Patent ID: 6119521
Filing Date: 2000-09-19
Classification: G01N

Abstract:
A device for measuring acoustic absorption properties of an acoustic absorber, the device comprising:a) a first tube having proximal and distal ends;b) a first acoustic driver configured to provide acoustic energy to the first tube;c) at least one first acoustic sensor configured to sense acoustic energy within the first tube and operative to generate an output corresponding thereto;d) a second tube having proximal and distal ends;e) a second acoustic driver configured to provide acoustic energy to the second tube;f) at least one second acoustic sensor configured to provide acoustic energy to the second tube and operative to generate an output corresponding thereto;g) wherein the first and second tubes cooperate to provide two sources of acoustic energy having a desired phase difference therebetween to substantially simulate an acoustic condition to which the acoustic absorber may be exposed for purposes of measuring the acoustic absorption properties thereof.