In general, I agree with this advice. I certainly do for LPs. I realize 
the perceived need to speed up the process, but, IMHO, you are better 
off doing two or three real time transfers in parallel than speeding up 
a single transfer.

There are some specific instances where I transfer at 
different-than-recorded speed:

(1) Micro and mini cassettes: I load them into standard cassette shells 
and then transfer at 1.88 in/s, slowing down the recording by a factor 
of 2 or 4 for the micro cassette and using a pitch mapping program for 
mini cassettes.

(2) Logging tapes: I transfer them at the slowest speed I can on 
whatever reel machine can be fitted with the proper head. I then slow 
down as needed. These sounded terrible reproduced on machines designed 
for the purpose back in the day.

(3) Instrumentation tapes: I optimize the on-tape bandwidth to the audio 
converter bandwidth and then adjust in playback. Faster than real time 
allows extended low frequency response inherent in FM channels...but if 
I transfer FM for later demodulation, I will sometimes need to transfer 
at slower than real time to capture the carrier and its upper excursions.

(4) Squealing reel tapes: Sometimes these can be made to not squeal by 
running them at 2x or 4x recorded speed.

Just a few thoughts to munch on.



On 2017-08-09 1:43 PM, Gary A. Galo wrote:
> Lou is absolutely right - real time is the only sensible thing to do, for any and all media.
> Gary
> ____________________________
> Gary Galo
> Audio Engineer Emeritus
> The Crane School of Music
> SUNY at Potsdam, NY 13676
> "Great art presupposes the alert mind of the educated listener."
> Arnold Schoenberg
> "A true artist doesn't want to be admired, he wants to be believed."
> Igor Markevitch
> -----Original Message-----
> From: Association for Recorded Sound Discussion List [mailto:[log in to unmask]] On Behalf Of Lou Judson
> Sent: Wednesday, August 09, 2017 1:40 PM
> To: [log in to unmask]
> Subject: Re: [ARSCLIST] Transferring LPs at 78 RPM
> Why would one do that? You lose the accurate RIAA (or other) curve, and probably damage both the groove and the stylus, plus losing the high frequencies... Don't do it! And with the ratio of 2.34 (...) would you get the pitch just right digitally?
> I get paid by the hour, so I'd do it realtime. I transfer everything I do at realtime...
> <L>
> Lou Judson
> Intuitive Audio
> 415-883-2689
> On Aug 9, 2017, at 10:15 AM, 6295LARGE . <[log in to unmask]> wrote:
>> Hello everyone
>> If I transfer a vinyl LP at 78 RPM then slow it down to proper speed
>> do I lose anything?
>> Regards,
>> Ben Roth
Richard L. Hess                   email: [log in to unmask]
Aurora, Ontario, Canada                             647 479 2800
Quality tape transfers -- even from hard-to-play tapes.