RE: [AVT] I-D ACTION:draft-ietf-avt-variable-rate-audio-00.txt

["Stephan Wenger" <stewe at stewe.org>]

Hi Qiaobing Xie,

-----Original Message-----
From: avt-bounces at ietf.org [mailto:avt-bounces at ietf.org] On Behalf Of
Qiaobing Xie


> I like this solution and the draft summaries the issue/benefits very well.


Thanks for the flowers :-)

>...
>>   *  Is it a good idea to require ALL future I-Ds on audio (not only
>>      the variable clock frequency ones) to use the uRTR?
>>   *  Or only those that do not fit the uRTR (fit == subset of prime
>>      factors)?
>...
>
> Or, we can make uRTR a standard _option_ to all payloads - e.g., whenever
> rate param is set to 192kHz (or whatever value we end up with), it would 
> mean that uRTR is in use, if rate is set to any other value, it implies
> that the actual sampling rate is in use.

I don't like optional mechanisms very much -- they are not good for
interoperability, and increase the implementation burden.

Also, what would you do as a receiver if you get a-law with 192 kHz signaled
sample rate -- use 8 kHz (which would be the common use of a-law) or 192 kHz
(which would be a perfectly legal use case as well)?

Stephan



_______________________________________________
Audio/Video Transport Working Group
avt at ietf.org
https://www1.ietf.org/mailman/listinfo/avt