Definition of Brown note
The brown note (sometimes brown tone or frequency) is a fictional infrasonic frequency capable of causing fecal incontinence by creating acoustic resonance in the human bowel. Considered an urban myth, the name is a metonym for the common color of human faeces. Attempts to demonstrate the existence of a "brown note" using sound waves transmitted through the air have failed.
Frequencies supposedly involved are between 5 and 9 Hz, which are below the lower frequency limit of human hearing. High-power sound waves below 20 Hz are felt in the body.
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Frequently asked questions
What is Brown note?
The brown note (sometimes brown tone or frequency) is a fictional infrasonic frequency capable of causing fecal incontinence by creating acoustic resonance in the human bowel.