I have been doing all my trasfers at 33 1/3 for quite a while now. One thing
I noticed is that a "click" impulse extends beyond the time of the actual
disturbance because of the resonance of the stylus assembly.
A recording job that came my way some time ago was that
of a 78 of the Dennis Shepherd Chorale , waxed about 1950. This record had
been brought into a sound place in Burnaby British Columbia by the wife of
one of the isngers. I imagine there were very few copies of this record, and
the technicians at the sound place dropped the record on the floor and broke
it in four pieces. They called me in a panic and asked if there was anything
I could do to restore it.
Crazy Glue came to the rescue to reassemble the record.
Of note - if you're repairing a record this way, it's best to limit the
adhesive to areas of the record outside the sound track - in this case, the
crack extending to the centre hole, and around the perimeter of the record.
Place wax paper onm a flat surface and assemble the record pieces, tapping
gently to thoroughly align them. I was successful at this stage and the
record was playable by this point.
The next step was to transfer the sound. Because of the
fact that a "click" develops a low frequency carrier wave extending a
fraction of a second, influences the following sound, I tried slowing the
transfer to make the disturbance more concise. I sampled at 22050 playing
the record at 33 1/3 then adjusted the sample rate to 51598 to bring the
speed to 78 rpm.
The next step is removing the substantial click of the
damage. I feel tha deleting sound from the file could be a problem, so I use
the fade in / fade out function of my wave editor to reduce the loudest part
of the click to 10 %, shading the entire area until the volume returned to
normal. This is quite easy to do, and removes even major clicks completely
without removing anything from the sound. Essentially it's akin to
equalizing a microscopic portion of the sound, de-emphasizing only the low
frequency part of the signal. Very effective and safe. Smaller clicks are
easily removed with Dartpro software.
I was amazed by the quality of the sound when I went
though this process and found the sound much fresher and smooth than when
the transfer was done at 78 rpm. After much experimentation, I have found
that most records benefit from this transfer process. One thing is that a
worn record will not benefit as much because it lessens the sound to noise
ratio. The equalization of RIAA seems to fit the 78 rpm record when it's
played at 33 1/3. One notable exception is some later Columbia records on
the blue label - touch up with EQ may be necessary for these. -Mickey Clark
Follow me on Twitter
https://twitter.com/MickeyRClark
M.C.Productions Vintage Recordings
710 Westminster Ave. West
Penticton BC
V2A 1K8
http://mcproductions.shawbiz.ca
----- Original Message -----
From: "Louis Hone" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, October 10, 2012 9:15 AM
Subject: Re: [ARSCLIST] What's the best way to remove surface noise on
Columbia Shellac (1930)?
> What do you use to bring it back to the right speed in your computer?
> I've
> never had much success with plugins. I always hear artifacts except on
> material that need less than one semitone correction.
>
> Louis Hone
>
> 2012/10/10 DAVID BURNHAM <[log in to unmask]>
>
>> One thing you have to be careful of when transferring at the wrong speed
>> is the playback characteristic. Since this is a frequency curve, playing
>> the record at the slower speed will displace the frequencies on the
>> curve.
>> One way to get around this, if your amp and workstation can do it, is to
>> record the disc flat, (no playback characteristic), and then generate the
>> appropriate curve in the computer after the record has been brought back
>> up
>> to speed.
>>
>> db
>>
>>
>>
>> >________________________________
>> > From: James Roth <[log in to unmask]>
>> >To: [log in to unmask]
>> >Sent: Wednesday, October 10, 2012 11:18:06 AM
>> >Subject: Re: [ARSCLIST] What's the best way to remove surface noise on
>> Columbia Shellac (1930)?
>> >
>> >Hello there, Mr. Clark,
>> >
>> >Thanks for your suggestion, but I transfer the records using a stereo
>> cartridge so that I can delete the noisier channel.
>> >That' sometimes gets rid of more than half the surface noise.
>> >I don't think your idea would work in this case.
>> >
>> >I'm going to try the other suggestion - to transfer at 33 1/3 rpm, then
>> increase the speed to the proper pitch.
>> >That might help to decrease or eliminate the "wooh-wooh" noise.
>> >
>> >I'll still have to experiment to find the best stylus for the job
>> (truncated, elliptical, conical, etc.).
>> >
>> >Regards,
>> >Ben Roth
>> >
>> >
>> >
>> >
>> >-----Original Message-----
>> >From: Association for Recorded Sound Discussion List [mailto:
>> [log in to unmask]] On Behalf Of Mickey Clark
>> >Sent: Tuesday, October 09, 2012 4:00 PM
>> >To: [log in to unmask]
>> >Subject: Re: [ARSCLIST] What's the best way to remove surface noise on
>> Columbia Shellac (1930)?
>> >
>> >Just convert the .wav file to mono. The vertical will be
>> eliminated-Mickey Follow me on Twitter
>> https://twitter.com/MickeyRClarkM.C.Productions Vintage Recordings
>> > 710 Westminster Ave. West
>> > Penticton BC
>> > V2A 1K8
>> >
>> >----- Original Message -----
>> >From: "Ted Kendall" <[log in to unmask]>
>> >To: <[log in to unmask]>
>> >Sent: Tuesday, October 09, 2012 11:30 AM
>> >Subject: Re: [ARSCLIST] What's the best way to remove surface noise on
>> Columbia Shellac (1930)?
>> >
>> >
>> >> On 09/10/2012 18:36, James Roth wrote:
>> >>> PLEASE TELL ME
>> >>> How does one cancel the vertical portion of the signal?
>> >>>
>> >>> Regards,
>> >>> Ben Roth
>> >>>
>> >>> -----Original Message-----
>> >>> From: Association for Recorded Sound Discussion List
>> >>> [mailto:[log in to unmask]] On Behalf Of Steven Smolian
>> >>> Sent: Tuesday, October 09, 2012 1:22 PM
>> >>> To: [log in to unmask]
>> >>> Subject: Re: [ARSCLIST] What's the best way to remove surface noise
>> >>> on Columbia Shellac (1930)?
>> >>>
>> >>> Are people not cancelling the vertical portion of the signal?
>> >>>
>> >>> Steve Smolian
>> >>>
>> >>>
>> >>> -----Original Message-----
>> >>> From: Association for Recorded Sound Discussion List
>> >>> [mailto:[log in to unmask]] On Behalf Of Mickey Clark
>> >>> Sent: Tuesday, October 09, 2012 1:11 PM
>> >>> To: [log in to unmask]
>> >>> Subject: Re: [ARSCLIST] What's the best way to remove surface noise
>> >>> on Columbia Shellac (1930)?
>> >>>
>> >>> Try a slow transfer at 33 1/3 - at the slower speed, your cartridge
>> >>> will follow the irregularities - it should be all low frequency
>> >>> noise.
>> >>> -cheers-Mickey Follow me on Twitter https://twitter.com/MickeyRClark
>> >>> M.C.Productions Vintage Recordings
>> >>> 710 Westminster Ave. West
>> >>> Penticton BC
>> >>> V2A 1K8
>> >>>
>> >>> ----- Original Message -----
>> >>> From: "James Roth" <[log in to unmask]>
>> >>> To: <[log in to unmask]>
>> >>> Sent: Tuesday, October 09, 2012 9:07 AM
>> >>> Subject: Re: [ARSCLIST] What's the best way to remove surface noise
>> >>> on Columbia Shellac (1930)?
>> >>>
>> >>>
>> >>>> Hello alls also.
>> >>>>
>> >>>> I had the same question about 1/2 year ago.
>> >>>> I have hundreds of those woow-woow surface noise Columbias.
>> >>>> I've tried 10 different styli - truncated/full conical, eliptical,
>> etc.
>> >>>> (Shure and Stanton) and the GE VRII cartridge with the 3 mil stylus.
>> >>>> ...but no luck.
>> >>>>
>> >>>> Regards,
>> >>>> Ben Roth
>> >>>>
>> >>>>
>> >>>> -----Original Message-----
>> >>>> From: Association for Recorded Sound Discussion List
>> >>>> [mailto:[log in to unmask]] On Behalf Of Raphaël PAREJO
>> >>>> Sent: Tuesday, October 09, 2012 11:01 AM
>> >>>> To: [log in to unmask]
>> >>>> Subject: [ARSCLIST] What's the best way to remove surface noise on
>> >>>> Columbia Shellac (1930)?
>> >>>>
>> >>>> Hello alls!
>> >>>>
>> >>>> I've a lot difficulties to resolve a problem of surface noise and
>> >>>> rumble on a Columbia shellac (circa 1930, electric recording) from
>> >>>> San Sebastian (Basque country) factory.
>> >>>>
>> >>>> What's the best ways to attenuate or remove this persistant noise ?
>> >>>>
>> >>>> I'm working on a Macintosh computer with Peak Pro 7 Editor and
>> >>>> several plugins as iZotope RX2, Oxford restoration suite, and also
>> >>>> the discontinued SoundSoap Pro 2. The results are not good.
>> >>>>
>> >>>> A colleague have tried to use Cedar 3000, but without good results.
>> >>>>
>> >>>> Some suggestions?
>> >>>>
>> >>>> regards.
>> >>>>
>> >>>> --
>> >>>> R. Parejo-Coudert
>> >>>>
>> >>>> Ethnomusicologue / Ethnomusicologist / Etnomusicólogo
>> >>>>
>> >>>> Anthropologie visuelle et sonore
>> >>>> Visual and Sound Anthropology
>> >>>> Antropología visual y sonora
>> >>>>
>> >>>> Archives sonores - Archivos sonoros - Sound Archives Restauration
>> >>>> audio - Restauración audio - Audio Restoration
>> >>>>
>> >>>>
>> >>>> °°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°
>> >>>> °°
>> >>>> °°
>> >>>>
>> >> Connect left and right channels of the pickup in parallel. The wanted
>> >> modulation is in the lateral direction, and all you are likely to get
>> >> in the vertical is pinch effect and rumble.
>> >>
>> >
>> >
>> >
>>
>
>
>
> --
> *sent from my ringing donkey*
>
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