On Fri, Apr 07, 2006 at 12:37:41PM +0930, Tom Cook wrote:
> For 1, low latency is critical. You want as little delay between the sound
> hitting the mic and it being returned to the speakers as possible. If the
> delay becomes noticeable to the ear, you're in trouble. Also any processing
> you do in the loop adds to the delay, so you can't eat the whole delay
> budget in your digitizer. Ethernet is simply not good enough
I'm not so sure about that. TCP/IP maybe isn't good enough, but
that's not the only low-level protocol that Ethernet can carry. A 480-bit
frame (10 audio channels with 32-bit data, ECC, and 20% overhead) would take
4.8 uS to transmit. That's about the time it takes sound to travel 1/16"
through air, or about 1.5 mm.
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