What's the Difference Between White Noise, Pink Noise, and Brown Noise?

Pink noise consists of all audible frequencies but with more energy at lower frequencies, creating a deep sound. Common examples include rustling leaves or steady rain, and listening to it may help with sleep.

White noise includes all audible frequencies. Energy is equally distributed across these frequencies, unlike the energy in pink noise.

The equal distribution creates a steady humming sound.

White noise examples include:

whirring fan
radio or television static
hissing radiator
humming air conditioner

Brown noise, also called red noise, has higher energy at lower frequencies. This makes it deeper than pink and white noise.

Examples of brown noise include:

low roaring
strong waterfalls
thunder

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