3rd French conference on acoustics
J. Phys. IV France 04 (1994) C5-391-C5-394
Casque antibruit actif basses-fréquences et audition dans le bruitJ.-C. BÉRA1, C. MICHEYL2 and L. COLLET2
1 URA 263 du CNRS, Centre Acoustique de l'E.C.L., 36 avenue de Collongue, BP. 163, 69131 Ecully cedex, France
2 URA 1447du CNRS, Laboratoire de Physiologie Sensorielle "Audition et Voix", HEH Pavillon U, 3 place d'Arsonval, 69437 Lyon cedex 03, France
A low-frequency active anti-noise headset has been made, and tested on human ears with regard to hearing in noise. Psychoacoustic methods are used in order to quantify the improvement in audibility and intelligibility. Under low-frequency noise, a spectacular effect of anti-noise is observed, while headset wearing brings just a very little global improvement because of negative passive effect. Besides optimization of passive acoustic attenuation, evaluation of such an apparatus is faced with interindividual hearing in noise variability.
© EDP Sciences 1994