Two Tawny Owls or Brown Owls (Strix aluco) that answer each other. A male who hoots and a female who screams. To learn more, go to Wiki: en.wikipedia.org/wiki/Tawny_owl. UCS Category: BIRDPrey. Duration: 00:28.
Two-tone siren. Doppler-Fizeau effect of a passage from left to right, made by computer. No engine noise, it's up to you to choose the noise of your vehicle according to your project. UCS Category: VEHSirn. Duration: 00:20.
Beep used to censor. This sound was made on a computer. It is a half-second sine wave with a frequency of 1000 Hz. UCS Category: BEEP. Duration: 00:01.