Title :
Measurement of speed of sound in a gas-filled acoustic resonator
Author :
Benedetto, G. ; Gavioso, R.M. ; Spagnolo, R.
Author_Institution :
Istituto Elettrotecnico Nazionale Galileo Ferraris, Torino, Italy
Abstract :
Gas-filled resonators are excellent tools both for precision measurement of sound velocity and for photoacoustic spectroscopy applications. This paper aims to show the major selectivity obtainable in excitation of acoustic modes varying the optical absorption coefficient of the gas when an optical source is used. The effect of microphone performance on the response of the resonator in a typical range of gas pressure values is also considered
Keywords :
acoustic resonance; acoustic resonators; acoustic wave velocity measurement; microphones; optical constants; photoacoustic effect; excitation of acoustic modes; gas pressure values; gas-filled acoustic resonator; measurement accuracy; microphone performance; optical absorption coefficient; photoacoustic spectroscopy; precision measurement; selectivity; sound velocity; speed of sound; Absorption; Acoustic measurements; Acoustic waves; Laser excitation; Microphones; Optical resonators; Optical surface waves; Resonance; Resonant frequency; Velocity measurement;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1996. IMTC-96. Conference Proceedings. Quality Measurements: The Indispensable Bridge between Theory and Reality., IEEE
Conference_Location :
Brussels
Print_ISBN :
0-7803-3312-8
DOI :
10.1109/IMTC.1996.507387
