Welcome to the cult of brown noise, a sometimes hazily-defined category of neutral, dense sound that contains every frequency our ears can detect. Brown noise is like white noise but has a lower, deeper quality. She added that many patients have come in asking about brown and white noise as of late, often pointing to posts they’ve seen on social media. What is brown noise? When we play brown noise, we hear every frequency that the ear is able to detect at once, said Dr. Berlau.

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