[mythtv-users] Way out idea on watching same thing in multiple rooms

David Brodbeck gull at gull.us
Tue Jan 5 00:14:00 UTC 2010

On Mon, January 4, 2010 4:06 pm, Eric Sharkey wrote:
> On Mon, Jan 4, 2010 at 6:23 PM, Greg Oliver <oliver.greg at gmail.com> wrote:
>> Even with long hdmi cables or speaker wires, you are still adding
>> latency just like ethernet would have
> No.  Ethernet packets are a store-and-forward technology.  The delays
> are caused by the hardware in the switches and end points that have to
> stop, buffer, and analyze each packet, not in the propagation time on
> the wire.  With analog speaker wire there is none of that.

This is true, although the delays are still quite short -- in a
fully-switched network that's not overloaded you're usually talking a few
milliseconds at most.  This is roughly equal to the delay you'd get by
standing one meter away from the speaker.

This is, however, enough time for an analog signal to travel about 800
kilometers down a speaker wire. ;)

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