[Speex-dev] about the parameter of plc_tuning.

Jean-Marc Valin jean-marc.valin at usherbrooke.ca
Thu Apr 24 04:20:29 PDT 2008


cat tanger a écrit :
>  hi,i have two questions.
>  
> 1. i dont know how to use the parameter of  plc_tuning,
> in 20% packets loss net condition what value it set?

If you expect 20% loss, you can set the PLC parameter to 20. Don't
expect that to make a huge difference though.

> 2. one (A) use  16.8K (quality = 5) ,the other (B) use 20.6k (quality = 6) .
>  i find  A sound with clutter. why?

16.8 kbps (and below) allocates very few bits to the high frequencies
and actually have to do spectral folding. That's probably why you don't
like it.

Cheers,

	Jean-Marc


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