> 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 _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
