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Frequency conversion wireless microphone system and its automatic frequency scanning method

A wireless microphone and automatic frequency scanning technology, applied in the field of microphones, can solve problems such as intermodulation interference, troublesome microphone distribution work, and microphone interference, and achieve the effect of avoiding modulation interference, avoiding intermodulation interference, and convenient use

Active Publication Date: 2022-02-11
深圳市创视微智能技术有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, in the process of radio wave transmission, intermodulation interference will be generated, and the new frequency generated by intermodulation will cause interference to other microphones.
So at the same time, it is necessary to avoid intermodulation interference, which is very troublesome for the distribution of the microphone.

Method used

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  • Frequency conversion wireless microphone system and its automatic frequency scanning method
  • Frequency conversion wireless microphone system and its automatic frequency scanning method
  • Frequency conversion wireless microphone system and its automatic frequency scanning method

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Embodiment Construction

[0035] In order to express the present invention more clearly, the present invention will be further described below in conjunction with the accompanying drawings.

[0036] see Figure 1-3 , the frequency conversion wireless microphone system of the present invention includes a UHF transmitter 10 and a UHF receiver 11, the UHF receiver 11 is a USB Dongle device, and wireless two-way communication is used between the UHF transmitter 10 and the UHF receiver 11; the UHF receiver 11 includes Housing 111, the USB plug 112 that is arranged on the front end of housing 111 and the receiving end single-chip microcomputer 113, UHF receiving chip 114 and USB audio chip 115 placed in the housing 111, the communication end of receiving end single-chip microcomputer 113 is wireless with UHF transmitting end 10 Two-way connection, the UHF receiving chip 114 is provided with a MUTE pin, the MUTE pin of the UHF receiving chip 114 is connected to the input end of the receiving end microcontroll...

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PUM

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Abstract

The invention discloses a frequency conversion wireless microphone system and an automatic frequency scanning method thereof. The system includes a UHF transmitting end and a UHF receiving end, the UHF receiving end is a USB Dongle device, and the UHF transmitting end and the UHF receiving end communicate through wireless two-way; The UHF receiving end includes a housing, a USB plug arranged at the front end of the housing, a receiving single-chip microcomputer placed in the housing, a UHF receiving chip and a USB audio chip. There is a MUTE pin on it, the MUTE pin of the UHF receiving chip is connected to the input end of the receiving end microcontroller, the UHF receiving chip is interactively connected with the receiving end microcontroller, and the output end of the UHF receiving chip is connected to the USB plug through the USB audio chip. The invention can automatically convert frequency, automatically stagger frequency and avoid intermodulation interference, without artificially adjusting and interfering with the frequency of the microphone and the receiving end, thereby ensuring that the working frequency of the microphone in each room is staggered.

Description

technical field [0001] The invention relates to the technical field of microphones, in particular to a frequency conversion wireless microphone system and an automatic frequency scanning method thereof. Background technique [0002] In the existing wireless microphone system, the frequency points of the transmitter and the receiver are fixed or manually adjusted. Since the working frequency band of the currently used wireless microphone is generally the VHF band or the UHF band, the frequency is fixed, or the frequency is adjusted manually, we hereby refer to it as a fixed-frequency microphone. Because VHF band or UHF band signal has a long transmission distance (up to 5-30 meters in an open place) and strong wall penetration ability (can penetrate 2-4 walls), if this fixed-frequency microphone is used in some KTV private rooms When the microphones are allocated and distributed, it is more troublesome, because if the frequency points of two pairs of microphones in a certain...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R3/00H04R1/08
CPCH04R1/08H04R3/00H04R2430/00
Inventor 王建忠胡慧君
Owner 深圳市创视微智能技术有限公司
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