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.
Beep of a truck goes back. This sound was made on computer. It is a sinusoidal wave of frequency 1220 Hz. Easy to loop. UCS Category: BEEPVeh. Duration: 00:19.
Beep of a truck goes back. This sound was made on computer. It is a sinusoidal wave of frequency 1255 Hz. Easy to loop. UCS Category: BEEPVeh. Duration: 00:19.
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: 00:12.
Cartoon footsteps, or fear. Sound of a wooden Agogô being struck. Percussion instrument of African origin from the idiophone family. UCS Category: MUSCPerc. Duration: 00:01.
Sound of a 40cm (16") cymbal, struck with a wooden drumstick. This is a Medium Thin Crash cymbal by Avedis Zildjian. UCS Category: MUSCPerc. Duration: 00:08.
A small audience applauds after a piece played by a small band in a bar. Thanks to the music group "Les Accroch'Coeur": LesAccrochCoeur.com. UCS Category: CRWDCheer. Duration: 00:07.
Two helicopters landing and taking off one after the other. Sound recording during the open day of the UIISCI in Nogent-le-Rotrou in France. UCS Category: AEROHeli. Duration: 02:52.
Recording of the passage of a truck, with the Lom brand "Geofón" contact microphone. The microphone is on a lamppost. UCS Category: AMBTraf, SCIMisc. Duration: 00:25.