Whoosh by, return with a shiver or pulse.
Pulsing and melodic drone
alien grunt, vocal, swallowing,quick granular tone pulse x2
Granular creature, Low pulse followed by a high pulse
Sound design: pulsing and swirling synthesized atmosphere with feedback delay and modulation
Harsh pulses, descending and reducing in bit rate. Lots of ring mod and phase buggery.
Deep musical electronic and pulsing drone
Distorted, fast, noise pulses