Abstract
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
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