Sine wave (975Hz): Listen & Download Sine wave (975Hz) .mp3 Error! Change your browser, please! ⇓ Download Corridor noise, metal shaking ⚠ Ice crack ⚠ Battery Hits ⚠ Closing doors,, opening, Freight elevator ⚠ Throw a match and a glass container ⚠ Sand bag ⚠ The noise of the elevator, knocking ⚠ Energy distortion, explosion ⚠ Beep time ⚠ Hum, High-frequency squeak ⚠ Pull telescopic antenna ⚠ Harvesting machine ⚠ ★★★★★
