[music-dsp] Wind in Trees - how to synthesize
rwd at btconnect.com
Mon Sep 9 11:15:20 EDT 2002
It seems to me there must be a difference between "Wind across the
moors" and "wind in trees". The latter must surely have some element of
This suggests to me that granular synthesis is the technique of choice,
with a grain equating to an individual leaf- or branch-rustle (still
synthetic - a grain = filter-enveloped noise with attack/decay). Could
be combined with processed white-noise too, no doubt. Stereo granular
synthesis (where each grain has a defined position) would be the next
level of enhancement, and (if you are inside the wood) a full surround
implementation (B-Format?) would persuade the soul.
> Hello Mark,
>>For a piece I am working on I want to synthesize a
>>sound like the sound of wind in the trees - for
>>various reasons I want to synthesize this rather than
>>My guess as to an approach is to filter white noise but
>>I am not sure what the best approach is - has anyone
>>got any experience of making this kind of sound? and
>>is anyone able to give me any pointers..
> You are right. The noise is a basis. To make it sounds more windy us a LP
> filter. Add a LFO (with few seconds attack and a frequency of let say 0.1
> Hz) and make it change cutoff freq. of the filter. Then add second LFO with
> shorter attack and shorter phase that will change resonance of the filter.
> You can also make another source of wind that will have higher cutoff freq.
> than the first and quick changing resonance (ca. 1Hz). This will make your
> wind 'whistle'. Add a reverb with long decay and that should give you fine
> 'wind in the trees' sample.
> Anyone else got some suggestions? I'm also interested how to make it
> sounds better.
> Marcin Olak
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