Noise colours and sound layers
Turn the dial for a colour, from violet to deep brown. Then lay rain, surf or a fan on top and set each level on its own. Every sound is made live on your iPhone, so nothing loops.
Noise colours
Violet noise
+6 dB per octaveThe brightest colour, mostly high hiss.
FreeBlue noise
+3 dB per octaveBrighter than white, for people who like hiss.
FreeWhite noise
flat: equal power at every frequencyA bright, even hiss, like a detuned radio.
FreeGrey noise
shaped to an equal-loudness curveTuned to sound equally loud at every pitch to the human ear.
FreePink noise
−3 dB per octaveSofter than white, like steady rain.
FreeBrown noise
−6 dB per octaveDeep and low, like a waterfall or a strong wind. Also called red noise.
FreeDeep brown noise
brown with a low shelfBrown noise with more rumble at the bottom.
Free
Layers
Rain
PlusLight, steady, on a roof or on a tent.
Ocean surf
PlusWaves that swell and fall at random lengths.
Wind
PlusMoving air, rising and falling.
Fans and air conditioner
PlusBox fan, ceiling fan, air conditioner.
Stream
PlusWater over stones, with bubbling.
Train and plane cabin
PlusLow rumble with the rhythm of the track.
Heartbeat
PlusA soft pulse under low noise.
Fire
PlusA fireplace crackling.
Shushing
PlusA soft “shh” with a breath rhythm.
Save the mix you fall asleep to.
Pick a colour, add layers, set the sleep timer. Hush Machine keeps it as a mix, one tap away tonight.
Coming soon to iPhone