Three sounds. 1) 2hp sh samples from 25hz bipolar lfo (doepfer a-147-2)2) 2hp sh samples from 25hz looping envelope (intellijel quadra)3) 2hp sh samples from noise generated by barton musical circuits bmc23 decaying analog noise).
Reverberation effect made by Nasca Paul with ZynAddSubFX software synthesizer. A short sample is followed by different samples with reverberation effect.