demodulating audio cassette wav files

[Jim Battle]

Richard A. Cini wrote:

> Chuck:
> 
> 	You may want to look at Jim Battle's SOL emulator project
> (http://www.thebattles.net) for inspiration. I haven't looked at the code
> recently, but IIRC it has a software-based method for demodulating WAV
> files.
> 
> Rich

my sol emulator has virtual tapes and a virtual tape player.  i've 
wanted to write a really good tape decoder, but it hasn't been high 
enough priority to displace other projects.

Ed somebody in australia wrote a kansas city/cuts decoder/encoder 
program.  I was able to get the thing to decode the tape waveforms that 
it generates, but I've tried a few real Sol tapes and I can't get them 
to decode.  I sent Ed a sample and he said something along the lines of 
"I can decode the tapes I generate, so there is probably a problem with 
your tape."  well, in the real world, these tapes do have problems, so 
the value is in being able to decode even poor tapes.