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Microphone echo elimination method, device and equipment and computer storage medium

An echo cancellation and microphone technology, which is applied in frequency/direction characteristic devices, speech analysis, instruments, etc., and can solve the problem of incomplete echo cancellation of microphones.

Active Publication Date: 2020-03-27
GOERTEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a microphone echo cancellation method, device, equipment and computer storage medium, aiming to solve the current technical problem of incomplete microphone echo cancellation

Method used

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  • Microphone echo elimination method, device and equipment and computer storage medium
  • Microphone echo elimination method, device and equipment and computer storage medium
  • Microphone echo elimination method, device and equipment and computer storage medium

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Embodiment Construction

[0050] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0051] like figure 1 as shown, figure 1 It is the terminal of the hardware operating environment involved in the solution of the embodiment of the present invention (also called the microphone echo canceling device, wherein the microphone echo canceling device can be composed of a separate microphone echo canceling device, or can be composed of other devices and the microphone echo canceling device Formation) Schematic diagram of the structure.

[0052] The terminal in the embodiment of the present invention can be a fixed terminal or a mobile terminal, such as an intelligent air conditioner with a networking function, an intelligent light, an intelligent power supply, an intelligent speaker, an automatic driving car, a PC (personal computer), a smart phone, a tablet computer , e-book readers, portable computers, et...

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Abstract

The invention discloses a microphone echo elimination method, the method is applied to a terminal, the terminal comprises a loudspeaker and a microphone which are in communication connection, and themicrophone comprises a main microphone and an auxiliary microphone. The method comprises the following steps that a loudspeaker receives an audio signal to generate vibration, and the loudspeaker vibrates to generate sound waves and cause vibration of a machine shell; the main microphone picks up the sound wave to obtain a first signal, the main microphone picks up the casing vibration to obtain asecond signal, and the auxiliary microphone picks up the casing vibration to obtain a third signal; the echo in the first signal is eliminated according to a preset algorithm, the second signal is processed according to the third signal, and the echo in the second signal is eliminated; and the first signal after echo cancellation and the second signal after echo cancellation are synthesized and output. The invention further discloses a microphone echo elimination device and equipment and a computer storage medium. According to the invention, the accuracy of microphone echo elimination is improved.

Description

technical field [0001] The invention relates to the field of sound signal processing, in particular to a microphone echo cancellation method, device, equipment and computer storage medium. Background technique [0002] With the development of science and technology and the continuous progress of society, there are more and more applications of terminal equipment. The terminal device collects and plays sound through a microphone and a speaker. When the microphone and the speaker work together, echoes often occur. The echo is caused by the sound of the speaker being fed back to the microphone multiple times. [0003] The traditional echo cancellation is to install an integrated chip in the terminal circuit, transmit the signal to the integrated chip, use a unified algorithm mechanism for debugging, and compare the voice signal with the broadcast sound signal to eliminate it. Such an echo cancellation algorithm will still The effect of echo processing is not complete. Conten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/28G10L21/0216
CPCG10L21/0216G10L2021/02082G10L2021/02165H04R1/2807
Inventor 杨明凯齐永涛赵燕鹏徐敏龙
Owner GOERTEK INC
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