Calibration of otoacoustic emission probe microphones
نویسندگان
چکیده
منابع مشابه
Development of a Calibrator for Simultaneous Calibration of Multiple Microphones on an Acoustic Energy Density Probe
This paper presents the theory, design, and development of a microphone calibrator used to calibrate multiple microphones simultaneously. This work was done in conjunction with the development of an acoustic energy density (ED) probe, which is used to measure the acoustic pressure and particle velocity of a sound field. The probe of interest in this paper was developed to measure ED using multi...
متن کاملEffect of calibration method on distortion-product otoacoustic emission measurements at and around 4 kHz.
OBJECTIVES Distortion-product otoacoustic emissions (DPOAEs) collected after sound pressure level (SPL) calibration are susceptible to standing waves that affect measurements at the plane of the probe microphone due to overlap of incident and reflected waves. These standing-wave effects can be as large as 20 dB, and may affect frequencies both above and below 4 kHz. It has been shown that forwa...
متن کاملInfluence of calibration method on distortion-product otoacoustic emission measurements: II. threshold prediction.
OBJECTIVES Distortion-product otoacoustic emission (DPOAE) stimulus calibrations are typically performed in sound pressure level (SPL) before DPOAE measurements. These calibrations may yield unpredictable DPOAE response levels, presumably because of the presence of standing waves in the ear canal. Forward pressure level (FPL) has been proposed as an alternative method for stimulus calibration b...
متن کاملInfluence of calibration method on distortion-product otoacoustic emission measurements: I. test performance.
OBJECTIVE Calibration errors in distortion-product otoacoustic emission (DPOAE) measurements because of standing waves cause unpredictable changes in stimulus and DPOAE response level. The purpose of this study was to assess the extent to which these errors affect DPOAE test performance. Standard calibration procedures use sound pressure level (SPL) to determine specified levels. Forward pressu...
متن کاملOtoacoustic Emission in Tinnitus Patients
The purpose of the study was to determine the effect of tinnitus and total effect of tinnitus and the hearing loss function on the distortion product otoacoustic emission. Tinnitus patients were selected to exhibit normal hearing and such tinnitus patients who exhibited the increasing or notch-like sensorineural hearing loss. It was found that the cochlear hearing activity expressed in terms of...
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ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 2011
ISSN: 0001-4966
DOI: 10.1121/1.3632047