[speex-dev] Framesize for UWB vs. WB encoding

[Christian Buchner]

Hi there.

I am having a little trouble understanding the frame sizes chosen
by the codec.

testenc_uwb.c from the speex-1.0 source distribution has a framesize
of 640 hardcoded and makes use of this value exclusively.

However, a mode query on the actual codec returns 320 as a framesize
for this mode.

   int tmp;
   speex_mode_query(&speex_uwb_mode, SPEEX_MODE_FRAME_SIZE, &tmp);

<p>testenc_wb.c from the speex-1.0 source distribution has a framesize
of 320 hardcoded and makes use of this value exclusively.

However, a mode query on the actual codec returns 160 as a framesize
for this mode.

   int tmp;
   speex_mode_query(&speex_wb_mode, SPEEX_MODE_FRAME_SIZE, &tmp);

How can this discrepancy be explained?

Could anyone shed some light here? ;) thanks.

Christian

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