[Speex-dev] Re: Decoding

[Jean-Marc Valin]

Le samedi 04 juin 2005 à 23:38 -0500, Dragon a écrit :
> It's not playing at half speed... It's playing at 2x speed.

That exactly what I mean, if you play a mono stream to a soundcard set
to stereo, it'll play twice as fast.

>    -Dragon
> 
> Jean-Marc Valin wrote:
> > If it plays at half the speed, it means that either you're setting the
> > sampling rate wrong or (if you're using Linux) the machine at the other
> > end is using the broken i810 OSS audio driver which can't set itself to
> > mono. About writing code properly, just look at speexenc/speexdec if you
> > want to have an example of Ogg transport.
> > 
> > 	Jean-Marc
> > 
> > Le samedi 04 juin 2005 à 23:29 -0500, Dragon a écrit :
> > 
> >>What do you mean by write my code properly? With the way it's written 
> >>right now it is encoding writing out to a stream and decoding from that 
> >>stream but i'd like to use VBR but when i try it my app fails. and also 
> >>on a different note I've written some test apps where it recordes from 
> >>the mic encodes decodes then playes but when i try streaming it over the 
> >>internet it has long pauses in it and plays at like twice the speed, 
> >>which i belive that is why i'm getting the pause. I've tried changing 
> >>settings but can never fix the problem.
> >>
> >>Jean-Marc Valin wrote:
> >>
> >>>What do you mean by knowing the frame size? Technically, all Speex
> >>>frames are 20 ms long. If you mean knowing the number of frames in a
> >>>packet of the number of compressed bytes, then the answer is no, as long
> >>>as you write your code properly.
> >>>
> >>>	Jean-Marc
> >>>
> >>>Le samedi 04 juin 2005 à 22:56 -0500, Dragon a écrit :
> >>>
> >>>
> >>>>One quick question. Does the decoder have to know the frame size for 
> >>>>each encoded packet? right now i have a program streaming encoded data. 
> >>>>Do i need to have it add in the length for each packet size?
> >>>>
> >>>>  -Dragon
> >>>>
> >>>>_______________________________________________
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> >>>>http://lists.xiph.org/mailman/listinfo/speex-dev
> >>>>
> >>
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> >>
> 
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-- 
Jean-Marc Valin <Jean-Marc.Valin at USherbrooke.ca>
Université de Sherbrooke