[Speex-dev] Openphone implementation of Speex Codec's descriptions help

Jean-Marc Valin Jean-Marc.Valin at USherbrooke.ca
Sat Mar 5 11:46:25 PST 2005


I honestly have no idea what the sw and Xiph "versions" are. It's still
the same codec, same quality and (approximately) same bit-rate. The only
difference is probably in the way the frames are packed and/or the way
the negotiation is made. The modes that have "Narrow" in them are of
course narrowband.

> In the design and implementation of Speex Codec's does the code contain any
> form of Pre and Post processing that may handle / curtail the loss of voice
> packets on the start of audio stream (turn-up) and the end of audio stream
> (tear-down) - our application may require constant stream interruption in
> each direction. I presume this type of processing may possible and or
> typically be accomplished outside of the Codec - appreciate your inputs.

I'm not sure what you mean here. 


Jean-Marc Valin <Jean-Marc.Valin at USherbrooke.ca>
Université de Sherbrooke

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