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Re: [AVT] RE: <draft-ietf-avt-rtp-vmr-wb-03.txt>: sampling rate
Hi, Colin,
Colin Perkins wrote:
<snip>
In the VMR-WB case I would think that having only one timestamp rate
of 16kHz does not effect codec operation and would simplify the
handling when one has some senders that do use 8kHz, especially when
gateways need to encoded sometime 8kHz material from pre-recorded
responses and in other cases WB channel data. This do avoid the need
to perform RTP timestamp rate switches.
But in the process you make senders that support multiple codecs more
complex, since they can't use the sampling rate to drive the media clock
for all codecs.
I'd think that the saving (in terms of reduction to the system design and signaling
complexity) by avoiding performing RTP timestamp rate switches (as Magnus pointed out above)
far overweighs the ability of using the sampling rate to drive the media clock.
regards,
-Qiaobing
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