliability of communication and anti-interference ability. It adopts QAM modulation in 5G communication technology, and transmits more information by modulating both amplitude and phase simultaneously, improving the data transmission rate and network capacity. The 5G system adopts a more intelligent frequency point management method, automatically selects the best frequency point for communication, simplifies user operations, and does not require the display of frequency points.

[0019] Through automatic channel switching and automatic frequency hopping technology, the device can effectively resist interference and avoid signal interruption or degradation of sound quality. 5G communication technology provides higher data transmission rate and network capacity, which may allow for longer transmission distances or higher signal coverage. QAM modulation technology provides more efficient signal transmission, which may improve audio quality, especially in complex electromagnetic environments.

[0020] In summary, this microphone frequency modulation device can provide a more reliable and efficient wireless audio transmission solution by combining 5G communication technology and advanced modulation technology, while overcoming some limitations of traditional FM or AM modulation methods. Brief Description of the Drawings

[0021] Figure 1 It is a structural schematic diagram of the present utility model.

[0022] In the figure: 1. Adjustment module; 2. Frequency adjustment module; 3. Through-switch; 4. Mixed signal output module; 5. A-channel signal output module; 6. B-channel signal output module; 7. Power supply module; 8. Antenna; 9. RF chip; 10. MCU control module; 11. Control panel wiring; 12. A volume up key; 13. A volume down key; 14. A frequency pairing key; 15. Wiring module; 16. B volume up key; 17. B volume down key; 18. B frequency pairing key; 19. Switch key. Detailed Embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] The following is a further detailed description of this application in conjunction with the attached Figure 1 to further illustrate the present application in detail.

[0025] An embodiment of the present application discloses a microphone frequency modulation device, which includes a main control panel and an operation panel. On the main control panel, there is an adjustment module 1 that allows a user to adjust the gain of a certain frequency point of the received audio signal, a frequency adjustment module 2 that allows the adjustment of the frequency point of the received audio signal, a through-switch 3 that allows the direct output of the audio signal without passing through frequency point and gain adjustments, an A-channel signal output module 5 that is responsible for outputting the received A-channel audio signal, a B-channel signal output module 6 that is responsible for outputting the received B-channel audio signal, a mixed signal output module 4 that mixes and outputs the received two-channel audio signals, a power supply module 7 that provides the required DC power for the entire device and ensures the normal operation of all modules, an antenna 8 that is used to transmit the modulated RF signal, an RF chip 9 that is responsible for performing the modulation and demodulation processes to convert the audio signal into an RF signal and convert the RF signal back into an audio signal at the receiving end, and an MCU control module 10 that is responsible for coordinating and managing the work of all modules, executing the instructions input by the user, and ensuring the stable operation of the entire system;

[0026] On the operation panel, there are an A volume up key 12 and an A volume down key 13 for adjusting the volume of the A channel, an A frequency pairing button 14 for setting the frequency of the A channel and ensuring that the transmitting and receiving frequencies are consistent, a wiring module 15 for accessing an external microphone audio source and inputting the audio signal into the main control panel, a B volume up key 16 and a B volume down key 17 for adjusting the volume of the B channel, a B frequency pairing button 18 for setting the frequency of the B channel and ensuring that the transmitting and receiving frequencies are consistent, and a device on / off switch button 19. The wiring module 15 on the operation panel is connected to the MCU control module 10 on the main control panel through the control panel wiring 11.

[0027] The microphone frequency modulation device is characterized in that it uses a single antenna 8 to receive audio signals of two different channels. In traditional designs, this is achieved by using two antennas 8 to receive signals of different channels respectively. It avoids the physical limitations and complexities in the traditional method, while reducing costs and improving the portability of the device.

[0028] The RF chip 9 is responsible for converting the audio signal into an RF signal and converting the RF signal back into an audio signal at the receiving end. This chip has a dual-channel function and can process signals from two different channels simultaneously. In this way, a single antenna 8 can receive and distinguish signals from two different channels through the technology of the RF chip 9. The RF chip 9 and the MCU control module 10 in the device work together to achieve modulation and demodulation of signals from two channels. After receiving the signals from two channels, the RF chip 9 converts them into RF signals through frequency modulation and then transmits them through the antenna 8. At the receiving end, the RF chip 9 demodulates these RF signals back into audio signals. The through-switch 3 allows the audio signal to be directly output without frequency point and gain adjustment. In some cases, complex frequency adjustment of the signal is not required, which simplifies the system design and allows the use of a single antenna 8. Although the device uses a single antenna 8, the volume and frequency of channel A and channel B can be adjusted independently. This means that although the two channels share the same antenna 8, the user's operation can ensure that the signals of each channel can be accurately received and processed. The "frequency pairing" button on the operation panel is used to ensure the consistency of the transmitting and receiving frequencies. This is crucial for dual-channel reception and can ensure that each channel can be accurately received through a single antenna 8.

[0029] The RF chip 9 converts the audio signal into an RF signal, and the adjustment module 1 allows the user to adjust the intensity of the input audio signal to ensure that the signal will not be overloaded or too weak during modulation, so as to obtain the best modulation effect.

[0030] The frequency of the transmitted signal is set through the frequency adjustment module 2 to adapt to different communication requirements or avoid frequency conflicts with other devices.

[0031] The audio signal passes through the adjustment module 1 and the signal intensity is adjusted as needed. The audio signal with adjusted volume will be sent to the RF chip 9 for modulation. The modulated RF signal is divided into two channels: the channel A signal output module 5 and the channel B signal output module 6.

[0032] The channel A signal output module 5 cooperates with the A volume up key 12 and the A volume down key 13 for volume adjustment, and the channel B signal output module 6 cooperates with the B volume up key 16 and the B volume down key 17 for volume adjustment.

[0033] The transmitting frequencies of the channel A signal output module 5 and the channel B signal output module 6 are set respectively through the A frequency pairing button 14 and the B frequency pairing button 18.

[0034] The signals of the channel A signal output module 5 and the channel B signal output module 6 are mixed together through the mixed signal output module 4 and then transmitted through the antenna 8.

[0035] The microphone selected is not the common one on the market, but is used in conjunction with the modulation device. The transmitting end of the microphone can receive and transmit signals, and holding the microphone in hand can facilitate the reception and transmission of signals.

[0036] The microphone frequency modulation device accesses an external audio source (such as a microphone, etc.) through the wiring module 15 on the operation panel, and inputs the audio signal into the device. The audio signal passes through the adjustment module 1, and the user can adjust the intensity of the signal to ensure that the signal will not be overloaded or too weak during the modulation process, so as to obtain the best modulation effect. The user sets the frequency of the transmitted signal through the frequency adjustment module 2 to adapt to different communication requirements or avoid frequency conflicts with other devices. The audio signal with adjusted volume will be sent to the RF chip 9 for modulation. The RF chip 9 converts the audio signal into a radio frequency signal, and this process is called modulation. The modulated radio frequency signal is divided into two channels: the A-channel signal output module 5 and the B-channel signal output module 6. The signal of each channel can be adjusted in volume through the corresponding volume key. The user sets the transmission frequencies of the A-channel signal output module 5 and the B-channel signal output module 6 respectively through the A frequency pairing button 14 and the B frequency pairing button 18 to ensure that the transmission and reception frequencies are consistent.

[0037] If needed, the mixed signal output module 4 can mix the signals of the A-channel and the B-channel together, and then transmit them through the antenna 8. If mixing is not required, the signals of the A-channel and the B-channel can be transmitted separately.

[0038] The operation of the entire device is coordinated and managed by the MCU control module 10. The MCU receives the user's instructions (through the buttons on the operation panel), controls the operation of the module, and ensures the stable operation of the entire system.

[0039] Through the settings of the above various modules, the microphone frequency modulation device has the functions of automatic channel switching and automatic frequency hopping, and can quickly switch the transmission frequency within a certain frequency range to avoid interference. This technology is usually used in wireless communication, which can improve the reliability and anti-interference ability of communication. The wireless communication selects the 5G communication method, and the modulation adopts the QAM modulation technology, which transmits more information by modulating both the amplitude and the phase at the same time. This enables 5G communication to transmit more data on one frequency, thereby improving the data transmission rate and network capacity.

[0040] In 5G communication, the frequency point management method may be different from that of traditional communication systems. Traditional communication systems usually require users to manually select or display the currently used frequency points, while 5G systems may adopt a more intelligent frequency point management method, which can automatically select the best frequency points for communication without the need to display the frequency points, thus simplifying the user operation.

[0041] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A microphone frequency modulation device, comprising a main control panel and an operation panel, characterized in that: The main control panel is provided with an adjustment module (1) that allows users to adjust the gain of a certain frequency point of the received audio signal, a frequency adjustment module (2) that allows adjustment of the frequency of the received audio signal frequency point, a through-switch (3) that allows the audio signal to be directly output without passing through frequency point and gain adjustment, an A-channel signal output module (5) responsible for outputting the received A-channel audio signal, a B-channel signal output module (6) responsible for outputting the received B-channel audio signal, a mixed signal output module (4) that mixes and outputs the received two-channel audio signals, a power supply module (7) that provides the required DC power for the entire device and ensures the normal operation of all modules, an antenna (8) for transmitting the modulated RF signal, an RF chip (9) responsible for performing the modulation and demodulation processes to convert the audio signal into an RF signal and convert the RF signal back into an audio signal at the receiving end, and an MCU control module (10) responsible for coordinating and managing the operation of all modules, executing the instructions input by the user, and ensuring the stable operation of the entire system; The operation panel is provided with an A volume up key (12) and an A volume down key (13) for adjusting the volume of the A channel, an A frequency pairing button (14) for setting the frequency of the A channel and ensuring that the transmission and reception frequencies are consistent, a wiring module (15) for connecting to an external microphone audio source and inputting the audio signal into the main control panel, a B volume up key (16) and a B volume down key (17) for adjusting the volume of the B channel, a B frequency pairing button (18) for setting the frequency of the B channel and ensuring that the transmission and reception frequencies are consistent, and an on / off switch button (19) for turning on or off the entire device. The wiring module (15) on the operation panel is connected to the MCU control module (10) on the main control panel through the control panel wiring (11).

2. The microphone frequency modulation device according to claim 1, characterized in that: The RF chip (9) converts the audio signal into an RF signal.

3. A microphone frequency modulation device according to claim 1, characterized in that: The audio signal passes through the adjustment module (1) to adjust the signal strength as needed. The audio signal with adjusted volume will be sent to the RF chip (9) for demodulation. The demodulated RF signal is divided into two channels: the A-channel signal output module (5) and the B-channel signal output module (6).

4. A microphone frequency modulation device according to claim 1, characterized in that: The A-channel signal output module (5) cooperates with the A volume up key (12) and the A volume down key (13) to adjust the volume, and the B-channel signal output module (6) cooperates with the B volume up key (16) and the B volume down key (17) to adjust the volume.

5. A microphone frequency modulation device according to claim 4, characterized in that: The transmission frequencies of the A-channel signal output module (5) and the B-channel signal output module (6) are set respectively through the A frequency pairing button (14) and the B frequency pairing button (18).

6. A microphone frequency modulation device according to claim 3, characterized in that: The signals of the A-channel signal output module (5) and the B-channel signal output module (6) are mixed together through the mixed signal output module (4) and then transmitted through the antenna (8).

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