| 摘要 |
The invention concerns a method whereby, before being subjected to a low rate voice coding, an incoming digital voice signal s(k) is chronologically segmented (101) into blocks (block, m) said blocks (block, m) are broken down (102) respectively, in chronological order, into frequency components f(i, m) by a transformation in the frequency range and said frequency components are multiplied by weight factors depending on the frequency and modifiable in time, a frequency component being multiplied by the last weight factor calculated for said frequency component if said factor is less than the current weight factor.
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