Method and apparatus of suppressing vocoder noise

摘要

A method and apparatus of suppressing a vocoder noise are provided. The method includes receiving from a channel decoder a vocoder frame and first information, the first information indicating whether the vocoder frame has an error, generating speech data by performing voice decoding on the vocoder frame, determining whether a tonal noise has been detected in the speech data, if the first information indicates that the vocoder frame has an error, and attenuating the volume of the speech data and outputting the volume-attenuated speech data through a speaker, upon detection of the tonal noise in the speech data.

主权项

1. A method of suppressing a vocoder noise, the method comprising:
receiving from a channel decoder a vocoder frame and first information, the first information indicating whether the vocoder frame has an error; generating speech data by performing voice-decoding on the vocoder frame to generate speech data; determining whether a tonal noise has been detected on the speech data, if the first information indicates that the vocoder frame has an error; reducing a volume of the speech data upon detection of the tonal noise on the speech data; and outputting the volume-reduced speech data to a speaker, wherein the determining comprises detecting the tonal noise on the speech data of the vocoder frame and a predicted speech data of a next vocoder frame by considering that the next vocoder frame is a bad frame.