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 triangular wave of 1 010 Hz. For more information on Morse: en.wikipedia.org/wiki/Morse_code. UCS Category: COMTelm. Duration: 00:23.
Telephone tone when the phone rings, in the UK, Ireland, New Zealand and many other countries with historical ties to the Commonwealth. These are two sound waves of frequencies 400 Hz and 450 Hz sinusoidal. This sound is easy to loop. UCS Category: COMTelph. Duration: 00:30.
VCR sound: opening of the VHS box then insertion into the VCR, playback then fast forward, then fast reverse, finally, stop, ejection of the K7 VHS and storage of it in its original box. Non stop and without trickery. UCS Category: COMAv. Duration: 03:05.
End of a 35mm film rewind: Rewind and end (Sound: Left side of the dispenser (full spool)). Can synchronize its 0076. UCS Category: COMAv. Duration: 01:03.
