andy_c wrote:
By most standards, the SPDIF signal is just barely in the RF world, or
at least not in serious RF mode. There are only 1.5 mega bits per
second, just above the AM radio band.
Just to nitpick a bit, the bandwidth in the analog domain is determined
by the required rise time of the pulses, not by the number of pulses per
unit time. As you go to very fast rise times, the equivalent bandwidth
becomes much larger than the bits per second of the serial data stream.
Right
And signaling rate is not the same as bandwidth or data rate when you
get serious. But fast rise times allows more transitions, which usually
means higher signaling rates, which allows more data per unit of time.
The key point is that SPDIF is not at rates that cause RF engineers to
lose much sleep. Deal with 2.4 gHz to pick a random number that I curse
with every day, and it takes some engineering.
The analog dudes, down in the 20-20kHz range have it so easy.
--
Pat
http://www.pfarrell.com/music/slimserver/slimsoftware.html
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