topophones

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Scope note
Devices comprised of acoustic receivers positioned at right angles to one another and attached to a shaft that is held by the user. The sound collected by these horns is conducted to ear-pieces through rubber hoses. Developed to discover the position of the source of sounds in space, as invented ca.1880, particularly for use on ships to locate the position of foghorns.
topophones
Accepted term: 01-Dec-2025