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Another suggestion is to record the disc at a slower speed. You'll find a 
greater clarity as a result and the time constant for the click will be much 
less. Whatever your noise reduction software doesn't get you can remove with 
a wave editor.   When you look at the waveform of a click you'll find a 
small click followed by a low frequency wave following it. You need to see 
where the volume drops back down to normal and process the entire area.
I never delete clicks but using the fade in/ fade out function of your wave 
editor, you simply reduce the volume of the disturbance by blocking the area 
of the click-setting the block so that one edge is at the highest part of 
the click  then fade in or out using a setting of 10% (reducing by 90%) - 
this always needs to be done as a dual process, grabbing the block and 
dragging it to the other side of the disturbance. It's a bit tricky   as you 
don't want to move the block but flip it around so that it shades the other 
side of the click. Doing this, you can remove an infinite number of clicks 
without changing the length of the audio file at all. I believe this process 
is called 're-drawing'. -Mickey Clark






----- Original Message ----- 
From: "John Haley" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, November 22, 2013 10:01 AM
Subject: Re: [ARSCLIST] Repair of Broken Record


> Hi, Lisa,
>
> I have had to do the same.  I don't think you will be able to "restore" 
> the
> record to it's former state as an artifact, but it is very possible to
> recover the info in the grooves.  In short, you take a flat board that is
> larger than the record and put two large nails or screws in it a few 
> inches
> apart. Then you have a platform on which to put the record pieces to glue
> them back together with Crazy Glue (or its equivalent).  Put the largest
> piece up against the nails or screws and place the other piece(s) where it
> goes, being VERY careful to line up the grooves correctly.  You are able 
> to
> press it against the larger piece which is held in place by resting up
> against the nails (screws).  And be careful to align the pieces in the
> horizontal plane (getting them flat together).  I would not put any glue 
> in
> the groove area if you can help it, attaching the pieces with dots of glue
> on the outer edge and in the inner part past the end of the record or in
> the label area.  If that isn't possible and you must use glue in the 
> groove
> area, use the smallest amount possible on the edges to stick, without
> oozing over into the grooves on either side of the record.  Let it dry and
> move it as carefully as possible to your turntable and make a good digital
> dub to a .WAV file.  The record may come apart thereafter but all you need
> is one good playing, capturing everything that is in the grooves.  You 
> will
> probably hear lots of clacks as the stylus passes over the edges, and you
> will have to remove those on the computer with a .wav editor.  That's a
> good deal of work, but it is generally possible if you have aligned up the
> grooves right.  I am good at this myself.  Removing the clacks will
> generally need to be done manually, carefully matching up the .WAV form to
> avoid new noises at the joins (there is definitely an art to this).  The
> clacks are so short that their removal will usually have no audible effect
> on the musical content, but if that is a problem (where a clack is
> unusually long), you can always stretch a note just slightly (we are
> talking thousandths of a second here) to make it right.  I believe that
> most computerized click and pop removal programs will not be able to deal
> well with loud clacks.
>
> Best,
> John Haley
>
>
>
> On Fri, Nov 22, 2013 at 8:55 AM, Mason Vander Lugt <[log in to unmask]> 
> wrote:
>
>> Hi Lisa,
>>
>> As Lou suggested for cylinders in 'Phonograph Wax Cylinder Repair?'
>> earlier this month, optical
>> reformatting might be an option for retrieving the sound from your broken
>> disc.
>>
>> The Northeast Document Conservation Center is currently working on making
>> this service available to
>> the public. We anticipate we'll be ready to begin taking orders summer
>> 2014. I can't guarantee we'll
>> be able to work with your recording, and the service won't be cheap at
>> first, but if your recording is
>> very important, there may be ways to fund the transfer.
>>
>> If you'd like more information about our (anticipated) service, you can
>> read our announcement online
>> at http://www.nedcc.org/audio-preservation or message me off list.
>>
>> Mason Vander Lugt
>> Audio Preservation Specialist
>> Northeast Document Conservation Center
>> 978-470-1010
>>
> 


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