Try 5 mSec or so of a 1000 Hz square wave. It gives a decent "tick" sound. Jack -----Original Message----- From: pic microcontroller discussion list [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of William Chops Westfield Sent: Monday, April 07, 2003 5:55 PM To: PICLIST@MITVMA.MIT.EDU Subject: Re: [PIC]: A metronome project I've often wondered (ok, not THAT often) how to get a microcontoller to generate a convincing "tick" or "tock" sound out of a speaker. Little beeps are just ... inelegant, and simply driving the cone with DC seems like it would be too short... BillW -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.467 / Virus Database: 266 - Release Date: 4/1/2003 --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.467 / Virus Database: 266 - Release Date: 4/1/2003 -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads