On 12/21/2020 12:00 AM, Tim Gillett <[log in to unmask]> wrote:
> I believe that compared to vinyl, shellac was a relatively noise
> medium so it occured to me that assuming the stamper had less noise
> than the shellac copies, it should be possible to time align the audio
> from the two discs, sum to mono and yield a potential background
> noise reduction of 3db. Not huge but with an already noisy recording,
> not to be sneezed at!
As one can see from the responses so far, there is some merit to your
idea, though it would be difficult to execute. Here's another thought.
Capture the 78 using a stereo cartridge (though not a microgroove
stylus) and use the Center Channel Extractor effect in Adobe Audition to
isolate the music. I've had some success using this technique with mono
albums, though it does dull the sound of the music somewhat.
J. D. Mack
Stage 2 A/V Productions