Dark noise for the nights you overthink.

Why it works

Dark noise is another informal name, used for noise with nearly all of its brightness removed. This one is pink noise closed down at 320 Hz, with its level drifting very slowly on two cycles that never line up. It sounds like night air: present, soft, and slightly different each time you notice it.

Overthinking is a mind doing its job with nothing to do it on. Sound alone does not change that; it only makes the room quieter while it happens. The story layer is the other half. It gives the thinking a subject that cannot go wrong, because it already ended centuries ago.

What you are hearing

• Dark noise. Pink noise low-passed at 320 Hz, with a very slow rise and fall in level that never repeats. Soft, close and a little uneven, like air moving at night.
• The voice. The first four minutes of Aristotle, the Greatest Philosopher, a Lullable story, in a synthesised voice. It only plays if you bring it in.
• The ending. The preview lasts four minutes. Its last ten seconds are a straight fade to silence, so it never stops abruptly.

For a real recording that runs forty minutes, the Lullable iPhone app has rain, waves, a campfire and plain noise, with no voice and no music.