acoustic impedance

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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
resistance - any mechanical force that tends to retard or oppose motion
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References in periodicals archive ?
The AMV indicates the ability of vibration energy to radiate through the soundboard, and a higher AMV means lower acoustical impedance:
The variation of Density, Viscosity, Velocity, adiabatic compressibility (Pad), intermodular free length (Lf), relaxation time (X), free volume (Vf), internal pressure (ni), acoustical impedance (Z),constant (W), ultrasonic attenuation ([alpha]/f2), Rao's constant (R), molar volume (Vm), and cohesive energy (CE) of pyrimidine derivatives at 313 K in different concentrations are shown in Figures 1 to 13.