On Tue, Aug 11, 2009 at 10:10 PM, Tim Newsham <newsham@lava.net> wrote:
I'm not sure either latency or RT is proper terminology here. But
I believe what I meant was clear: when you need overall latency
to be around 5ms you start to notice 9P.

It sounds like you have a specific app in mind, and a real-time
one at that.  If you're using your audio device for live audio
(ie. adding effects to audio from your guitar)
you need pretty small latency.  You can go a bit higher than
5ms without noticing, though.

Most apps dont require realtime.  For example, streaming a song.
You dont care if the samples show up at year ear 2seconds
after they were sent from your hard drive, so long as all the
samples are delayed by the same amount..  You can stream this
clear across the country over all kinds of cut rate ISPs and
still get satisfactory results with enough buffering..

At which point that constant latency could be considered just a transmission delay :-).

VoIP seems to give consistent latency too, but latency for sure.... and it works just fine.
 


Roman.

Tim Newsham
http://www.thenewsh.com/~newsham/