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How to separate 1 waveform composed of two tracks
In rec.audio.pro, (james) wrote:
In article ,
Ben Nguyen wrote:
I wouldnt mind tinkering with a spare cassette deck if it might do the trick,
but Im not sure whats involved.
The azimuth is the one 'obvious' screw adjustment in cassette
decks, and effectively varies high frequency respose. Adjust some
other screw(s) for head height, then adjust azimuth for the most
treble.
If you play it on a stereo deck, do you get the crosstalk in both
channels? If not, the solution should be obvious.
Since it's a cassette (with two adjacent stereo tracks each
direction), when played back on a stereo deck, one of the stereo
channels really should have the material in the forward direction
without any in the reverse. If not, then it is a REALLY messed up
tape. Play it in an 8-track cassette machine such as the Tascam 238,
and pick the best sounding channel...
Otherwise, I'm sticking to my first suggestion, adjust the head geometry
so that it isn't reading both tracks. Sometimes the azimuth screw
gives enough range to do it.
If adjusting the azimuth moves the head far enough, it probably
also tilts it enough to cut the HF response to maybe 400 Hz.... 
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http://mindspring.com/~benbradley
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