发明名称 |
Method for processing speech signal data and finding a filter coefficient |
摘要 |
Method and computing apparatus for processing speech signal data. A speech signal is divided into frames. Each frame is characterized by a frame number T representing a unique interval of time. Each speech signal is characterized by a power spectrum with respect to frame T and frequency band omega. A speech segment and a reverberation segment of the speech signal is determined. L filter coefficients W(k) (k=1, 2, . . . , L) respectively corresponding to L frames immediately preceding frame T are computed such that the L filter coefficients minimize a function Phi that is a linear combination of sum of squares of a residual speech power in the reverberation segment and a sum of squares of a subtracted speech power in the speech segment. The computed L filter coefficients are stored within storage media of the computing apparatus.
|
申请公布号 |
US7590526(B2) |
申请公布日期 |
2009.09.15 |
申请号 |
US20070834756 |
申请日期 |
2007.08.07 |
申请人 |
NUANCE COMMUNICATIONS, INC. |
发明人 |
FUKUDA TAKASHI;ICHIKAWA OSAMU;NISHIMURA MASAFUMI |
分类号 |
G10L19/14;G10L21/02 |
主分类号 |
G10L19/14 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|