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Hello, thank you for responding. I'm sure I'm confusing something, but I did not explicitly set either kHz or kbps, I just set the mode to narrowband, and traced through libspeex's code to see that sample_rate was 8000 something, I'm guessing Hz. My assumption was: if you set PA to nb-mode, then you should encode 160 bytes to 21. Is that mistaken? ys On 6/13/07, Jean-Marc Valin

Hi, I am developing a voip phone that uses speex v1.2b1 narrowband mode. Libspeex decodes the 21-byte packets I recieve into 160 bytes and I can play them fine, but when I encode, the result is 38-bytes long. I have read that 38 bytes means that it is encoding at 15KHz, but I have set it to nb-mode and when stepping through the libspeex encoding sourcecode, I see that st->sampling_rate is