smoe.org mailing lists
ivan@stellysee.de
| From | "Brent Aliverti" <brent@theacf.com> |
| Subject | Re: Declicking of LP's |
| Date | Tue, 4 Mar 2003 15:52:01 -0800 |
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I second the recommendation of Sonic Foundry's Noise Reduction 2.0 for
declicking and denoising. I used it for my vinyl-sourced tracks on SOTT16.
There is a minor learning curve, so try it out on some sample audio and get
a feel for it before you do a big project. The denoising filter is great for
removing tape hiss and turntable noise/rumble. You take a sample (between
300ms to a second) of the noise where this is no signal (IE between songs),
and then it learns the difference between the signal and noise and you can
set how much noise you wish to remove.
I'm usually pretty conservative on declicking because if you're not careful,
you start to cut into percussive sounds. Definitely preview what's being
removed so you can see if there is any rhythm to it. If there is, then
you're probably pulling out some of your percussive signal as well.
Typically, I like to remove large and medium pops and clicks by hand and
ear, even though that is time consuming...at least I know I'm not affecting
the signal where I don't want to. I save automated declicking for removing
low level crackle and miscellaneous ticks.
With both filters, click the preview checkbox frequently while playing the
audio to compare the before and after signals. This makes it easy for your
ears to tell if you are removing signal along with the noise, prior to
actually filtering the entire track.
Regards,
Brent
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