Acoustic duct

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the auditory duct, or external passage of the ear.

See also: Acoustic

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Bowles, "Flow and geometry induced scattering of high frequency acoustic duct modes," Wave Motion, vol.
Asymmetric acoustic liners can preferentially enhance sound suppression in a preset direction for sound absorption within an acoustic duct [12].
While elbows (fabricated angle fittings) help absorb sound into the duct wall, acoustic duct liner on the interior of ducts can also help.
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