Pink Noise Generator Online — Free Browser-Based Pink Noise
Stream pink noise online — the warmer, more natural cousin of white noise (1/f spectrum). Perfect for sleep, focus, speaker calibration, and acoustic room tuning. Free, in your browser.
Noise will play continuously until you press Stop.
What is Pink Noise?
Pink noise is a random signal whose power spectral density falls off at 3 dB per octave — meaning lower frequencies carry more energy than higher ones. The result sounds like steady rainfall, waterfall, or wind through trees: warmer and more natural than white noise, but still with a full audible-range "shhh" quality.
Pink noise is the reference of choice for audio room calibration because human hearing is logarithmic and pink noise distributes energy evenly across logarithmic frequency bands. It is also widely used in studies of sleep, focus, and memory consolidation.
Features
True 1/f Pink Noise
Generated live using the Paul Kellet filter — accurate, smooth, gap-free pink noise.
Sleep Timer Built-In
5, 15, 30, 60, or 120-minute auto-stop so playback ends after you drift off.
Pink, White & Brown
Switch instantly between noise colours to find the texture that works for you.
Room Tuning Ready
Pink noise is the standard reference for measuring speakers and acoustic rooms.
Mobile First
Use on iPhone, Android, tablet — anywhere you need calm background noise.
Smooth Fade In/Out
Soft volume ramps protect against startling on-off transitions.
Common Uses
Pink noise is widely considered the most natural-feeling noise colour for overnight masking.
Studies suggest pink noise played during sleep may improve memory consolidation.
Reference SPL meter against pink noise to set channel levels and check room response.
Use pink noise with an RTA to identify room modes and EQ corrections.
How to Use
1. Choose Waveform
Pick sine, square, sawtooth, or triangle depending on the tone character you need.
2. Set Frequency
Use the slider or tap a preset to dial the exact frequency you need.
3. Adjust Volume
Start at low volume — pure tones can be louder than they feel.
4. Press Play
Hit Play and the tone keeps playing continuously until stopped.
Frequently Asked Questions
White noise has equal energy at every frequency (sounds bright and hissy). Pink noise has more energy at low frequencies (3 dB/octave roll-off), making it sound warmer and more like rainfall.
Most people find pink noise more natural and less fatiguing for overnight use. Try both and see which sends you to sleep faster.
Because human hearing perceives frequencies logarithmically, pink noise distributes equal energy per octave — making it the most "even" reference for calibration and room tuning.
Yes, at moderate volume below 50 dB. Use the built-in sleep timer if you prefer the noise to stop once you are asleep.
Many people find it does — pink noise masks intermittent distractions without being interesting enough to itself become distracting.
Listening Safety
Keep overnight volume below 50 dB. For babies, place the device at least 7 feet away and use a low volume.