> So if I'm understanding you correctly, it sounds to me like a 5% range > would be close enough, correct? That would be 1/20 interval, or slightly > less than a coma (1 full tone = 2 half tomes = 18 comas). Sorry, sorry, sorry! I made a huge mistake! A tone is divided in 8 microtones, so a half tone is divided in 4 microtones. It's also easyer to compute and the accuracy is acceptable for a begginer (0.5Hz). If he will need more accuracy in the future you'll see at that time. I think the ideea with the build in metronome is very good and practical too. How did I came up with 9? Don't ask me. I've been very clumbsy yesterday. (o:o) Mircea Chiriciuc EMCO INVEST -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads