[ARSCLIST] Fw: [ARSCLIST] Restoration of broken records...

[Dick Spottswood <dick@xxxxxxxx>]

Just for the record, the tune's from 1932, well past the silent film era. 
I think these records were for intermission use, probably to plug songs 
featured in the show.  My guess is that they were made at 33 rpm because 
it's the speed players in projection booths could handle.  With the same 
performance on both sides, you could play it in the dark without needing 
to know which side was which.

Nice restoration and reproduction too!

Dick


----- Forwarded by Dick Spottswood/dick/AmericanU on 08/27/2008 11:37 PM 
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Graham Newton <gn@xxxxxxxxxxxxxxxxxxxxx> 
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08/27/2008 10:16 PM
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Subject
[ARSCLIST] Restoration of broken records...






There has recently been some discussions of repairing a broken or cracked 
record.  Everyone seems to have their own pet solution to the problem of 
making 
the record play again, some come close, but none provides a fully restored 
result.

For some time, I have been intending to post an example of using CEDAR 
processes to restore a broken record and here it is.

This one is seriously cracked, but the process for a fully broken disc is 
essentially the same... get it into a playable condition and use 
computerized 
de-click and de-thump processes.

The source disc is a 10" American Record Corporation No. E 587 issued 
around
1930, for theater use.

Love, You Funny Thing! - Imperial Dance Orchestra

See label photo here:  http://www.audio-restoration.com/CIMG4743t.jpg

It was recorded at 33-1/3 rpm, transcription style inside start, with the 
same
tune on each side.  The disc has a large 1/2 moon crack in it with one end
still intact, but hold it up to light and you can see light through the
separated end!

See surface crack here:  http://www.audio-restoration.com/CIMG4746t.jpg

See entire crack here:  http://www.audio-restoration.com/CIMG4747t.jpg


Reasoning was, they were played by the projectionist to synchronize with
showing of a silent film.  Being shellac discs, and with the heavy weight 
of
the pickups and steel needles, the discs wore out very fast.  As one side
became noisy, the projectionist would order a new disc and start using the
remaining good side.

One pass used CEDAR de-clickle to remove the leading impulse clicks.
The remaining thumps were removed using CEDAR de-thump installed on SADiE 
5
workstation.

The two audio files can be lined up to see there is no timeline 
discontinuity
as there would otherwise be with conventional physical editing.

Here is the de-clicked file prior to de-thump being done:- 
http://www.audio-restoration.com/arc-e587-thumps.mp3

Here is the finished de-thumped file:-
http://www.audio-restoration.com/arc-e587-dethump.mp3



... Graham Newton

-- 
Audio Restoration by Graham Newton, http://www.audio-restoration.com
World class professional services applied to tape or phonograph records 
for
consumers and re-releases, featuring CEDAR's CAMBRIDGE processes.