Displaying 5 results from an estimated 5 matches for "729i".
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2007 May 04
2
Signaling tones in Speex
Hi all,
Has anyone tried conveying signaling tones (DTMF) through speex? If so, can
i get an idea of the lowest bit-rate at which I can do so with 'tolerable
distortion'. G.728 does so and G.729E (11.8 Kbps mode) is 'claimed' to do so
but even if true, G.729 (rather G.729I - 11.8/8/6.4 kbps) does not allow me
to go below 6.4 kbps 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 meth...
2007 May 06
2
Signaling tones in Speex
...signaling tones (DTMF) through speex? If so,
> can
> > i get an idea of the lowest bit-rate at which I can do so with
> 'tolerable
> > distortion'. G.728 does so and G.729E (11.8 Kbps mode) is 'claimed' to
> > do so
> > but even if true, G.729 (rather G.729I - 11.8/8/6.4 kbps) does not allow
> me
> > to go below 6.4 kbps 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...
2007 May 07
1
Signaling tones in Speex
...can
> > > i get an idea of the lowest bit-rate at which I can do so with
> > 'tolerable
> > > distortion'. G.728 does so and G.729E (11.8 Kbps mode) is
> 'claimed' to
> > > do so
> > > but even if true, G.729 (rather G.729I - 11.8/8/6.4 kbps) does not
> > allow me
> > > to go below 6.4 kbps 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 h...
2007 May 04
0
Signaling tones in Speex
...t; Has anyone tried conveying signaling tones (DTMF) through speex? If so, can
> i get an idea of the lowest bit-rate at which I can do so with 'tolerable
> distortion'. G.728 does so and G.729E (11.8 Kbps mode) is 'claimed' to
> do so
> but even if true, G.729 (rather G.729I - 11.8/8/6.4 kbps) does not allow me
> to go below 6.4 kbps 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/o...
2007 May 06
0
Signaling tones in Speex
...hrough speex?
> If so, can
> > i get an idea of the lowest bit-rate at which I can do so with
> 'tolerable
> > distortion'. G.728 does so and G.729E (11.8 Kbps mode) is 'claimed' to
> > do so
> > but even if true, G.729 (rather G.729I - 11.8/8/6.4 kbps) does not
> allow me
> > to go below 6.4 kbps 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...