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Ingo Benzler's Collection

Grateful Dead   02/20/1971

Capitol Theater, Port Chester, NY
Source 7" 2-track Betty Reel w/ dolby A @ 7 1/2 ips > PCM501ES @ 44.056 KHz; PCM501ES analog out > dolby A decoder > analog in Fostex D5 @ 48KHz > DATx3 > ZA2 > notch filter > CD-R
Media CDR   3 discs
Notes This is What Became Of The Bettys Source. I cleaned up the

interference
in the form of an annoying whine in the same manner as I did

other Port
Chester shows (2/18,2/21,2/23,2/24). However, I used two

different
programs to do so. For disks 1 and 2, I used Diamond Cut Audio
Restorations Tools Notch Filter, with a filter width of 0.03 to 0.04
octaves, centered on ~8000 Hz, or wherever the whine happened

to be.
I used Sound Forge Noise Reduction Plugin, centering on the

whine, for
disc 3. Why two different programs? I began work on this show

about
a month ago. I recently purchased the DCART program after

hearing it
being widely regarded as one of the best (affordable) programs

out there
for cleaning up audio. Let your ears judge which is best if you

can tell
the difference. I found the DCART notch filter to be the better tool

for
the job, while the SFNR plugin is flexible enough to be used as a

notch
filter.

I also realized long after I was into cleaning this show up that

others
have done so before me on this particular show. I'd be interested

in any
feedback as to how my show compares to other efforts! I used

the
narrowest filters I could without going bonkers. In some sections

of the
show the whine wandered quickly, forcing me to use lots of

different
filters over a small portion of the show.

Leigh Orf <orf@mailbag.com>
For furthur info on my processing & related noise issues see

http://orf.cx
Trades Allowed Yes
Owned by Ingo Benzler · Last Updated May 23, 2023