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Re: [ARSCLIST] Old reel to reel 'echo' problem



Hello, Melodie,

This is called "print through" where the signal on one layer of a tape impresses itself onto adjacent layers of the tape. In rare instances, you can hear things repeat more than once.

The time difference between the original and the image is once around the reel.

Sometimes this can be cured by winding the tape through and letting it sit for a few days.

There is a process--available only on the Studer A820 with late-version software--called "skimming" which puts a small erase current onto the tape in an attempt to erase only the easily modified magnetic domains (which are the ones that are modified to cause the print through).

I have yet to hear of any real successes in trying this though it has been discussed on various lists. I have not tried it.

Careful application of dynamics processing (compression and gating) in a DAW, plus sometimes editing at the beginning/end of a recording) can reduce the annoyance factor, or if done too much increase the annoyance factor. Never a nice thing. It was known from the beginning and is worse on speech which is why most of the dialogue recordings for films done on a reel-to-reel Nagra were done on special "low print" tapes. These weren't as "hot" for music, but did better for speech.

Cheers,

Richard

At 03:25 PM 2009-03-31, Frances, Melodie wrote:
All,

I am not even sure 'echo' is the correct term, but with our old reel to
reel tapes (and I have had this experience with personal cassettes),
there is this thing I am calling echo - where what the person says is
repeated at a fairly low level - you can usually only really hear it
when there is silence - and it is basically a repeat of what had just
been said - so not really a echo but more like a delayed repetition. Is
this a head cleaning problem? Or a problem that can be fixed? Does
anyone even know what I'm talking about, and if so, what is it called?

Thanks


Melodie Morgan Frances Head of Cataloging Graduate Theological Union mfrances@xxxxxxx 510-649-2521

-----Original Message-----
From: Association for Recorded Sound Discussion List
[mailto:ARSCLIST@xxxxxxx] On Behalf Of Eric Jacobs
Sent: Thursday, March 12, 2009 10:06 AM
To: ARSCLIST@xxxxxxxxxxxxxxxx
Subject: [ARSCLIST] Digital archiving and OAIS SIP implementation

How many organizations reading this list accept audio preservation
SIPs from outside of your organization?

If so, I'd like to hear from you as we look to deliver more
complete audio preservation packages that consist of more than
just a WAVE or BWF file.

Eric Jacobs

The Audio Archive, Inc.
tel: 408.221.2128
fax: 408.549.9867
mailto:EricJ@xxxxxxxxxxxxxxxxxxx
http://www.TheAudioArchive.com
Disc and Tape Audio Transfer Services and Preservation Consulting

Richard L. Hess email: richard@xxxxxxxxxxxxxxx
Aurora, Ontario, Canada (905) 713 6733 1-877-TAPE-FIX
Detailed contact information: http://www.richardhess.com/tape/contact.htm
Quality tape transfers -- even from hard-to-play tapes.



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