De-noising method and de-noising device for mechanical noise of microphone

Abstract

The embodiment of the invention provides a de-noising method, which comprises the following steps of: acquiring a sound signal in air, wherein the sound signal comprises a mechanical noise signal and a voice signal; acquiring the mechanical vibration data of a microphone by using a sensor which is arranged in the microphone; performing operation according to the mechanical vibration data of the microphone, and thus obtaining a vibration characteristic signal, wherein the vibration characteristic signal comprises a vibration characteristic waveform; and eliminating the mechanical noise signal which is acquired by the microphone according to the obtained vibration characteristic signal. Correspondingly, the embodiment of the invention also provides the microphone. By adoption of the invention, the mechanical vibration of the microphone can be sensed by using the sensor which is arranged on the microphone, the vibration characteristic signal is obtained according to the mechanical vibration, and the mechanical noise signal which is generated by the mechanical vibration and brought by airborne transmission is eliminated, so the microphone can be de-noised.

Description

technical field [0001] The present invention relates to the field of electronic technology, in particular to a noise elimination method and device. Background technique [0002] The existing noise cancellation technology usually eliminates the noise in the air on the sounding device, but for the microphone (Microphone, also known as the microphone or microphone), especially the microphone built in the portable terminal or on the vehicle often receives the mechanical vibration. For example, the microphone itself is caused by the cable, friction, vibration, touch, etc. of the device, or the vibration, vibration, collision, etc. of the device or equipment that is fixed with the microphone. These noises are easy to distinguish and have a great impact on However, since the normal speech signal and the noise signal generated by mechanical vibration cannot be separated, it is difficult to eliminate the noise caused by mechanical vibration received by the current microphone. Conte...

AI Technical Summary

Problems solved by technology

[0002] The existing noise cancellation technology usually eliminates the noise in the air on the sounding device, but for the microphone (Microphone, also known as the microphone or microphone), especially the microphone built in the portable terminal or on the vehicle often receives the mechanical vibration. For example, the microphone itself is caused by the cable, friction, vibration, touch, etc. of the device, or the vibration, vibration, collision, etc. of the device or equipment that is fixed with the microphone. These noises are easy to distinguish and have a great impact on Sound transmission effect, but because the normal voice signal and the noise signal generated by mechanical vibration cannot be separated, it is difficult to eliminate the noise caused by mechanical vibration received by the current microphone

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