发明名称 |
Method and apparatus for noise suppression in a speech signal and corresponding system with echo cancellation |
摘要 |
<p>The method involves applying noisy input speech signals (S(t)) to a sampler (1a). The signal is divided, with part of the signal passed to a noisy signal processor (100). The processor extracts noisy energy signals (10) and passes them to an S/N ratio estimator (11). The signal is then passed to a gain calculation circuit (12) before input to a circuit determining the filter function coefficient. The output C(nT) from the filter function circuit is applied to a FIR filter (14) in the second channel.</p> |
申请公布号 |
EP0710947(B1) |
申请公布日期 |
2003.01.08 |
申请号 |
EP19950402385 |
申请日期 |
1995.10.25 |
申请人 |
ALCATEL |
发明人 |
BOURMEYSTER, IVAN;LEJAY, FREDERIC |
分类号 |
H03H21/00;G10L21/02;H04B3/21;H04B3/23;(IPC1-7):G10L21/02 |
主分类号 |
H03H21/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|