Freesound Forums
removing or reducing certain sounds from samples
Started September 7th, 2005 · 6 replies · Latest reply by Bram 18 years, 8 months ago
Is there any way of removing or reducing certain sounds from samples. For eg.
Removing the drum in this sample: ( I like the slogan the guy's shouting)
http://freesound.iua.upf.edu/samplesViewSingle.php?id=7390
or reducing the chirping of the birds in
http://freesound.iua.upf.edu/samplesViewSingle.php?id=7059
( The sound is too sharp)
I've tried messing aroiund with the EQ on Cubase but can't seem to be getting any results
My outdated version of Cooledit 96 allows you to select the sound you want to use as the "noise" in it's noise reduction function and can be used for interesting effects aside from removing hiss and noise. It has a lot of controls. You can google and find the shareware program out there still, Adobe ownsSyntrillium now but you can find the keys to unlock the old software online too. If not, it still works in a limited fashion.
Recycle 2.1 is the absolute best program for doing this...it isolates every sound in the recording(this is easy if it is a clear recording) and turns them into slices that can be individually muted and pitch bent, or rearranged.
The only real problem with this is that it seems to not open anything over a certain length(between 4 and 5 minutes).
A Fast and dirty way to get rid of vocals is through good old phase cancellation. The idea is that orthogonal frequencies multiply to zero -- so how can you apply this to an audio file?
Well the usual convenience is that vocals tend to be panned closer to dead center, and the other instruments tend to be panned in various degrees away from center. So if you invert the phase and multiply the inverted signal with the original (can be done in most audio editors), you'll do a good job at supressing the vocals...not perfectly usually, but more can be done though...
I'm guessing the article on VT is pretty much a heavier more in-depth version of this process.
