exponential horn

exponential horn
: a loudspeaker horn whose sectional area varies exponentially along its length

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a loudspeaker horn with a cross-sectional area varying as a constant raised to an exponent proportional to the distance from the vertex.

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exponential horn,
a horn or tube used in certain loudspeakers, having a variable rate of size increases to improve performance on a low-frequency level.

Useful english dictionary. 2012.

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