Sleep sounds
Stream sounds for sleep
Running water sits at the exact opposite end of the library from brown noise, and understanding that one contrast tells you nearly everything about when to reach for it and when not to.
In short
A small stream is mostly mid and high frequency water noise with very little below a couple of hundred hertz, so it sounds alive and close but has almost nothing to fight a passing truck with. It suits a quiet bedroom where you want an alternative to silence, not a room you are trying to defend.
- Water beds in Tock
- 7Water beds in TockA stream is the thinnest of them. A waterfall is the heaviest.
- Bundled recordings
- 22Bundled recordingsA stream is one, recorded close, with no birds in it.
- Layers per mix
- 4Layers per mixA stream over brown noise is the standard fix for its missing bottom end.
No web preview of this one
Stream is in the app, but we have not put a clip of it on this page. The pages that do carry one are white noise, rainfall, ocean, fan, fireplace and piano.
Bright, busy, and missing its bottom octave
Water over stones makes thousands of tiny high-frequency events a second. There is essentially no low-frequency content in a small stream, because nothing big is moving. That is why it sounds close and alive, and why it is the weakest masker in the water group.
A waterfall is the same substance doing the opposite: enough mass in motion to be broadband and genuinely heavy, which is the nature pick for somebody a brook is simply too thin for.
The stream ships in Tock under Nature. There is no web preview of it on this page, so the honest description above is all you get until you open the app.
It masks upward, not downward
A stream will comfortably cover a fridge whine, a fan bearing, a high electrical hum, a tap dripping in another room. It will do nothing at all about a bus, a bass line, or somebody walking around above you.
Match the tool to the intrusion. Almost every complaint about a sleep sound not working is a spectral mismatch, and this one is the most mismatched sound in the whole library.
Close, not scenic
The recording is a brook up close, with no birdsong and nothing else layered in. That is the same rule as everywhere else: identifiable events are things you catalogue, and cataloguing is the opposite of falling asleep.
If it feels too present, the distance control does more here than on most sounds, because a stream is nearly all high frequency and distance takes the high frequencies first. Far turns a brook at your feet into a brook down the hill.
Who it suits, and who it does not
Worth trying if
- Quiet rooms, where the job is company rather than cover
- Covering thin, high intrusions like a whining appliance or a distant electrical hum
- People who find low beds oppressive and want something light in the room
- Daytime rest, where you are not asking it to hold up for eight hours
Probably skip it if
- Traffic, machinery or anything with weight to it, which walks straight underneath a brook
- Anyone who wakes needing the bathroom on water sounds, which is the single most common reason people drop this one
How it behaves once it is running
- It is one of the 22 bundled recordings, so it plays from the app with nothing to fetch.
- You can layer up to four sounds at once and save the result as a mix, so a bed you like is one tap the next night.
- A distance control puts it Far, Near or Close, which changes how present it feels rather than just how loud it is. 42 of the 63 sounds carry it.
- It fades with the sleep timer, and the good-night screen dims itself to near black after twenty seconds so the phone stops being a light source.
What to put underneath it
Four sounds at a time is the limit, and three is usually the sweet spot. These are the pairings that hold up.
- Brown noiseThe obvious repair. Brown covers everything a stream has nothing in, so the pair spans the full range at a lower total volume than either alone.
- Night forestWater in trees is a real place rather than two sounds. The forest supplies mid-range texture and the stream supplies something continuous under it.
- CricketsBoth sit high, so this is a summer night rather than a masking mix. Use it in a quiet room where the point is atmosphere.
Questions people ask
Why does the stream not block my neighbours?
Because almost nothing that gets through a wall is in the range a stream occupies. Walls absorb high frequencies well and low ones poorly, so what reaches you is bass and rhythm, and a brook has neither. Brown noise is the sound for that job.
Stream or rain?
Rain covers a much broader range and masks properly. A stream is brighter, busier and more present, and works best when you are not asking it to do any real covering. If you are unsure, rain is the safer pick and the stream is the more interesting one.
Does water make people wake up needing the bathroom?
Plenty of people report it and plenty do not, and there is no good evidence either way. It is worth two nights of your own testing rather than an argument. If it happens to you, rain and brown noise cover the same ground without the association.
Related sounds
Nearby textures worth trying on a night this one does not land.
- RainfallSteady rainfall spreads its energy fairly evenly across the audible range, close enough to pink noise that it masks about as well while sounding a great deal less like a machine. The bigger variable is the surface: rain on canvas, on glass and on a car roof are three genuinely different sounds, and only one of them will suit your room.
- OceanRolling surf is broadband like rain, but it breathes, cresting and receding on a cycle of about ten seconds, and a lot of people find that slow rise easier to let go of than a flat hush. The cost is that the level moves, so it masks less reliably at the quiet end of every cycle than steady noise does.
- Night forestA night forest bed is a soft, broad rustle of leaves with occasional distant events layered into it, and the design rule that makes it work is that none of those events should ever be identifiable. A sound you can name is a sound you then lie there waiting to hear again, which is the exact opposite of falling asleep.
- Brown noiseBrown noise puts almost all of its energy in the low end, dropping roughly 6 dB with every octave you climb, so it reads as a rumble or distant surf rather than a hiss. That low weight is exactly why it covers traffic, footsteps and a neighbour's bass better than white noise does, and also why it can feel like pressure if your room is already quiet.
Elsewhere on the site
A different corner of the same problem.
- RoundupsThe best free alarm apps for iPhoneThe best free alarm app for iPhone is the Clock app that came with it. It is free forever, it rings through silent mode and a Focus, and it has never failed. Alarmy is the best free option if you need an alarm that is hard to turn off. Tock is not free and is listed last for that reason.
- Wake timesWaking up at 8:00amBedtimes by sleep cycle for a 8:00am alarm.
- BedtimesGoing to bed at 11:00pmWhere to put the alarm after a 11:00pm lights-out.
- Sleep by ageHow much sleep preschoolers needThe American Academy of Sleep Medicine recommends that children aged 3 to 5 years sleep 10 to 13 hours per 24 hours, including naps, on a regular basis. This is the final band where daytime sleep counts toward the total; from age 6 the figures are given per night.
- NapsThe 60 minute napA 60 minute nap includes a substantial amount of slow wave sleep, which is useful for recovery and for some kinds of memory, and it usually ends before the cycle completes. That means the benefit is real and the wake-up is often groggy, so it suits situations where the hour afterwards is flexible.
- Wake tonesMusic boxMusic box is Tock's slowest and most nostalgic wake tone, a thin bell-like melody that unwinds instead of alerting. It rings reliably through silent mode because Tock's alarms run on Apple's AlarmKit, but as a tone it is the weakest choice in the set for anyone who genuinely sleeps hard.
You cannot just decide to fall asleep
Stream is one of 63 sounds in Tock. Layer four at a time, save the mix, and let the alarm wake you at a lighter moment in the morning.