[78-L] Audacity and off-center transfers

[BURNHAM]

CEDAR has a program that will do an impressive job of removing wow!  I put a 45 rpm disc on the turntable so that the inner edge of the large spindle hole was up against the small normal spindle so that the eccentricity of the rotating disc was wildly off and played it through the CEDAR program and the record played with no audible wow whatsoever!  The only drawback of this program is that it’s VERY expensive!!

Sent from my iPhone

> On Mar 10, 2022, at 19:44, Dustin Wittmann <dpwittmann at gmail.com.invalid> wrote:
> 
> 
> Definitely don't make off-center transfers to begin with. I use three
> rubber mats on my new Technics SP-10R and can raise my tonearm high enough
> (plus VTA adjustment) to manually center any record. Timestep sells
> modified Technics tables, too, with truncated spindles for a pretty
> reasonable price for serious archivists. There are also the belt-driven Rek
> O Kut tables sold by Esoteric Sound. I have my trusty Rondine 3 up on eBay
> now, for what it's worth.
> 
> I've never had any problems with records moving even without spindle
> support. There's always a record clamp.
> 
> Remember, too, that if you digitize a record at slow speed, you need to do
> it flat and then add EQ after re-pitching. If the EQ is present before
> that, it will be in the wrong wrong place!
> 
> CEDAR Cambridge has a re-speed plugin that can re-pitch records based on
> any number of observable factors in the spectrum, but you don't want to
> rely on that...few can afford it. I just blew a lot of future record budget
> on a system and plan to use it on many of the records that suffer from
> inconsistent lathe speeds.
> 
> Dustin Wittmann
> 
>> On Thu, Mar 10, 2022, 6:21 PM Malcolm <malcolm at 78data.com.invalid> wrote:
>> 
>> 
>> I use a piece of 1/4" Styrofoam sheet cut to 12" diameter. Punch or cut
>> or ream out a hole in the center just big enough to fit over your
>> turntable spindle. Put the adapter on the table. The spindle should be
>> hidden in the hole. Place an off-center (78rpm) record on the adapter
>> with the center holes lining up  The friction between the styro and the
>> record will be enough to hold the record stationary on the styro no
>> matter what speed you're going to play it at. Run the table initially at
>> 33 or 45 and adjust the record by gently tapping along its edge until
>> the groove no longer wanders and tracks straight. Then you can play the
>> record at it's normal speed when digitizing.
>> I use a Technics SP-15 table and this trick works every time.
>> I've never lost a record due to it's being flung off the machine!
>> I don't think Audacity or Audition have an algorithm that allows the
>> digital repair of an off-center disc. At least they didn't a few years
>> back.
>> Malcolm R
>> 
>> *******
>> 
>>> On 3/10/2022 1:58 PM, Rodger J Holtin wrote:
>>> Just picked up a CD of Teddy Wilson Columbias (booklet missing, of
>> course)
>>> and the first track is off-center.  Rust shows that title as unissued, so
>>> the source might be a one-only.  C'est la vie.
>>> 
>>> 
>>> 
>>> I've learned a lot of tricks with Audacity and I'm going to guess
>> there's a
>>> fix for regular pitch changes such as those wrought by off-center 78s,
>> but I
>>> haven't figured it out yet.
>>> 
>>> 
>>> 
>>> Anybody else mastered that technique?
>>> 
>>> 
>>> 
>>> Rodger Holtin
>>> 
>>> 78-L Member Since MCMXCVIII
>>> 
>>> 
>>> 
>>> For Best Results Use Victor Needles
>>> 
>>> 
>>> 
>>> 
>>> 
>> 
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