Chapter 11. The Electro-Didgeridoo

The mysterious didgeridoo is in a class of instruments called labrosones (so called because their sound is made by vibrating the lips), which includes reedless brass instruments like the trumpet and bugle. Labrosonic instruments are tubes modified to convert lip-based fart noises into music. A column of air within the tube, excited into a standing wave by the vibration of the player’s lips, produces a note, which the player can alter by changing her lip vibrations. The lowest note a labrosone can sound is determined by the length of the tube; longer tubes give lower fundamental notes—the valves on a trumpet actually change the total length of the tube in order to increase the instrument’s range.

Genuine didgeridoos ...

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