Green Noise: Free Online Player and Download
Green noise for sleep, with a timer and a free file, played in this browser with no app
- Free, no sign-up
- Peaks around 500 Hz
- No app to install
How it works
- 1
Press Play. The soft mid-range hum begins in your browser.
- 2
Tap Brown or Pink to add depth, and set a timer for the night.
- 3
Download 10 minutes to 10 hours as MP3, M4A, FLAC, or WAV, at no cost.
Green and the other noise colors
Green noise has no standard definition, so here is how ours compares with the four colors that have one
| Color | Where the energy is |
|---|---|
| Green | A peak around 500 Hz. This is the middle frequency band, where much of a speaking voice sits too. |
| White | Flat: every frequency gets the same energy, so it is a bright hiss. |
| Pink | Falls 3 dB per octave, so it is softer than white, like steady rain. |
| Brown | Falls 6 dB per octave, so it is a deep, low roar. |
| Blue | Rises 3 dB per octave, so it is a thin, sharp hiss. |
| Green vs brown vs pink | Brown and pink are strongest in the low notes. Green cuts both the lowest and the highest notes, so it sounds rounder and less deep. |
Use green noise at bedtime
Level and timer
Long, loud listening can damage hearing, Cleveland Clinic says. Start with the slider low and choose 30, 60, or 120 minutes, so the sound fades out and stops.
An app or your browser
A free green noise app still needs an install, and often an account. Green noise in your browser needs neither. It plays on a phone, a tablet, or a computer, and you get a file to keep.
Green noise vs brown noise
Play Green alone, then Brown alone. Brown has more deep rumble. Green sits in the middle and has less of it.
Dark screen
Tap Dark screen at bedtime. The screen goes black, and one tap shows the player again.
Questions
- What is green noise?
- A name for noise with most of its energy in the middle of the range. No standards body defines it, so each app makes it in its own way. Ours peaks around 500 Hz.
- Is it a real color of noise?
- Not in the way white, pink, and brown are. Those have exact math definitions. Green is a popular name for mid-range noise, and its shape changes from app to app.
- What does it sound like?
- A soft, round hum, like wind in trees heard from indoors. This green noise sound has less hiss than white noise and less rumble than brown.
- What frequency is it?
- There is no one answer. Ours peaks around 500 Hz. The best green noise frequency for sleep is the one you find calm, and we know of no study that names one.
- Is green noise good for sleep?
- It may help you, as steady noise helps some people. The Sleep Foundation says some studies found people fell asleep faster with white noise, and reviews call the evidence mixed and of low quality. We know of no study of green noise sleep effects in particular.
- Is it safe to listen to?
- Volume is the main risk with any steady sound. Keep it low, use the timer, and take breaks when you wear headphones. If you hear ringing in your ears, see a doctor or an audiologist. These sounds are not a medical device or medical advice.
- How is this green noise made?
- We make it from exact math, with the energy at its peak around 500 Hz. Your browser plays it as a seamless loop of about 3 minutes, in 48 kHz stereo. The table above compares it with the other colors.
- Can I play green noise without an app?
- Yes. In any current browser, press Play. There is nothing to install, and every control works without an account.
Privacy
Your browser plays the sound, and nothing is uploaded. No account is needed.
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