This audio is not a sound effect itself, however it can be used with an impulse response plugin to recreate the acoustics of a particular environment. This particular file is designed to replicate the acoustics of distant muffled club or rave. This was done using the "profiler stereo lsp plugin" and placing the microphones on the opposite corner of the speaker in a highly reverberous house forcing the audio to reverberate around a corner. After this, a low frequency boost was applied in post along with other general cleanup of the audio.
Classic rave noise as made famous in human resource's track "dominator" - commonly referred to as "hoover noises". Sampled directly from a roland juno2.
A darkpsy riff @ 155 bpm. Done in caustic on the subsynth. Used the fm function obviously. Put a flange & phaser & distortion, 2 delays & a reverb. ۋاقىت ساياھىتى.
Field recording made with zoom h2 mic with reverse 2 stereo microphones. Recording from the beginning of the march, rain, crowds building till first sound-system passes.