[Speex-dev] interpolation of lost frames

Steve Kann stevek at stevek.com
Tue Sep 7 11:00:45 PDT 2004

Kleijn, J.S. de wrote:

>When an audiopacket is received too late I could interpolate this frame. The problem is that I don't know if it is a true bufferloss or just the last audiopacket of a talkspurt. Now my question is if it's harmfull for the audioquality that at the end of the talkspurt one frame is interpolated? Or would this be almost inpossible to hear since the last audiopacket in the talkspurt already is about silent? This obviously depends on how speex interpolates a frame.

You should try it, and let everyone know :)

I would suspect that it wouldn't be a problem.

However, you always have the option, in whatever protocol you use, of 
indicating the end of the talkspurt, so that the receiver can know the 
difference.  SIP, for example, has a "comfort noise" thing that does this.


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