A new 8-32 kb/s wideband embedded variable bit-rate speech coding algorithm - 文章详情页

作者：

Liu, Ze-Xin (Liu, Ze-Xin.) | Bao, Chang-Chun (Bao, Chang-Chun.) (学者：鲍长春) | Jia, Mao-Shen (Jia, Mao-Shen.)

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摘要：

A　five　layers　wideband　embedded　variable　bit-rate　speech　coding　algorithm　at　8-32　kb/s　was　proposed　in　this　paper　based　on　algebraic　code-excited　linear　prediction　(ACELP)　and　transform　coded　excitation　(TCX)　speech　coding　techniques.　The　first　three　layers　at　8　kb/s,　12　kb/s　and　16　kb/s　are　embedded　by　ACELP　coding　model,　while　the　last　two　layers　at　24　kb/s　and　32　kb/s　are　embedded　with　TCX　technique.　The　test　result　indicates　that　the　quality　of　the　embedded　speech　coding　algorithm　with　five　layers　is　close　to　Terms　of　Reference　(TOR)　for　ITU-T　G.　VBR　codec　for　clean　speech,　speech　with　office　noise　and　switching　between　layers.

关键词：

Bits Mathematical transformations Speech coding

作者机构：

[ 1 ] [Liu, Ze-Xin]Speech and Audio Signal Processing Lab., Beijing University of Technology, Beijing 100022, China
[ 2 ] [Bao, Chang-Chun]Speech and Audio Signal Processing Lab., Beijing University of Technology, Beijing 100022, China
[ 3 ] [Jia, Mao-Shen]Speech and Audio Signal Processing Lab., Beijing University of Technology, Beijing 100022, China

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