ON 20050715@11:13:11 AM at page: http://www.piclist.com/techref/microchip/io/audio.htm#38547.2020949074 James Newton[JMN-EFP-786] removed post 38547.2020949074 |Delete ' hi Im currently working on an siren application and I have problem with sound, I m going to generate sound on any port pin that will change about 700Hz to 1700 hz in frquancy around 5 seconds. but resulting sound is not werl well. do anyone know basic crierias of direct sound on pic can help me.