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MMD > Archives > June 2001 > 2001.06.05 > 12Prev  Next


Removing Noise From Old Phono Disc Recordings
By Robin Cherry

Jeffrey Borinsky invited me to comment and normally I am a few days
late reading the list in which time any thread has run its course.
But not this time.

I don't disagree with the earlier comments and would suggest that Joyce
contact a specialist stylus provider for advice on which stylus size
to try.  It is important to check whether the present cartridge and arm
could cope with, say an elliptical stylus for stereo use.  Blunter
points are not good coping with the higher frequencies at 33 rpm
turntable speed.

Phillips and Marantz made de-clickers based on a Phillips chip which
can reduce larger clicks caused by groove damage and can be useful for
a slight improvement and also give a digital output.  However clicks
are often turned into plops and small tics are not touched.

Cedar and Sonic Solutions are very expensive to buy but could be hired
for a topnotch result.  Roland make a dynamic noise reducer.  Cool
Edit Pro and other software programmes contain click suppression but
may require quite a degree of patience while you try different
threshold settings so that the music itself is not affected (too much).
Creamware software from Germany is apparently pretty good.

Obviously the files are not worked on in real time.  It depends on the
speed of your computer and the complexity of the task.  It is better to
play in straight from your preamplified turntable.  Predubbing to DAT
is probably okay depending on the quality of the A-to-D conversion, but
don't use cassette or mini disc because the ability of software to
recognise clicks can be severely reduced.

Robin Cherry

 [ Robin worked many years in Engineering at BBC Radio & TV services.
 [ -- Robbie


(Message sent Tue 5 Jun 2001, 17:03:32 GMT, from time zone GMT+0100.)

Key Words in Subject:  Disc, Noise, Old, Phono, Recordings, Removing

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