Acoustic impedance sensor designed to measure the input acoustic impedance of a waveguide
US8544327B2 · kind B2 · utility
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4Claims
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Key dates
| Filing date | Jun 26, 2009 |
| Grant date | Oct 1, 2013 |
| Priority date | — |
| Expiry date | Mar 27, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01H15/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention concerns 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 pellet that makes it possible for the determination of the acoustic impedance of a passive acoustic element to remain coherent for low frequencies while preserving an inexpensive implementation of the sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.