I created this polyphonic wind sound on the Roland MKS-80 using the Bitstream 3X to manually modulate the filter to give it a more natural and irregular sounding whistle. I did this rather than using the LFO because although I could adjust the rate the sweep would be automated and too regular instead of being based on human judgement. I am presenting it here in mono with no processing. If I were to use this I would process it in several ways including some volume automation, panning, equalization, probably a bit of slap back delay for stereo imaging, and a fairly short linear reverb that doesn’t sound too roomy.

Manually Modulated Polyphonic Wind