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Re: [RE] Compatibility with 802 and why the study group is not yet a task force



At 08:50 12/04/2005 +0100, Arthur Marris wrote:

[snip]

>iii) You need to come up with a quantitative requirement for jitter and
>relative latency and justify it. I saw the figure of 10us mentioned on
>the Yahoo mailing list. This is ridiculously tight. An 802.3 voter who
>is experienced in VOIP pointed out to me that even 1ms is too tight when
>you consider that sound only travels one foot in a millisecond. Once you
>have this requirement nailed a lot else will fall into place.

However, the requirements for

(a) performers listening over headphones to a mix that includes their own voice and

(b) forming a stereo or surround image from speakers that are individually (and independently) connected to the network

are more stringent than those for voice telephony.


John Grant
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