At 01:27 PM 5/18/2005, Philip Pemberton wrote: >I figured it would be for something like that. Might be good for determining >the rotational speed too. Speaking of which, I need to find out what speed >these tapes are usually run at (in normal rec/play mode). Standard cassette tape runs at 1 and 7/8 inches per second (IPS). Some high-end cassette decks could run them at double speed (3.75 IPS). These are all based on the early tape standard speed of 30 IPS, 15 IPS, 7.5 IPS, etc. I've still got an old Phillips deck that runs from 15 IPS down to 15/16 IPS. Old broadcast logging machines run at that speed (15/16 IPS) as well. Many fond and some not so fond memories coming back - I used to look after all the tape decks (multiple racks full of Ampex 350 decks) at one of the local radio stations as well as the multi-track and 2 track mastering decks several of the recording studios here in town. Interesting to see what happens when the closed-loop servo controls go ballistic while shuttling full reels of 2" multi-track tape at full speed (not pretty). dwayne -- Dwayne Reid Trinity Electronics Systems Ltd Edmonton, AB, CANADA (780) 489-3199 voice (780) 487-6397 fax Celebrating 21 years of Engineering Innovation (1984 - 2005) .-. .-. .-. .-. .-. .-. .-. .-. .-. .- `-' `-' `-' `-' `-' `-' `-' `-' `-' Do NOT send unsolicited commercial email to this email address. This message neither grants consent to receive unsolicited commercial email nor is intended to solicit commercial email. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist