发明申请
- 专利标题： Audio decoding apparatus and audio decoding method
- 专利标题（中）： 音频解码装置和音频解码方法
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申请号： US10491894申请日： 2003-07-30
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公开(公告)号： US20050080621A1公开(公告)日： 2005-04-14
- 发明人: Mineo Tsushima , Naoya Tanaka , Takeshi Norimatsu , Kok Chong , Kim Kuah , Sua Neo , Toshiyuki Nomura , Osamu Shimada , Yuichiro Takamizawa , Masahiro Serizawa
- 申请人： Mineo Tsushima , Naoya Tanaka , Takeshi Norimatsu , Kok Chong , Kim Kuah , Sua Neo , Toshiyuki Nomura , Osamu Shimada , Yuichiro Takamizawa , Masahiro Serizawa
- 优先权： JP2002-225068 20020801
- 国际申请： PCT/JP03/09646 WO 20030730
- 主分类号： G10L19/08
- IPC分类号： G10L19/08 ; H03M7/30 ; G10L19/02
摘要：
A wideband, high quality audio signal is decoded with few calculations at a low bitrate. Unwanted spectrum components accompanying sinusoidal signal injection by a synthesis subband filter built with real-value operations are suppressed by inserting a suppression signal to subbands adjacent to the subband to which the sine wave is injected. This makes it possible to inject a desired sinusoid with few calculations.
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