Thunderstorm Synthesis.A1 by Kyle Hughes

The genesis of this track is an attempt to synthesize and sync a realistic sounding thunderstorm to picture. This recording consists of 4 samples of rain, and another 3 samples of rain+thunder that I recorded one afternoon.

Equipment used was the inbuilt mics on a Roland R-26, and a Sennheiser ME66 into a Sound Devices 702. The clips were recorded at 96kHz/24-bit, and they were processed at 48kHz/24-bit.

For processing, I put the samples into Kyma, and crossfaded for texture.

The howling wind sound is an analog-style low pass filter's frequency, level, and resonance being controlled by a Wacom Intuos4 pen/tablet.

The rain slowly swells, which was done by changing parameters of a granular reverb.

The thunder was also controlled by the Wacom tablet, with X, Y, and Z (pressure) dimensions mapped to making the thunder swell in level, density, and texture.

This could have been output in surround, but I don't have that many monitors ;). This style of "rain-synthesis" can also go on indefinitely.