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 formulasVariables
Z | acoustic Impedance (kg/m4*s) |
p | sound pressure (pascal) |
v | particle velocity (m/s) |
S | surface area through which an acoustic wave of frequency f propagates (m2) |