Brown noise, also known as Brownian noise or red noise, is a type of random noise that has a spectral density that decreases with frequency. It is characterized by a deep and mellow sound that is similar to the sound of a low-pitched waterfall or the rumble of distant thunder. Brown noise is often used in audio engineering and music production as a background noise to mask unwanted sounds or create a calming effect. It is also sometimes used in therapy to help people relax or sleep.
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