What you seeing with bursts of activity by the mech is to do with the 40
second shock memory. The memory is not only to take account of bad reading
of the disc due to vibration but it allows the mech to save power and in
the case of battery operated devices save significant amounts of power.
This burst of activity also happens on record (On my SONY MRZ-50) and
sometimes ruining recordings. I record birdsong and have to have the
recorder well insulated sound wise from the microphone otherwise the manic
whirring of the mech is piucked up on the recording.
br
keith parker
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"Gerard Naude" <[EMAIL PROTECTED]>@amulation.com on 08/03/2001 14:17:44
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Subject: MD: Read ahead on MD. Maybe someone can explain...
I own a JVC XM-R70, which ever since I bought it have not had one single
complaint. In anyway, when I listen to a MD without skipping around too
much, I notice that the md starts playing the desired track. Then it reads
like crazy for say 10 seconds. Then suddenly it stops all mechanical
movement completely (while the music is still playing). It continues to
play
music for a while (+/- 30 seconds), then it spins up again for a while,
then
shuts down again. This continues for the duration of the disc. The unit
also
has a built in 40 second anti-shock. Does this mean the unit buffers more
than 40 seconds, maybe like even 1:30, and only spins up when it needs more
data? (While keeping a anti shock buffer as well).
Can anybody shed some light on this. Is this a standard procedure on all MD
recorders?
Gerard Naude
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