[Speex-dev] about Speex's PLC

Jean-Marc Valin jean-marc.valin at usherbrooke.ca
Tue Nov 18 04:14:38 PST 2008


後藤 由光 a écrit :
> I have read the mailing list archives and have a question regarding PLC
> (packet loss concealment).
> From my understanding, PLC is usually done on the receiving side but it
> seems Speex is doing PLC
> from the sender side. Sorry if I missed something but is there
> documentaions on how the PLC is
> done on Speex?

No, there's no way to do PLC on the sender side. What you probably got
confused about is the SPEEX_SET_PLC_TUNING parameter on the encoder.
That's just a way to trade error-free quality for more packet loss
robustness. The PLC is still done on the decoder side by assing NULL to
the "bits" argument.

	Jean-Marc


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