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ARSCLIST  August 2008

ARSCLIST August 2008

Subject:

Re: Restoration of broken records...

From:

"[log in to unmask]" <[log in to unmask]>

Reply-To:

[log in to unmask]

Date:

Thu, 28 Aug 2008 11:00:01 -0500

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (111 lines)

Maybe he would do a presentation at the next ARSC Conference, or someone 
might do one on his techniques?

joe salerno


Dr. Cheryl Thurber wrote:
> Cheryl Thurber wrote:
> I was glad to see the name Jim Cooprider pop up.  Back in the 1970s when I lived in Southern California I knew Jim. He had been working on solutions for broken records for years prior to that. I learned several techniques from him for various types of records 
> (a duco-cement technique for older 78s, and MEK for post WWII records.) I am sure he has evolved his techniques even more since then. IF someone is in contact with him it would be good to try to get him to write out his approach and recommendations, and to post the information here, as well as a website. 
> 
> Dr. Cheryl Thurber 
> 
> email: [log in to unmask]
> 
> --- On Thu, 8/28/08, Dan Nelson <[log in to unmask]> wrote:
> 
> From: Dan Nelson <[log in to unmask]>
> Subject: [ARSCLIST] Restoration of broken records...
> To: [log in to unmask]
> Date: Thursday, August 28, 2008, 1:53 AM
> 
> Not long ago  the UCLA  film archives restored a unique  4 reel silent/sound 
> picture
> from Columbia, The Barker.
> some portions of the movie were typical silent  and  2 reels included sound.
> The
> Sound was contained on 2  16" inch shellac 33 1/3 rpm discs. After the 
> film
> was restored it was almost a lost cause to find  the  sound discs... 
> ultimately
> a set was found with the disc for the last reel in 4-5 pieces.
> Thanks to the skill of  Jim Cooprider, a member of  California Antique
> Phonograph
> Society, the pieces were glued together, the grooves matched, a disc to digital
> 
> was made  and  a final dub to a film soundtrack  allowed this early 1920s 
> partial
> sound movie to  be  re-released.
> don ward 
>  
> -----Original Message-----
>> From: Graham Newton <[log in to unmask]>
>> Sent: Aug 27, 2008 7:16 PM
>> To: [log in to unmask], [log in to unmask],
> [log in to unmask]
>> Subject: [Beautiful-Instrumentals] 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
>>
> 
> 
>       
> 

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