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| From | Chuck Warner <chuck@hyped2death.com> |
| Subject | Re: Declicking of LP's |
| Date | Wed, 5 Mar 2003 09:29:15 -0500 |
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Another thought about de-clicking --and why Mike Wiz' software idea
would be such a good idea.
At this point, I'm doing almost all of my de-scratching "by hand,"
although for PC owners, Sound Laundry from Algorithmix is hard to
beat.
If you think about it, clicks and pops happen in three different
ways, where the needle is pushed right, left, or up in the groove by
whatever damage or crud gets in its way. Plus there's mis-tracking.
And each of these bits of noise --although they sound much the same
to the human ear-- produces a distinctly different wave-form
distortion, which is why existing noise-removal programs tend to
over- or under-clean. Perversely, the straight up-and-down
distortions are probably the hardest to zap with an algorithm (which
"wants" to see the difference as legitimate stereo content), but
they're the easiest to get rid of by the old deejay's trick of simply
mixing it into mono.
The feature I would like to see in this amazing new software (Wizware
Compare 1.0?) would be the ability to scan for comparative
distortions, so that the program would follow the two sound-files and
stop every time there was a questionable wave-form comparison (you
could set the threshold) and allow the user to choose one of these
options:
1-select version 1 waveform
2-select version 2 waveform
3-redraw waveform [1 or 2] [as in ProTools]
4-nudge waveform forward [1 or 2] [to realign the two samples.
whenever they get significantly out of phase with each other.
And the "save" command would incrementally dump the mix to a
beautifully clean third .wav file.
This'd work best, of course, with recordings made on the same
equipment one right after the other, but the nudge/realign feature
would also permit, say a cassette-recording to be used to supplement
the vinyl sound.
And just in terms of improving what's already out there, (it may be
there already), a "metronome" tool would be nice --something that
could be set to recognize (and leave alone) the attack on drums and
cymbals and allow the de-clicking to focus on the noise in between
beats. Anyone who's tried to clean an intro with just drums --or
worse, drums-and-bass or drums-and-synth-- will recognize the problem.
If anyone out there might like to get to work on this, I'm ready to beta-test!
Chuck Warner
http://hyped2death.com
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