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Sat Jan 1 15:07:48 EST 2011

Minimal digital processing setup

What does a digital EQ cost in components?  The processing itself is
probably cheap, but the anti-aliasing and reconstruction doesn't seem
to be.  For building circuits with multiple A <-> D conversions a
better approach is necessary.

This probably requires programmable logic.  It is possible to do
fairly decent sigma/delta SD and class D D/A on an FPGA with very
simple external circuits.  For uC circuits I'm afraid that there isn't
enough serial speed to pull this off in an efficient way
(i.e. multiple channels).





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