Distress signal "SOS" 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", except for the SOS, which must be sent as if it were a single letter, that is to say not using an inter-letter interval. Ends with a space between the words equivalent to 7 "dit". Realized on a computer with a sine wave of 440 Hz. For more information on Morse: en.wikipedia.org/wiki/Morse_code. UCS Category: COMTelm. Duration: 00:03.
Playground of a kindergarten. Sound recorded following an introduction to Sound Effects. The children speak in French. UCS Category: CRWDChld, AMBSchl. Duration: 04:29.
Passage of a steam locomotive in a small tunnel. Buzzer at entry and exit. Check-in from the first car. Recording in the town of Martel, France. UCS Category: TRNSteam. Duration: 01:13.
I sing in overtone. Overtone singing is a vocal technique for producing a vocal timbre characterized by two notes of different frequencies. My first voice is a root C, my second is a whistle. more information on this song: en.wikipedia.org/wiki/Overtone_singing. UCS Category: VOXSing. Duration: 00:17.