-
公开(公告)号：EP0940015A1
公开(公告)日：1999-09-08
申请号：EP98921697.0
申请日：1998-06-09
发明人： LILJERYD, Lars, Gustaf , EKSTRAND, Per, Rune, Albin , HENN, Lars, Fredrik , KJÖRLING, Hans, Magnus, Kristofer
CPC分类号： G10L21/038 , H04B1/667
摘要： The present invention proposes a new method and apparatus for the enhancement of source coding systems. The invention employs bandwidth reduction (101) prior to or in the encoder (103), followed by spectral-band replication (105) at the decoder (107). This is accomplished by the use of new transposition methods, in combination with spectral envelope adjustments. Reduced bitrate at a given perceptual quality or an improved perceptual quality at a given bitrate is offered. The invention is preferably integrated in a hardware or software codec, but can also be implemented as a separate processor in combination with a codec. The invention offers substantial improvements practically independent of codec type and technological progress.
搜索结果
1 条记录 (耗时 0.008 秒)
筛选
AND
AND
过滤
NOT
NOT
扫码加群
