Beep sound of a radar or assistance to reverse. The beeps become louder when the car is approaching an obstacle. This is a 1900 Hz sinusoidal beep. UCS Category: VEHCar. Duration: 00:06.
The message "This is an important message" in international Morse (sound) alphabet. the Morse is formed of "dit" and "dah" (of points and features). 1 "dah" equals 3 "dit". The spaces between the letters are equivalent to 1 "dah". Ends with a space between the words equivalent to 7 "dit". Realized on a computer with a sine wave of 615 Hz. For more information on Morse: en.wikipedia.org/wiki/Morse_code. UCS Category: COMTelm. Duration: 00:23.
The passage of a spaceship. In reality, sound needs air to move: In the absence of air in space, no sound. Except at the cinema.. UCS Category: SCIShip. Duration: 00:10.