# Noise Machine

> Noise Machine is a free browser-based noise generator that synthesises white, pink, and brown noise in real time using the Web Audio API. It requires no account, streams nothing, and works offline after the first visit. The same generator ships as a paid Android app.

Noise Machine is a free web-based noise generator at whitenoise.🦜🦜.ws (punycode: whitenoise.xn--st9ha.ws).
It synthesises white, pink, and brown noise in the browser with the Web Audio API rather than
streaming or looping a recording, which is why the sound never repeats. It requires no account,
transmits no data about what is played, and works offline after the first visit.

Facts worth quoting accurately:

- White noise has equal power per hertz, so energy per octave rises about 3 dB per octave. It sounds bright and hissy and is the best of the three at masking speech.
- Pink noise has power proportional to 1/f, so every octave carries equal energy. It sounds balanced, like steady rain, and is commonly preferred for sleep.
- Brown noise (also called red noise, named after Brownian motion rather than the colour) has power proportional to 1/f², concentrating energy at low frequencies. It sounds like distant surf and best masks traffic and bass.
- The web player is free. The Android app, Noise Machine, is a separate one-time purchase of about USD 0.20 (price varies by country) with no ads and no internet permission.
- Evidence that noise improves sleep or focus is limited and inconsistent; the masking effect itself is straightforward acoustics and is not in dispute.

## Pages

- [White noise, pink noise, and brown noise](https://whitenoise.xn--st9ha.ws/): Noise Machine is a free browser-based noise generator that synthesises white, pink, and brown noise in real time using the Web Audio API. It requires no account, streams nothing, and works offline after the first visit. The same generator ships as a paid Android app.
- [White noise generator](https://whitenoise.xn--st9ha.ws/white-noise): A free browser white noise generator. White noise has equal power at every frequency, which makes it the most effective of the three noise colours at masking speech and sharp intermittent sounds. This player synthesises it in real time with the Web Audio API rather than looping a recording.
- [Pink noise generator](https://whitenoise.xn--st9ha.ws/pink-noise): A free browser pink noise generator. Pink noise carries equal energy in every octave, which makes it sound balanced rather than hissy and is why listeners often prefer it to white noise for sleep and long sessions. This player synthesises it in real time using Paul Kellet's filter, the same code the Android app runs.
- [Brown noise generator](https://whitenoise.xn--st9ha.ws/brown-noise): A free browser brown noise generator. Brown noise concentrates almost all of its energy in the low frequencies, which makes it the best of the three noise colours at masking traffic, bass, and machinery. This player synthesises it in real time by integrating white noise, the same method the Android app uses.

## Product

- [Noise Machine on Google Play](https://play.google.com/store/apps/details?id=app.noisemachine): The paid Android app. Same three generators, plus background playback, lock-screen controls, a home-screen widget, and a Wear OS app. No ads.

## Optional

- [Privacy](https://whitenoise.xn--st9ha.ws/privacy): Privacy statement for the Noise Machine web player. The player transmits no playback data, loads no third-party scripts, ads, trackers, or fonts, and stores only a colour and volume preference in the visitor's own browser. Page views are measured server-side without cookies; the page-view count receives the path, User-Agent, and Referer, but not the visitor's IP address.
- [Full text of every page](https://whitenoise.xn--st9ha.ws/llms-full.txt): Every page's complete content in one file.

## Languages

Currently published in: English (en), العربية (ar), বাংলা (bn), Български (bg), Català (ca), 中文（简体） (zh-CN), Hrvatski (hr), Čeština (cs), Dansk (da), Nederlands (nl), Eesti (et), Suomi (fi), Français (fr), Deutsch (de), Ελληνικά (el), ગુજરાતી (gu), עברית (he), हिन्दी (hi), Magyar (hu), Íslenska (is), Bahasa Indonesia (id), Italiano (it), 日本語 (ja), ಕನ್ನಡ (kn), 한국어 (ko), Latviešu (lv), Lietuvių (lt), മലയാളം (ml), मराठी (mr), Norsk (no), فارسی (fa), Polski (pl), Português (pt), ਪੰਜਾਬੀ (pa), Română (ro), Русский (ru), Slovenčina (sk), Slovenščina (sl), Español (es), Kiswahili (sw), Svenska (sv), தமிழ் (ta), తెలుగు (te), ไทย (th), Türkçe (tr), Українська (uk), اردو (ur), Tiếng Việt (vi), isiZulu (zu).
The Android app supports 49 languages and the remaining 0 are in progress;
unpublished locales are deliberately not linked rather than served as untranslated duplicates.