[PD] analysis before synthesis: How?

William Brent william.brent at gmail.com
Sun Mar 7 16:04:33 CET 2010

If the scifi-sound is a theremin, there's a good chance that you could
have decent success using sigmund~ to follow spectral peaks over a
certain volume, and resynthesize by sending the frequency/amplitude
information to a bank of oscillators.  It'll help to know something
about how spectral analysis works to find the best values for window
size and hop, but sigmund~ makes things as easy as possible.

The other option that might be worth a shot is Audacity's "Noise
Removal" effect.  You select a region of the file that is just noise
to train it, then process the noise removal.  From the few times I've
used it, I've gotten results ranging from laughable to passable.  It
completely depends on the nature of the signal and noise components
you're dealing with.

Good luck,

On Sun, Mar 7, 2010 at 5:50 AM,  <meino.cramer at gmx.de> wrote:
> Hi,
> this is more a general question:
> I have a "piece of sound" (sorry, English is not my mothers tonque...)
> which conatins beside background noise a scifi-sound, which I want to
> synthezise ("synthesise"?) with puredata as close to the original as
> possible -- without the background.
> Now I am looking for recipe to do such a thing -- without the need of
> a supercomputer and without the deep deep knowledge of really deep
> math.
> Is there a way to supress the backgroudn as much as possible?
> Would it be make sense to make a fourier analysis with a tool (what
> tool -- I am using puredata on Gentoo-Linux)? Are there others
> tool, which would help me to solve this task?
> Any idea and help are very appreciated -- thanks a lot in advance!
> best regards and have a nice sunday!
> mcc
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William Brent

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