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-----Original Message-----
From: Association for Recorded Sound Discussion List [mailto:[log in to unmask]] On Behalf Of Shai Drori
Sent: Wednesday, September 10, 2014 9:09 AM
To: [log in to unmask]
Subject: Re: [ARSCLIST] recording "cleanup" plugins and 192/24

That's how I do it.
Shai
בתאריך 10/09/14 1:34 PM, ציטוט Andrew Dapuzzo:
> While I understand the importance of capturing output "above 20kHz" 
> with the aforementioned tools, are there any tools available to help 
> with azimuth adjustments?  Older recordings, especially those made in 
> the field with machines that have been "banged up", may be recorded 
> with azimuth that is slightly off.  Therefore, the higher frequencies 
> may be lost or diminished if playback is not adjusted to the exact 
> azimuth of the original recording.  Is the only tool available our 
> ears listening as we manually adjust the azimuth?
>
> On Fri, Aug 29, 2014 at 6:18 PM, John K. Chester <[log in to unmask]> wrote:
>
>> At 04:49 PM 8/29/2014, Tom Fine wrote:
>>
>>> John, is there a modification for to remove those noises? Do 3rd 
>>> party electronics also carry those noises or are they something with 
>>> the power rails under the transport? Sorry if these are ignorant 
>>> questions, I'm not that familiar with the innards of ATR's.
>>>
>> I suspect this is neither the list nor the proper subject heading for 
>> discussing such a highly technical issue, but here's a brief answer:
>>
>> I have never tried to clean up an ATR with stock electronics, 
>> although I have a good idea of where to start.  I have no data on 3rd 
>> party electronics other than Plangent's.  When I got the Plangent 
>> electronics to be clean enough for our purposes, I stopped worrying about the problem.
>> Plangent does use a preamp in the headblock with a cable running 
>> directly to our box, which helps keep things clean.
>>
>> I do find it a bit odd that folks doing 192k transfers often don't 
>> seem to worry about how much signal gets from the tape to the tape 
>> machine output above 20 kHz, and how much noise in that region comes 
>> from the machine rather than the tape.  There are useful signals up 
>> there, and we know that if the transfer captures them they can later 
>> be used to improve the quality of the audio below 20 kHz that we can actually hear.
>>
>> -- John Chester
>>
>>
>>
>>   ----- Original Message ----- From: "John K. Chester" 
>> <[log in to unmask]>
>>> To: <[log in to unmask]>
>>> Sent: Friday, August 29, 2014 4:33 PM
>>> Subject: Re: [ARSCLIST] recording "cleanup" plugins and 192/24
>>>
>>>
>>>   At 05:06 PM 8/29/2014, Shai Drori wrote:
>>>>> So if I turn the display off the 28.8 kHz goes away?
>>>>>
>>>> No, that noise on an ATR is actually coming from the reel motor 
>>>> drivers.  The display generates other noise which starts somewhere 
>>>> in the mid-50's of kHz and has lots of harmonics.
>>>>
>>>> Turning off the display removes a lot of the noise spikes in the 
>>>> audio output but not all of them.
>>>>
>>>> -- John Chester
>>>>

--
Cheers
Shai Drori
Timeless Recordings
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בברכה,
שי דרורי
מומחה לשימור והמרה של אודיו וידאו וסרטים 8-35 ממ.