Uploaded June 2021 | Updated September 2026, 7 hours ago

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In this experiment, students measure the absorption, reflection coefficients and acoustic impedance of samples using Impedance tube apparatus. The impedance tube apparatus is commonly used to measure specific impedances, sound absorption coefficients (SACs), sound transmission losses (STLs) and acoustic properties (characteristic impedances, propagation wave numbers, effective densities, bulk moduli) of acoustic materials in normal incidence conditions.

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