Rain, Generated

There is a particular kind of silence that only exists at three in the morning. It isn’t peaceful. It’s the silence of a building where everyone else has somewhere to be in the morning, and the fridge hum is the loudest thing in the world, and every thought you have lands with a little echo.

Rain fixes that silence. Not completely — but it gives the dark a texture. It fills the room the way a lamp fills a room, without asking anything of you.

Why rain, specifically

I think there are three reasons rain helps on a low night, and only one of them is about sound.

It’s a steady signal with no story in it. Music asks you to feel something. Podcasts ask you to follow along. Rain asks nothing. It’s dense enough to cover the small noises your brain would otherwise grab onto, and random enough that there’s no melody to get stuck in.

It slows the whole world down, not just you. On a rainy night, nobody is going anywhere. The street is empty for a reason. For once, staying inside isn’t a symptom — it’s simply what everyone is doing.

It is permission. Rain is the weather equivalent of someone saying you don’t have to do anything right now. Plans get cancelled. Windows stay shut. The sky has taken the decision away from you, and on a low night that’s a kindness.

A rain you can turn on

So here is one. It isn’t a recording — every drop is invented in your browser as you listen, so it will never repeat exactly. Turn the amount up for a downpour, or down for the soft kind that barely reaches the window. Move it closer and it’s as if you’ve opened the door and sat down on the step.

Start the rain Amount Distance · Behind glass Drips from the gutter

Sound only starts when you press the button. Headphones and a low volume work best.

How it’s made

It is surprisingly little:

• The body of the rain is noise — random numbers, shaped so that the low frequencies are a bit stronger than the high ones (this is called pink noise, and it sounds softer than pure static). A low-pass filter then cuts the highs; moving the distance slider moves that filter, which is why “behind glass” sounds muffled.
• Individual drops are tiny bursts of the same noise, a few hundredths of a second long, each passed through a narrow filter at a random pitch. Dozens of them per second add up to the patter.
• The gutter drip is a sine tone that falls slightly in pitch as it fades — which is roughly what a single drop hitting a puddle sounds like.

That’s it. Noise, filters, and randomness, layered until your ear stops hearing the parts and starts hearing weather.

Turn it off whenever you like. Real rain does that too, eventually.