I transfer these tapes all of the time. I transfer each side
individually and check azimuth for each side. If the tapes were recorded
at different speeds (not uncommon), I will check azimuth for the
off-speed section and record it separately. Your description of "In fact
they were recorded on all sorts of different machines" is the clue.
Aside from the fact that you may have a jumble of recordings from
different sources on one tape (also not uncommon with home recordings),
transferring the tape all at once guarantees an out-of-azimuth transfer
for the half playing backwards. Because the reverse track would not only
be off-azimuth, but because it has to be digitally manipulated, possibly
more than once (possible off-speed sections), I would think that it
would not be considered an archival quality file.
Corey Bailey Audio Engineering
On 3/9/2015 11:56 AM, Tom Diamant wrote:
> I am going to be dubbing some two track ¼ inch tapes to digital. These were
> recorded with a two track head with one mono track going in each direction.
> I was going to dub both tracks at the same time and then just flip the
> backwards track in the computer. These are not being played back on the same
> tape recorders they were recorded on. In fact they were recorded on all
> sorts of different machines. It seems simple enough, taking half the time,
> but then I thought is there some technical reason that I shouldn’t do that?
> Tom Diamant
> Arhoolie Foundation