18 Dec
2002
18 Dec
'02
3:44 p.m.
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.
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