Method and apparatus for reducing noise in voices of mobile terminal

摘要

The present invention discloses a method and an apparatus for reducing noise in voices of a mobile terminal and relates to the field of communications technologies, which can improve the effect of noise reduction. The method includes: selecting, from a voice headphone and a microphone built in the mobile terminal, a current communicating microphone and a current noise reducing microphone; obtaining an audio signal received by the current communicating microphone and an audio signal received by the current noise reducing microphone; performing noise reduction according to the audio signal received by the current communicating microphone and the audio signal received by the current noise reducing microphone, so as to obtain a noise reduced signal; and performing voice coding according to the noise reduced signal to generate an audio output signal.

主权项

1. A method for reducing noise in voices of a mobile terminal, the method comprising:
selecting, from a voice headphone and a microphone built in the mobile terminal, a current communicating microphone and a current noise reducing microphone according to audio energy levels of audio signals received by the voice headphone and the microphone, wherein each of the audio energy levels is a sum of one-period audio energies of the respective audio signal determined from audio signals sampled in each sampling period of a sampling time window, and wherein the one of the voice headphone and the microphone that receives the audio signal corresponding to the greater audio energy is selected as the current communicating microphone and the one of the voice headphone and the microphone that receives the audio signal corresponding to the smaller audio energy is selected as the current noise reducing microphone; obtaining an audio signal received by the current communicating microphone and an audio signal received by the current noise reducing microphone; performing noise reduction according to the audio signal received by the current communicating microphone and the audio signal received by the current noise reducing microphone, so as to obtain a noise reduced signal; and performing voice coding according to the noise reduced signal to generate an audio output signal.