发明名称 Method for reduction of aliasing introduced by spectral envelope adjustment in real-valued filterbanks
摘要 The present invention proposes a new method for improving the performance of a real-valued filterbank based spectral envelope adjuster. By adaptively locking the gain values for adjacent channels dependent on the sign of the channels, as defined in the application, reduced aliasing is achieved. Furthermore, the grouping of the channels during gain-calculation, gives an improved energy estimate of the real valued subband signals in the filterbank.
申请公布号 US7577570(B2) 申请公布日期 2009.08.18
申请号 US20030652397 申请日期 2003.08.29
申请人 CODING TECHNOLOGIES SWEDEN AB 发明人 KJOERLING KRISTOFER;VILLEMOES LARS
分类号 G10L19/00;G10L19/02;G10L25/18;G10L25/48;H03H17/02;H04B15/00 主分类号 G10L19/00
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