Ultrasound sounds

High-pitched ultrasonic squeaks, electronic tones and machine scans sit alongside one infrasound recording at 18 Hz. Most are clean single-layer tones that rise, search or pulse, while the button click stands out as the only true one-shot. Lengths run from a one-second click to a minute-and-a-half bed, so the files serve equally as quick stings or sustained unnerving drones.

11 sounds