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
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.
At 03:25 PM 2009-03-31, Frances, Melodie wrote:
>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?
>Melodie Morgan Frances
>Head of Cataloging
>Graduate Theological Union
>[log in to unmask]
>From: Association for Recorded Sound Discussion List
>[mailto:[log in to unmask]] On Behalf Of Eric Jacobs
>Sent: Thursday, March 12, 2009 10:06 AM
>To: [log in to unmask]
>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.
>The Audio Archive, Inc.
>mailto:[log in to unmask]
>Disc and Tape Audio Transfer Services and Preservation Consulting
Richard L. Hess email: [log in to unmask]
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.