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Squeak prevention program control device for loudspeaking system

A program-controlled, anti-whistling technology, applied in frequency/direction characteristic devices, transducer circuits, sensors, etc., can solve the problems of high cost, unsatisfactory and incomplete anti-whistling effect, etc., to ensure sound quality, improve user experience, Eliminate the effect of howling possible

Inactive Publication Date: 2016-12-14
张兴
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to overcome the problems that the existing anti-howling equipment has high cost and requires professional operation, and the anti-howling effect is not ideal and not thorough, the present invention provides a program-controlled anti-howling system for the amplification system. device

Method used

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  • Squeak prevention program control device for loudspeaking system
  • Squeak prevention program control device for loudspeaking system
  • Squeak prevention program control device for loudspeaking system

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Embodiment Construction

[0023] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0024] Such as figure 1 As shown, the program-controlled device for anti-howling of the amplification system of the present invention includes the following hardware components: a microphone signal input interface 101, a bias amplifier circuit 102, an analog-to-digital converter 103, a program-controlled module 104, a digital-to-analog converter 105 and an audio signal In the output interface 106, each piece of hardware is sequentially connected on the circuit.

[0025] Wherein, the microphone signal input interface 101 refers to a circuit port node, which is connected to a direct signal of a microphone or an indirect microphone signal converted therefrom. W...

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Abstract

The invention relates to a squeak prevention program control device for a loudspeaking system. The device comprises a microphone signal input interface, a bias amplifier circuit, an analog to digital converter, a program control module, a digital to analog converter and an audio signal output module. According to the program control module, a loudspeaker feedback signal received by a microphone is enabled to be an inverted signal through programming, a customized weak signal is dynamically removed according to a squeak analysis result, the received signal is dynamically changed to a delay value of a loudspeaker, finally, squeak is avoided, and a certain denoising effect is realized.

Description

technical field [0001] The invention relates to the technical field of audio equipment denoising, in particular to a program-controlled device for preventing howling of an amplification system. Background technique [0002] In modern social life, the use of microphones has become more common. Such as meetings, reports, karaoke, program hosting, concerts, etc. In the application occasions of various microphones, only a few are equipped with high-cost anti-howling equipment that requires professional operation. Most of the time, the microphone will inevitably produce howling during use, causing interference to the use occasion. [0003] The reason for the howling of the microphone is that when the microphone is opposite to the speaker and the distance is relatively close, when the direct signal received by the microphone and the reflected signal from the speaker in all directions exceed the environmental signal, it is easy to form a loop effect, and finally the previous sign...

Claims

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Application Information

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IPC IPC(8): H04R3/00H04R1/20
CPCH04R1/20H04R3/00H04R3/007
Inventor 张兴
Owner 张兴
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