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Brown Noise

What it is

Brown noise (1/f²) emphasises the lowest frequencies — the deep rumble of earth, water, and stone. It has more energy in the sub-bass than white or pink noise, and feels warmer and less harsh.

Binaural beat · 4.5 Hz theta

Two tones — 22.2 Hz in the left ear and 26.7 Hz in the right — create a 4.5 Hz difference tone in the brain. This theta frequency is associated with deep relaxation, light sleep, and creative states. Requires headphones.

Sub-bass harmonics

Six harmonic pairs between 21–36 Hz layer into the noise floor, adding subtle resonance and depth to the sound. These frequencies are felt as much as heard.

Noise texture

White Noise.

Flat spectral density — every frequency equally present. Total masking.

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Sound

Volume 70%

Sub-Bass 65%

Noise 30%

Rain 70%

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