Acoustic Impedance

Description

Acoustic impedance is the measure of the opposition that a system presents to an acoustic flow when an acoustic pressure is applied to it. Acoustic impedance indicates how much sound pressure is generated by the vibration of molecules of a particular acoustic medium at a given frequency. Acoustic impedance Z (or sound impedance) is frequency (f) dependent. It is very useful, for example, for describing the behavior of musical wind instruments.

Related formulas

Variables

Zacoustic Impedance (kg/m4*s)
psound pressure (pascal)
vparticle velocity (m/s)
Ssurface area through which an acoustic wave of frequency f propagates (m2)