> If there is no ready-made design, perhaps someone who is interested in > knocking one up for a suitable fee can contact me off-list. Seems not too difficult, I guess the surrounding stuff (how do you set the frequencies? which kind of D/A do you use? how many steps per sine? how are the frequencies set?) are more work than the sine generation itself. I could do this, but you might not find my rate suitable :( BTW to allow people to contact you an email address would be suitable :) Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: www.voti.nl consultancy, development, PICmicro products -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics