In general, that is good advice, but there are times when it makes sense
and now with digital channel timing post processing available (iZotope
has it at a more reasonable price than Cedar, as well as possibly a few
other items) it makes more sense more often to obtain a 3 dB improvement
in S/N ratio from a noisy tape, especially cassettes. This 3 dB is
almost "free" of major artifacts as compared to single-ended noise
reduction. Using both together can do some good work.
So, while I agree, especially if you don't have the inter-channel delay
post processing, I think there are times when summing is indicated,
especially for content with limited high-end information, like oral
On 2013-02-06 3:58 PM, Michael Biel wrote:
> If you are sure that
> the recording really is mono, only ONE of these two tracks should be
> copied. NEVER SUM TWO MONO TRACKS TOGETHER EVEN IF IN PHASE AND IN
> ALIGNMENT. NEVER. ALWAYS KEEP THEM SEPARATE -- AND IT IS BETTER TO
> ONLY COPY ONE OF THEM IN THE FIRST PLACE.
Richard L. Hess email: [log in to unmask]
Aurora, Ontario, Canada 647 479 2800
Quality tape transfers -- even from hard-to-play tapes.