Free Pink Noise Generator for Baby

White noise has equal energy per frequency and usually sounds brighter or hissier. Pink noise has equal energy per octave, which gives lower frequencies more prominence to the ear. Neither colour is automatically better for a baby. The recording, speaker, volume, distance, and duration matter more for safety than the label on the sound.

Choose based on the sound you can keep quiet and unobtrusive. If a track contains obvious waves, birds, voices, sudden loops, or bass pulses, it may be less consistent than its title suggests. Listen through the actual device before using it near a sleep space, because a small phone speaker can change the balance significantly.

A 2014 study in Pediatrics tested 14 infant sleep machines at full volume. Measured 30 cm away, every one was louder than 50 dB, the limit recommended for babies in hospital nurseries, and three were louder than 85 dB. The authors advise placing a sound machine as far from the baby as possible, never in the cot or on the rail, keeping the volume low, and playing it for a short time. The American Academy of Pediatrics also advises placing sleep machines as far away as possible, setting the volume as low as possible, and limiting how long they play. The advice applies to any sound, not only white noise.

A volume slider is not a sound-level guarantee. Output changes between devices and rooms, and sound becomes quieter with distance. Check from your baby's sleeping position rather than beside the speaker. NIDCD describes the basic rule as avoiding noise that is too loud, too close, or lasts too long. If the track dominates the room or adults must raise their voices, turn it down or stop it.

• Test the full loop for jumps, adverts, voices, or abrupt changes.
• Keep the volume below about 50 dB where your baby sleeps.
• Put the device at least 2 metres (about 7 feet) from the cot.
• Never put a phone, speaker, cable or sound machine in the cot or on the cot rail.
• Turn the sound off, or let a timer stop it, once your baby is asleep.

Short, quiet use during the wind-down is a cautious place to begin. Turn it off once your baby is asleep, and do not leave it playing all night, even if traffic or household noise carries on. The study authors advise short use.

This player and the Wake Wise app loop the sound and have no timer of their own. On iPhone, open the Clock app, tap Timers, choose a length, tap When Timer Ends and pick Stop Playing. The sound stops when the timer runs out.

Do not use sound to cover persistent crying, breathing changes, alarms, or other cues that need attention. Background audio is not a substitute for feeding, comfort, a safe sleep surface, or professional advice when a baby seems unwell.

Pink noise can be reduced at any age when it no longer solves a real problem. Lower the volume gradually, shorten the timer, or reserve it for unusually noisy naps. You can also alternate quiet nights with noise nights to see whether it changes settling at all.

Keep the rest of the routine stable while you test. A predictable sequence such as feed, change, dim lights, short cuddle, and cot is more portable than any audio file. If sleep is unchanged without the track, you have a clear reason to stop. If a child is distressed by sound or appears sensitive to it, stop and discuss the concern with a qualified professional.

You can also compare the white-noise tool, read our wake-window guide, or review general baby sleep tips. These resources are general information, not medical advice.