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Any decent audio studio with a 1/4 mastering deck (Otari, Studer, Ampex) will have a vari-speed function that would allow you to adjust the speed + or - 15%. The problem with your tape is that only a mastering/archival lab has 3.75/ 7.5 machines. Art has the best solution for this kind of problem. Since it is not a "High Fidelity" recording why not simply play it at either fixed speed and adjust the playback speed digitally? We spoke about this thread before and I'm sure someone here will have a cost effective piece of software to suggest for this job... aa On Thursday, March 4, 2004, at 09:30 AM, Marie O'Connell wrote: > Recently, in our collection, I came across a 1/4 inch reel to reel tape > which has a spliced in section at the head. It has audio on it which > is > neither 3 3/4ips or 7 1/2ips, infact I think it is in the middle of > that > and could be 5.625ips! Is there such a speed? I was able to make out > the audio too which was very interesting, to say the least. The > unidentified person first sings a song, then goes on to apologise and > says you can erase this if you want and that he didn't have the heart > to > do it and then, says sorry if you are the person who has found it! He > also thinks the image of the police officer has gone upwards! > > With that aside, are there machines that play this speed? > > Regards > > Marie O'Connell > Sound Archivist > Mississippi Department of Archives & History > Ph: 601-576-6909 >