You’ve lived here long enough that you don’t hear it anymore. The buses, the sirens, the pub emptying out, the bin lorry at half five. Friends visit and say they couldn’t sleep, and you feel faintly smug, because you slept fine.
Except you’re tired most days, and you can’t work out why.
Here’s the uncomfortable part: getting used to noise and sleeping through noise are not the same thing. You’ve adapted to noticing it. Your brain hasn’t stopped responding to it.
Your Hearing Doesn’t Switch Off
There’s a reason for this, and it isn’t a design fault.
Every other sense can be shut down for the night. You close your eyes. You lie still. But hearing has no lid, and across evolutionary time it was the thing that told a sleeping animal something was approaching. So it stays on watch, monitoring, all night, every night.
That monitoring isn’t passive. Sound is assessed while you sleep, and if something registers as worth attending to, your brain acts on it. Sometimes that means waking you. Very often it means something much smaller and much more insidious.
The Interruption You Never Find Out About
Sound can lift you briefly out of deeper sleep toward the surface without ever waking you.
It takes seconds. Your heart rate ticks up, your brain activity shifts toward a lighter pattern, and then it settles again. Nothing reaches your memory. In the morning you’ll say, entirely honestly, that you slept straight through.
Do that thirty or forty times a night and the total looks unchanged. Eight hours in bed, eight hours asleep. But the shape of the night is different: shallower, more interrupted, with less time in the stages that do the restorative work.
This is why the arithmetic never adds up for city sleepers. The number of hours is fine. The night underneath it has been sanded down.
What Makes City Noise Especially Bad
Not all sound is equally disruptive, and the specific character of urban noise is close to the worst case.
It’s irregular. Steady sound fades into the background quite well. Your brain stops flagging what doesn’t change. City noise doesn’t do steady: it’s a quiet stretch, then a motorbike, then quiet, then a shout. Change is what registers, and city noise is mostly change.
It’s unpredictable. You can’t anticipate the 3 a.m. siren, so there’s no adapting to it. A regular train that passes at the same time every night is considerably easier to sleep through than an occasional one.
Some of it is meaningful. Your brain treats sounds differently depending on what they might signify. A human voice, a door, an alarm, a raised tone: these get more attention than a machine hum of the same volume, because they might be about you.
It happens when you’re most vulnerable. Sleep is lighter in the second half of the night, so early-morning traffic and the bin lorry cost you more than the same noise at midnight would.
Volume matters less than you’d think. A quiet but sudden sound can pull you up where a louder steady one doesn’t. If you’ve been judging your street by how loud it is, you’ve been measuring the wrong thing.
Why “You Get Used to It” Is Half True
You genuinely do adapt, in one specific way: you stop consciously noticing. The subjective annoyance drops off. People who move to a city report being disturbed less over time, and they’re not lying.
What doesn’t fully adapt is the underlying response. The brief arousals continue after the irritation has gone.
Which is a strange and slightly unfair combination: the feedback that would tell you there’s a problem disappears, while the problem carries on. You lose the symptom and keep the cause.
What Actually Helps
Work from what you control outward.
Move the bed if you can. Away from the window-facing wall, or into the quieter room even if it’s smaller or worse in every other respect. This is free and it’s usually the single biggest change available.
Soften the room. Hard surfaces bounce sound and soft ones absorb it. A rug, curtains, a full bookshelf against the shared wall, anything textiled. It won’t stop noise entering but it reduces how much it rattles around once inside.
Seal the gaps. Sound travels through air paths, so the gap under a door or an ill-fitting window frame carries more than the wall does. Draught-proofing strips are cheap, removable, and do double duty on cold.
Give the room a floor of steady sound. This is the counterintuitive one and it’s the most effective for irregular noise. Adding a constant low-level sound, from a fan or a similar source, doesn’t cover the siren, but it reduces the contrast between silence and sudden noise. Less contrast means fewer of those brief pull-ups. You’re not trying to make the room silent, which isn’t achievable in a city anyway. You’re flattening the spikes. Which type of sound works best is worth its own read, and the short version is that it matters less than simply having one.
Earplugs, if the rest isn’t enough. Foam or wax, whichever you’ll actually keep in all night. Worth knowing that they reduce sound rather than eliminate it, so an alarm close by stays audible.
Deal with the indoor noise too. The fridge that cycles, the phone that isn’t fully silenced, the heating pipes. It’s easy to fixate on the street and ignore the sounds that are closer to your head.
When It’s Worth Asking
If you’ve genuinely quietened the room and you’re still unrefreshed, the cause may not be the street.
Worth raising with a doctor: loud habitual snoring, anyone noticing you gasping or seeming to stop breathing during sleep, waking with headaches, or daytime sleepiness that’s affecting your driving or work. Those point somewhere other than your window.
The Short Version
Getting used to city noise means you stopped noticing it, not that it stopped affecting you. The disturbance you can’t remember is the one doing the damage, and it’s the reason eight hours in a noisy flat doesn’t feel like eight hours.
Move the bed, soften the room, seal the gaps, and add a steady sound to flatten the spikes. You’re not aiming for silence. You’re aiming for a night with less change in it.
