Acoustic impedance sensor designed to measure the input...

Details Acoustic impedance sensor designed to measure the input... Acoustic impedance sensor designed to measure the input...

G - Physics

01

H

G01H 15/00 (2006.01)

Patent

CA 2729312

The present invention relates to an acoustic impedance sensor designed to measure the input acoustic impedance of a waveguide. This sensor is characterized in that the source is a piezoelectric wafer which allows the determination of the acoustic impedance of a passive acoustic element to remain coherent for low frequencies while keeping the implementation of the sensor inexpensive.

La présente invention concerne un capteur d'impédance acoustique prévu pour mesurer l'impédance acoustique d'entrée d'un guide d'onde. Ce capteur est caractérisé en ce que la source est une pastille piezzo- électrique qui permet que la détermination de l'impédance acoustique d'un élément acoustique passif reste cohérente pour des basses fréquences tout en préservant une mise en oeuvre peu coûteuse du capteur.

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