> And you need to be sure that your ADs, amps and speaker are
> perfectly linear and don't produce products in the < 20 kHz
> band when given ultrasonic signals only. For the speakers
> that will be near to impossible.
Ohhh, yes, IMD and air itself will introduce IMD. I forgot all about that.
Monty
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Received on Fri Apr 16 00:15:03 2010
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