aforest_03.wav

I generated 3 tracks.
The first is a noise brown 2 seconds, where I added the effect GVerb (first second) and the effect wahwah (second second).
The second is a sound of sinusoid D 2 seconds, where I put a nivelleur to increase sound. I generated silences to get a metronome.
For the third, I generate the same sound as the sinusoid second track, then I added the effects wahwah and nivelleur.
Finally, I do repeat all tracks and I remove any noise.