Sine wave (975Hz): Listen & Download Sine wave (975Hz) .mp3 Error! Change your browser, please! ⇓ Download Ax blows on the subject ⚠ Sand bag ⚠ Rope fall ⚠ Trash falling, rack destruction ⚠ Breaking a wood-glass product ⚠ Organ plays, Church, small crowd ⚠ Balloon bursts ⚠ Noise inside the spaceport ⚠ Air conditioning,, The noise of the room ⚠ Noise ⚠ Spray Shaving Foam ⚠ Escalator ⚠ ★★★★★