Momentum Data Systems has published an on-line DSP tutorial at: I don't work for these guys. Just thought some PICLIST subscribers would be interested... Mike Hardwick Decade Engineering Mike Hardwick, for Decade Engineering Tel: 503-743-3194 ~ Fax: 503-743-2095 Post: 5504 ValView Dr. SE, Turner, OR 97392 (USA) Email: mike@decadenet.com ~ Web: www.decadenet.com -- 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