That sounds almost like you're describing some sort of error correction on
a piece of vinyl...
Such a two-tracked record could be played on a deck with a two-needle arm,
the distance between needle tips equalling the distance between groove
valleys. The advanced deck would be less susceptible to bumps *and* able to
take the two signals and subtract noise from either, like a pair of
chromosomes. Something like that could be "complete without surface
noise"...
:: Alex
quoted 5 lines My question is: has anyone made a record with two parallel grooves that>My question is: has anyone made a record with two parallel grooves that
>spiral inward between each other that have different tracks with the same
>bpm that have the their cue points line up, such that if the needle skips
>to the other track (the one in parallel, not one groove ahead or behind)
>it is still in time and in sync? Whew!
__________________________________________________________________________
Alex Reynolds Distributed Support Specialist
Department of Biology School of Arts & Sciences Computing
University of Pennsylvania Philadelphia, PA
email:reynolda@sas.upenn.edu phone:215.573.2818