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...e. Just wondering if it is possible to extend this logic to G3 and G4 fax as well, i.e. using a higher bit-rate and complexity mode for modem or fax instead of going for a higher bit-rate ADPCM. If so, a one stop solution for all kinds of traffic would be awesome. Thanks a lot for the prompt reply, Mainak On 5/4/07, Jean-Marc Valin <jean-marc.valin@usherbrooke.ca> wrote: > > Hi Mainak, > > Speex will definitely be able to handle DTMF. The only question is what > the minimum rate for that will be. I remember testing on a few tones at > 8 kbps and I didn't hear too much di...

...uggest that the standard sloutions are to simply 'bypass' it else compress using ADPCM (40 k for fax upto 14.4 k, 32 k for fax upto 9.6 k and so on), both of which eat up a lot of bandwidth. So, speex sounds great! Once I start playing with the non-speech traffic will keep u posted. Cheers, Mainak On 5/7/07, Jean-Marc Valin <jean-marc.valin@usherbrooke.ca> wrote: > > Mainak Chakraborty wrote: > > Hi Jean, > > Thats great news for me to start off with as I was planning to go with > > 16 Kbps ADPCM keeping in mind the issues and options I had. Now, whether > &...

...if needed. Basically I am looking for a single codec which would allow me to play with multiple (low) bit-rates within voice and switch to a higher bit-rate upon detecting a signaling tone instead of using RFC 2833/out-of-band signaling methods. I hope speex is the solution am looking for! Regards, Mainak PS: In any case I will have to test it out myself but a positive answer to this query would definelty brighten up the road ahead :-) -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/speex-dev/attachments/20070504/4dc07473/attachment-00...

Mainak Chakraborty wrote: > Hi Jean, > Thats great news for me to start off with as I was planning to go with > 16 Kbps ADPCM keeping in mind the issues and options I had. Now, whether > the additional computation cost is worth the significant bandwidth > savings, I have to see. > Just w...

Hi Mainak, Speex will definitely be able to handle DTMF. The only question is what the minimum rate for that will be. I remember testing on a few tones at 8 kbps and I didn't hear too much distortion (though there have have been). The only thing I can recommend is to use a higher complexity setting that...