High-frequency squeak, hum: Listen & Download High-frequency squeak, hum .mp3 Error! Change your browser, please! ⇓ Download Falling, breaking wooden object ⚠ Rustling leaves, Fussing in the thicket ⚠ Sine wave (975Hz) ⚠ Bicycle rear wheel ratchet ⚠ Western, city noise, wild west ⚠ Throw nutshells on the floor ⚠ Kick on the door ⚠ Sand bag ⚠ Parachute deployment ⚠ Tile falls ⚠ Air conditioning,, The noise of the room ⚠ Lightsaber battle ⚠ ★★★★★