What is the difference between pink and brown noise?

Pink has equal energy per octave — matches human hearing best. Brown attenuates high frequencies further, giving a low rumble like distant surf.

Noise compresses efficiently so MP3 at 128 kbps is nearly identical to WAV while being 10× smaller. Easy to loop on phones.

Can MP3 loop seamlessly?

Most players insert a brief gap. For seamless loops, export WAV and use a player with gapless support, or use an app designed for sleep sounds.

Noise GeneratorLocal

Generate white, pink, or brown noise. Pick a duration and download the result as MP3 or WAV.

Duration30 s

Amplitude40%

Stereo (independent L/R channels)

Format:

Common uses

Sleep: brown or pink at a low level, looped. MP3 at 128 kbps loops cleanly on most devices.
Focus and ADHD: pink noise around 40–50% amplitude, indoors speaker.
Speaker calibration: pink noise, matched reference level on both channels.
Tinnitus masking: test each color at a low level. Different profiles help different tinnitus pitches.

How to use Noise Generator

Pick a color
White is bright, pink is balanced, brown is deep. Each serves different uses.
Set duration
Choose 5 seconds up to 5 minutes. For sleep, export the longest duration and loop in your player.
Adjust amplitude
Start at 40 percent and raise only if needed. Noise is flat and easy to over-expose.
Toggle stereo
Stereo fills headphones more fully. Mono is the cleaner choice for single-speaker playback.
Export
Download as MP3 (small, good for sleep loops) or WAV (lossless).

Frequently asked questions

What is the difference between pink and brown noise?: Pink has equal energy per octave — matches human hearing best. Brown attenuates high frequencies further, giving a low rumble like distant surf.
Why MP3 for sleep?: Noise compresses efficiently so MP3 at 128 kbps is nearly identical to WAV while being 10× smaller. Easy to loop on phones.
Can MP3 loop seamlessly?: Most players insert a brief gap. For seamless loops, export WAV and use a player with gapless support, or use an app designed for sleep sounds.