Voice signal processing system and method with active noise reduction

Abstract

The invention relates to the technical field of electronic communications, in particular to a voice signal processing system. The voice signal processing system with active noise reduction comprises a microphone, an inverse operation unit, a mixing unit and a loudspeaker, wherein the microphone is used for acquiring an environmental noise and converting the acquired environmental noise into an electric signal; the inverse operation unit is connected with an output end of the microphone, and used for performing an inverse operation on the electric signal in order to form an inverse noise signal; the mixing unit is connected with an output end of the inverse operation unit, and used for mixing the inverse noise signal with an audio signal to be played of a playing unit in order to obtain a mixed signal; the loudspeaker is connected with an output end of the mixing unit, and used for playing the mixed signal; and the inverse noise signal in the mixed signal is counteracted with the environmental noise in order to realize noise reduction. Through adoption of the voice signal processing system, the environmental noise can be eliminated actively, and a headset design is simplified, so that the system cost is lowered to the maximum extent while noise reduction is realized.

Description

technical field [0001] The invention relates to the technical field of electronic communication, in particular to a voice signal processing system. Background technique [0002] When users use ordinary headphones to listen to music in a noisy environment, they usually increase the volume to cover the noise. However, listening to music at high volume for a long time will cause auditory fatigue and hearing damage. Noise-cancelling earphones in the prior art are mainly divided into passive noise-cancelling earphones and active noise-cancelling earphones. Passive noise-cancelling headphones mainly block noise through sound-insulating materials, which can isolate noise to a certain extent, but the effect is not good. Active noise-canceling headphones place a microphone near the left speaker and the right speaker respectively, and set a lithium battery and a dedicated voice processing chip in the headphone device to achieve noise reduction. However, too many functional units are ...

AI Technical Summary

Problems solved by technology

Passive noise-cancelling headphones mainly block noise through sound-insulating materials, which can isolate noise to a certain extent, but the effect is not good

Active noise-canceling headphones place a microphone near the left speaker and the right speaker respectively, and set a lithium battery and a dedicated voice processing chip in the headphone device to achieve noise reduction. However, too many functional units are directly set in the headphone device. It makes the structure of the earphone complex, the volume is larger, and the cost of the noise-canceling earphone is increased

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