thermoacoustic array

thermoacoustic array

[¦thər·mō·ə¦kü·stik ə′rā]
(acoustics)
A sound source consisting of a light beam (usually a laser beam) modulated at the frequency of the sound to be generated; the resulting sound has its maximum value in a direction perpendicular to the axis of the light beam, and its directivity pattern has no side lobes.
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