"Laurence Payne" wrote in
message
On Wed, 22 Sep 2004 09:07:43 +1000, "David White"
wrote:

Thanks for the responses. There are some promising ideas there.
Locking onto a buzz or the bias would do the trick very well.

I was going to suggest using the bias signal, but had assumed that it
was too high in frequency to get recorded. Is it in fact recorded?

Yes, and there are accounts on the web of commercial audio applications of
bias recovery for the purpose of speed correction.

Would it need a special playback head to retrieve it?

I believe that the specific example I am thinking of used a special playback
head. However, playing the tape at a low speed could work as well.

If possible, this would seem the ideal system.

In the cases I'm thinking of, the demos showed dramatic improvements.

After some searching around, I found the web page I was thinking of:

http://www.plangentprocesses.com/


Here's the RAP thread that brought this to my attention:

http://groups.google.com/groups?selm...nix2.panix.com

Credit to the encyclopedic audio knowledge of Scott Dorsey (again!). ;-)