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1. (WO2018146609) METHOD AND APPARATUS FOR MEASURING OTOACOUSTIC EMISSIONS

Pub. No.:    WO/2018/146609    International Application No.:    PCT/IB2018/050779
Publication Date: Fri Aug 17 01:59:59 CEST 2018 International Filing Date: Fri Feb 09 00:59:59 CET 2018
IPC: A61B 5/12
H04R 25/00
A61B 5/00
Applicants: UNIVERSITÀ DEGLI STUDI DI ROMA "TOR VERGATA"
ISTITUTO NAZIONALE PER L'ASSICURAZIONE CONTRO GLI INFORTUNI SUL LAVORO
Inventors: MOLETI, Arturo
SANJUST, Filippo
SISTO, Renata
CERINI, Luigi
Title: METHOD AND APPARATUS FOR MEASURING OTOACOUSTIC EMISSIONS
Abstract:
The present invention relates to a method and an apparatus for measuring otoacoustic emissions, which assures high measurement accuracy, making it independent of the boundary conditions that characterise the measurement environment. In particular, considering an acoustic wave generated in an ear canal (21) delimited at a first end by an ear drum (20) and at a second end by a probe (11) partially positioned in an entry area of the ear canal (21), where the acoustic wave comprises at least one otoacoustic emission signal component evoked by a stimulus acoustic signal generated by the probe (11), said component being generated by the ear drum (21), the method comprises the steps that consist of: - measuring (130) by means of the probe simultaneously the acoustic pressure (p) and the velocity (v) of said acoustic wave; - on the basis of the measurements of acoustic pressure (p) and acoustic velocity (v) thus obtained, calculating (140) the intensity (IOAE) of the evoked otoacoustic emission component on the basis of the equation: preferably, the stimulus acoustic signal is equalised on the basis of the active intensity of the measured acoustic wave.