Opal G.729 FrameSamples doubt
- From: Mohd Mazhar Moinuddin <mazharmoinuddinm (at) danlawinc.com>
- Date: Thu, 2 Feb 2006 11:21:19 +0530
On Sunday 29 Jan 2006 5:31 pm, openh323-request (at) openh323.org wrote:
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>
> >> enum {
> >> FrameSize = 10,
> >> FrameSamples = 80
> >> };
> >> Opal_G729_PCM::Opal_G729_PCM()
> >>
> >> : OpalFramedTranscoder(OpalG729, OpalPCM16, FrameSize, FrameSamples
>
> * 2)
>
> I am confused why the FrameSamples is set to 160. Isn't it supposed to
> be 20 bytes per 10 ms?
>
>
> Joegen
The FrameSize/FrameSamples depend on the Codecrate u r operating. For a 10ms
rate the No. of bytes in a729 frame are 10 [not 20] and the FrameSamples are
80. [with an 8k sampling rate u get 80 samples for a 10ms duration ]
regards
Mohd. Mazhar Moinuddin
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