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acoustic impedance
(redirected from Acoustical impedance)

    Also found in: Medical, Encyclopedia, Wikipedia 0.01 sec.
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Noun1.acoustic impedance - opposition to the flow of sound through a surface; acoustic resistance is the real component of acoustic impedance and acoustic reactance is the imaginary component
acoustic reactance, acoustic resistance
resistance - any mechanical force that tends to retard or oppose motion
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Whenever a sound wave encounters a material with different acoustical impedance, the probe detects an echo.
Medical Ultrasonography - Pulsating Map of the Human Body by Gary Gordon / Business community
At very low frequencies, the results are sensitive to the value of the acoustical impedance since it is difficult to measure impedance accurately below 50 Hz using ASTM E1050.
Using numerical acoustics to predict the attenuation of HVAC plenums by Herrin, D.W.; Tao, Z.; Scalf, E.L.; Allen, S.A.; Seybert, A.F. / ASHRAE Transactions
Christina Vacca, Aria Analytics, followed with "'Fingerprints' of Inks Using Acoustical Impedance Technology.
NPIRI conference review by Savastano, David / Ink World
 
 
 
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