Pink noise or 1/ƒ noise (sometimes also called flicker noise) is a signal or process with a frequency spectrum such that the power spectral density (energy or power per Hz) is inversely proportional to the frequency: en.wikipedia.org/wiki/Pink_noise. UCS Category: TEST. Duration: 00:19.
Paris apartment. First floor. Closed window (some glass vibrations at low frequencies), before crossing a boulevard (acceleration and braking of vehicles). UCS Category: AMBRoom. Duration: 04:02.
Singing a field cricket. Present in France, the field cricket digs a hole in the sunny plains and sings to seduce the female. UCS Category: ANMLInsc. Duration: 00:36.
Sound of a very large industrial switch. Like that of a shed or a very large room. Like you hear in the movies. This sound was created on a computer, with a switch noise, iron bar and reverb. UCS Category: MECHClik. Duration: 00:03.
Two-tone siren of the French Gendarmerie. 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.