Method for suppressing voice noise of mobile phone

Abstract

The present invention relates to a voice noise suppression method for a mobile phone, which pertains to the mobile phone technology. The method includes: establishing a receiver, wherein the distance between the receiver and a receiver of mobile telephone using the method makes the energy of the obtained voice in mobile phone receiver greater than that of the obtained voice in the receiver, and the noise energy obtained by the two receiver is in the same order of magnitude; respectively receiving analog signals of the two receivers, and converting analog signals into digital signals; converting the two output digital signals into frequency domain signals; detecting the voice activation state according to the frequency domain signals; inhibiting noise based on the voice activation state to obtain the noise-inhibiting frequency domain signals; and outputing useful voice signals after converting the frequency domain signals into time domain signals. The present invention not only has characteristics of a simple structure, easy to achieve, low-cost, significant inhibitory effect of the mobile phone voice noise, and facilitating the implementation and the development; but also could be applied to any occasion.

Description

technical field [0001] The invention belongs to the technical field of mobile phones, in particular to a method for suppressing noise in speech in mobile phones. Background technique [0002] In addition to being used in quiet environments, mobile phones are often used in noisy environments. For example, at a cocktail party, a mobile phone is often used. [0003] Voice from the other party can be heard clearly on mobile phones with better noise shielding. A simple example is that the speaker of a mobile phone can be shaped in the biological shape of the human ear for maximum physical isolation from noise. However, the other party may not be able to hear the voice clearly in a noisy environment. [0004] So people invented the receiver array to provide more voice information to better suppress noise. For example, multiple microphones are often used in convention venues to deliver clearer speech to the audience. [0005] The U.S. Patent (Patent No.: 5,754,665) titled "Noi...

AI Technical Summary

Problems solved by technology

But in principle, its technical solution may not be effective in suppressing large-scale noise, such as radio broadcasts or music, so it may not be suitable for noisy public places with constant noise or cocktail parties with performances

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