acoustic impedance

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  • noun

Synonyms for acoustic impedance

opposition to the flow of sound through a surface

References in periodicals archive ?
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.
This polymeric surface provides substantially increased acoustical impedance and, therefore, a significantly brighter ultrasound image of medical devices to which it is applied.
These interfaces yield a large acoustical impedance differential and improve scattering so that coated devices can be well visualized under ultrasound at virtually any angle.
This unique coating technology employs acoustical irregularities in a thin, biocompatible, smooth, flexible, adherent polymeric surface to substantially increase acoustical impedance.