Scott Manley wrote:
>
> > >We're trying to figure out why Real Audio signals
> > >seem to degrade (flanging, smacking, etc.) over
> > >excessive router hops, while our MP3 streams
> > >seem to suffer less (until they lose sync & pop
> > >if it's too bad). Does anyone have any technical
> > >reasons why the Real Audio stream or decoder
> > >might cause this effect?
> >
> > I'd say the main difference is that most real audio streams are UDP, and most MP3
> > streams are TCP
>
> I think it's because the real audio format makes a point of spreading bits
> from 'frame' of audio across many packets, so that if a packet is lost then
> there is still audio for that section, just at a lower quality.
>
That seems to correspond with our observations - is there
anywhere to get more technical details on how this is actually
done? (Granted, most MP3 encodings have inter-frame dependence
as well, maybe not as harsh as Real Audio).
Thanks,
Bill
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