It just hearing the noise. We used the noise to take acoustic test of any speaker or amplifier.
Noise is originally white, with flat frequency spectrum. Otherwise, they called coloured noise.
Some popular coloured noise are pink, blue, red, green (jungle ambient), black, orange, and many more.
Pink noise spectrum is decreased by 3dB/Octave from 20Hz to 20KHz.
Pink is good sound, that can be modified to create rainy ambient or waterfall sound. But the waterfall need more power.
Not exactly same, but similar.
The quality is equal to your audio instrument, extremely bass.
So, the bad news is, a good sound need good instrument too. But you can try it first with headphones.
That because not all people like to hear any noises.
noise generator -> Filters -> (adittional) Effect tools (echo, gverb, etc) -> Amplifier -> Speakers.