🌊 Pink Noise Generator

Generate noise with equal energy per octave for listening comparisons and speaker checks. No signup.

Volume50%

What is Pink Noise?

Pink noise has equal energy per octave (−3 dB/octave). Sounds like steady rain or rustling leaves — more natural and less harsh than white noise.

The Science of Pink Noise

Pink noise is white noise with the high frequencies progressively reduced. Its power drops by 3 dB for every octave you go up, which matches how the human ear perceives loudness. The result is a sound we hear as “balanced” — like steady rain, ocean surf, or rustling leaves.

Because human hearing is naturally more sensitive to high frequencies, pink noise sounds less harsh than white noise while still covering the full spectrum. This equal-energy-per-octave property is also why pink noise is the standard reference signal for calibrating studio speakers and room acoustics.

Common Uses

•Background sound
•Compare noise spectra
•Compare speaker balance
•Studio monitor testing
•Room acoustic analysis

Compare Noise Types

White = all frequencies equal | Pink = balanced, natural | Brown = deep, low-heavy

White Noise Generator Pink Noise Generator Brown Noise Generator

Use pink noise for broad tonal comparisons

The generator filters random samples to approximate pink noise, with roughly equal power per octave. It plays a two-second looping buffer, not a microphone-derived room correction signal.

A repeatable check

Start at low page and system volume, then listen briefly from your usual position.
For a placement comparison, stop before moving the speaker and keep output settings the same when you restart.
If a narrow buzz stands out, use the bass test or tone generator to locate it more precisely.

What the result suggests

The sound becomes bass-heavy near a corner: Compare with a less enclosed placement at the same output level. Room boundaries can alter the balance without a change in the generated noise.
A graph from another app does not look flat: Check whether it shows equal-width frequency bins or octave bands. Pink noise is not expected to be flat in every plotting convention, and the microphone response also matters.

What this cannot establish

Listening alone cannot produce a calibrated room-response curve. This generator is a signal source, not an automatic EQ, speaker calibration system, or proof of a sleep benefit.

Testing methods and limitations

Enable JavaScript to play sounds and use the microphone. You can still read this page’s instructions, result explanations, and frequently asked questions.

Frequently Asked Questions

How is pink noise different from white noise?

Pink noise has approximately equal power in each octave band, with less high-frequency energy per hertz than white noise. This generator applies an approximate filter to a random buffer and loops it.

Can I calibrate speakers just by listening?

You can compare left and right speakers at a fixed position and volume. Listening alone does not establish a flat response; calibration requires a microphone, measurement software, and a known target.

Does pink noise guarantee better sleep?

No. This tool generates sound and does not assess or treat sleep problems. Preference varies. Begin quietly and limit duration; reduced treble does not establish a safe listening level.