There may not be a major problem here. What has printed through is the
audio from the next layer of tape, correct? With digital manipulation
being what it is today it should be simple enough to grab the full
volume layer of audio, attenuate it, flip the waveform and apply it
"over" the printed through signal. There will probably be artifacts but
if you fiddle with various parameters for a while, such as EQ, you will
probably be able to find an acceptable solution to your problem. I'd
apply this to softer passages and leave louder material well enough
It's worth a try.
On 10/24/2013 3:09 PM, Graham Newton wrote:
> Josh May
> June Appal Recordings
> On 10/23/2013 2:02 PM, Josh May wrote:
>> I'll get right to the crux: I'm working on a digital transfer from a 40
>> year old 1/2" master audio tape. The recording is unaccompanied singing,
>> and in the transfer I've noticed a very faint bleed-through /
>> pre-echo that
>> peaks at about -36 dB. The bleed-through is only minimally noticeable in
>> the silence before or after a very loud note, but due to the dynamic
>> of the recording, I've had trouble making a gate work and sound natural.
>> So my question is, how could I correct or minimize this problem without
>> affecting the original recording, if at all? I'm hoping there are some
>> tricks out there I'm not familiar with.
> This is a nasty problem and one for which there have been many
> attempts at answering... like Studer's "skimming" low intensity erase
> scheme, and the partial erasing device that was sold many years ago by
> a tape manufacturer, I think may have been Audio-Devices.
> Keep in mind that a dub of a printed through tape will not likely be
> of any use to test the ideas... sadly I believe it has to be the
> original for any of these ideas to work because of the dependency on
> the fragility of the
> printed-through magnetic domains.
> I recall some discussions about the problem a few years ago where it
> was offered that if the tape was played around a sharp bend
> (approaching 90 degrees) that a significant reduction in print through
> was achieved.
> CEDAR's Retouch process could remove the print sound on the tail of a
> note without damaging the room tone, however it is a manual case by
> case process and very time intensive.
> ... Graham Newton