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...ell in MELPe. >> >> I've attached two outputs from speex: the decoded playback at normal >> speed, and the 2X speed version. >> >> Thanks, >> Bill >> > > > > -------------- next part -------------- A non-text attachment was scrubbed... Name: f2x.ogg Type: audio/ogg Size: 34216 bytes Desc: not available Url : http://lists.xiph.org/pipermail/speex-dev/attachments/20101019/06ebbb7c/attachment-0001.bin

You're asking the wrong question. The question is not "why does it would bad with Speex?", but "why does it sound good with LPC10 and MELP?". And the answer is that both are vocoders. Try dropping frames/subframes with anything else (Vorbis, MP3, G.729, u-law, ...) and it'll sound terrible as well. The only reason it sounds good with vocoders is because the