On Wed, 2010-12-01 at 14:47 -0500, V G wrote: > On Wed, Dec 1, 2010 at 12:41 PM, Michael Watterson wro= te: >=20 > > no. the Microphone will be an electret. > > There is an integrated USB sound card. >=20 >=20 > That's what I mean. I might be able to use the PIC32 as a USB host and > process the signal and re-output the signal through a USB slave or a DAC. Or you could, as has been suggested, open up the headset, and put a very simple low pass filter in. All that work for something that could be solved with a resistor and cap? I just don't understand the motivation. TTYL --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .