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.
Alarme d'incendie que l'on retrouve généralement dans les collectivités (Lycées, collèges, centres, etc.). Same sound as #0268 and #2250, but longer. Difficult to loop. UCS Category: ALRMElec. Duration: 00:39.
Noise of a car driving on an asphalt road. It starts, accelerates, rolls, brakes and turns off the engine. Sound taken from the car. This is a Peugeot 107 petrol. UCS Category: VEHCar. Duration: 01:10.