computer audio tape formats - test-drb@ccmp.vtda.org

18 Dec 2002

I seem to remember that eather "radio electronics" or
"rainbow" magazine had an article on how to build a
computer audio tape conditioner.

it was for the coco.

On Tuesday 17 December 2002 9:50 pm, tim lindner
wrote:
...
  I am looking for information regarding how various
computers wrote
...
  information to audio tapes.

 For example, the Tandy Color Computer wrote ones and zeros to audio 
tape
...
  in the following format:

 'one bit':  one sinusoidal cycle @ 2400 Hertz.
 'zero bit': one sinusoidal cycle @ 1200 Hertz.

 The bit rate is variable on a CoCo tape. But averages to about 1500 
bits
...
  per second.

 I am contemplating creating an audio tape anaylzer to help me recover
...
  some data. I would like to make the program useful
to thoes outside 
the
...
  Color Computer community. But first I need to
understand all of the
...
  different methods used to put data on audio tape.

--__--__--

__________________________________________________
Do you Yahoo!?
Yahoo! Mail Plus - Powerful. Affordable. Sign up now.
http://mailplus.yahoo.com