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Discussion Groups | Speech Coding | Transcoder between G.729 & AMR & G.723.1
Technical discussions related to Speech Coding (all itu and other vocoders, ACELP, CELP, AMR, etc)
Transcoder between G.729 & AMR & G.723.1 - gray_1024 - Mar 28 8:15:00 2003
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I'm now doing a transcoder between G.729 & G.723.1. Considering the conversion of pitch delay, since G.723.1 encodes speech with 30ms frames, while G.729 with 20ms frames, how can i do? I attempt to convert the pitch delay using linear interpolation, but the performace is not good enough. Throgh transcoding the test speech quality deteriorate. And I also don't want to decode the speech signal and then do the pitch estimation, considering about the comlexity and time comsume. Thanks. Hoping for any suggestion. |
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