On 3/1/07, engineer@neomailbox.com wrote: > Warning: > > more than a few of us have tried this BTC idea without any success. My > research seemed to indicate that at least 3 bits are needed to cover > the dynamic range needed for almost any viable sound. > > So good luck. Keep us informed of your progress. > > --Bob > Last time this came up, I wrote a simulator that lets you judge the sound without building any circuit. Here it is: http://vivara.net/software/modulation_test/ There was a lot of good discussion last time. Here's a link to that thread: http://thread.gmane.org/gmane.comp.hardware.microcontrollers.pic/93686 Regards, Mark markrages@gmail -- You think that it is a secret, but it never has been one. - fortune cookie -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist