acoustic shadow


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acoustic shadow

[ə′küs·tik ′shad·ō]
(acoustics)
A region immediately behind an object placed in the path of a sound wave whose wavelength is much smaller than the object, in which the initial sound wave is cut off by the object and the sound intensity is determined by the diffraction and interference of sound waves bent around the obstacle.
References in periodicals archive ?
The decrease of the acoustic effectiveness could be explained by the fact that while moving away from the noise barrier, the effect of the diffraction of low frequency sound waves over the edges of the screen becomes more prominent, thus decreasing the acoustic shadow zone of noise damping.
Mr Ian Johnson, consultant surgeon at the Freeman Hospital, Newcastle and a member of the Advisory Group for Single Sided Deafness says: "In the majority of patients with Single Sided Deafness there is a gross disability because of the loss of the stereo effect of hearing leaving the patient with an acoustic shadow along with problems of identifying where sound is coming from.
Entertainment was provided by Michael and Leigh Ann Carley of Acoustic Shadow and Rain Jaudon and Cheri Salvetti of Rhythm and Rain.
Millili stated, "Regardless of observer experience in burn evaluation, obliteration of the dermal/fat interface and widening of the dermal acoustic shadow provides reliable markers of deep thermal injury.
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