More Sheeva plug experiments

I now have my 'plug acting as a simple data pump for its audio
subsytem–nearly-trivial Gnu Radio
flowgraph that copies the audio bandwidth over a UDP flow, using
16-bit “shorts”, the only thing it
does to the audio data is to multiply it by a constant passed in on
the command line to the flowgraph.

The little Sheeva plug is using about 7% of its CPU to do this.

So, it could handle multiple audio systems this way.

The SID receiver graph has a version that takes its input from a UDP
flow (via a named-pipe because of
some weirdness in the UDP Source block in Gnu Radio), and does all the
usual processing.

Food for thought…

Marcus L.
Principal Investigator
Shirleys Bay Radio Astronomy Consortium