초록 ▼

A device for measuring the acoustic absorption properties of materials such as liners for jet engines has a first housing, an acoustic driver configured to provide acoustic energy to the first housing, a second housing attached to the first housing, and an acoustic driver configured to provide acous

A device for measuring the acoustic absorption properties of materials such as liners for jet engines has a first housing, an acoustic driver configured to provide acoustic energy to the first housing, a second housing attached to the first housing, and an acoustic driver configured to provide acoustic energy to the second housing. Acoustic sensors are used to measure the acoustic energy emitted from the two housings and to measure the absorption of each of the housings.

대표청구항 ▼

[ What is claimed is:] [1.] 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 co

[ What is claimed is:] [1.] 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.