发明名称 |
STATIONARY SPECTRAL POWER DEPENDENT AUDIO ENHANCEMENT SYSTEM |
摘要 |
An audio enhancement system (1) for speech recognition or voice control is described, comprising a signal input for carrying a distorted desired signal (z), a reference signal input, and a spectral processor (SP) coupled to both signal inputs for processing the distorted desired signal (z) by means of a reference signal (x) acting as an estimate for the distortion of the desired signal. The spectral processor (SP) is equipped for said processing such that a factor C' is determined, whereby said estimate is a function of the factor C' times the spectral power of the reference signal (x), and the factor C is determined as the spectral ratio between those components of the signals z and x, which are essentially stationary with time. Such a factor determined by stationary parts of those signals makes application of a critical speech detector in the audio enhancement system superfluous. |
申请公布号 |
WO2004004297(A2) |
申请公布日期 |
2004.01.08 |
申请号 |
WO2003IB02823 |
申请日期 |
2003.06.19 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V.;ROOVERS, DAVID, A., C., M. |
发明人 |
ROOVERS, DAVID, A., C., M. |
分类号 |
G10L15/20;G10L21/02;G10L21/0208;G10L21/0216;H04M9/08;H04R1/20;H04R3/00 |
主分类号 |
G10L15/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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