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Red noise, also known as Brownian noise, emphasizes lower frequencies. It has a deep, rumbling tone often associated with ocean waves or distant thunder, ideal for deep relaxation or sleep.

Orange noise is a less commonly used noise profile, typically emphasizing mid-low frequencies. It offers a warm and balanced hum, suitable for masking environmental sounds while maintaining comfort.

Yellow noise boosts midrange frequencies, creating a sharper, more energetic sound. It can resemble wind or rushing water and is often used for focus and creative stimulation.

Green noise represents a natural balance of frequencies, often resembling nature itself — like rustling leaves or forest ambience. It's excellent for meditation and background calm.

Blue noise increases in intensity with frequency, giving it a hiss-like quality. It’s often used in audio testing and can subtly enhance alertness or mental sharpness.

Violet noise emphasizes very high frequencies. It’s used to mask tinnitus and helps increase clarity in speech or reduce ringing sensations in clinical settings.

Pink noise distributes energy evenly across octaves, creating a balanced, soft roar. It’s one of the most commonly used types of noise for sleep, focus, and relaxation.

Brown noise is similar to red noise but with even more emphasis on low frequencies. It feels dense and immersive — like a low-pitched thunderstorm — and helps mask intrusive sounds.

Grey noise is adjusted to sound equally loud across all frequencies to the human ear. It’s psychoacoustically balanced and often used in clinical sound studies or hearing tests.

White noise contains equal intensity across all frequencies. It sounds like static or a fan and is widely used for sleep, focus, and masking distracting environments.