Rotating memory data recovery

From: John Lawson <>
Date: Sat Sep 11 16:42:25 2004

   A simple method of sync would have to be worked out, but, being the
AnalogGeek(tm) that I am, I'd be tempted to record the bitstreams as
square-wave audio data to some kind of DAW software... perahps with a
small amount of roll-off (6dB/oct) coming out of the head amp would limit
the bandwidth and make the PC or Mac's soundcard happier..... if you
could get a 'whole drum after this pulse' (sort of like capturing one
video frame) sync set up, then you could record each track onto a similar
parallel track in the DAW.... later this can be 'played back' to recover
the data.... worst-case is that you have to inspect and slipsyunc
individual tracks....

  Recording this would be fairly tedious but apart from a high-speed
multi-track data-logger, It would get the job done.

   Gold-Wave would be a candidate for this, or the 'free' version of

   Another thought would be to use an external audio osc and power-amp to
slow down the drum motor and make it easier to record the track pulses and
index marks... run the motor at 10 Htz or so.


Received on Sat Sep 11 2004 - 16:42:25 BST

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