A case-study on the continuous use of an in-ear dosimetric device

Mazur, Kuba; Voix, Jérémie

doi:10.1121/1.4805325

Cited by 3 publications

(1 citation statement)

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“…To ensure safety and avoid noise-induced hearing loss, workers in noisy environments are usually equipped with hearing protection devices and dosimeters calculating the individual's noise dose over the work day. Recently, in-ear dosimetry has gained much interest as it offers a more accurate representation of the worker's true noise dose [6,7]. An obstacle with in-ear dosimetry is the effect of physiological signals on the accumulated noise dose [8,9].…”

Section: Introductionmentioning

confidence: 99%

Classification of Nonverbal Human Produced Audio Events: A Pilot Study

et al. 2018

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The accurate classification of nonverbal human produced audio events opens the door to numerous applications beyond health monitoring. Voluntary events, such as tongue clicking and teeth chattering, may lead to a novel way of silent interface command. Involuntary events, such as coughing and clearing the throat, may advance the current state-of-the-art in hearing health research. The challenge of such applications is the balance between the processing capabilities of a small intra-aural device and the accuracy of classification. In this pilot study, 10 nonverbal audio events are captured inside the ear canal blocked by an intra-aural device. The performance of three classifiers is investigated: Gaussian Mixture Model (GMM), Support Vector Machine and Multi-Layer Perceptron. Each classifier is trained using three different feature vector structures constructed using the mel-frequency cepstral (MFCC) coefficients and their derivatives. Fusion of the MFCCs with the auditoryinspired amplitude modulation features (AAMF) is also investigated. Classification is compared between binaural and monaural training sets as well as for noisy and clean conditions. The highest accuracy is achieved at 75.45% using the GMM classifier with the binaural MFCC+AAMF clean training set. Accuracy of 73.47% is achieved by training and testing the classifier with the binaural clean and noisy dataset.

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Section: Introductionmentioning

confidence: 99%

Classification of Nonverbal Human Produced Audio Events: A Pilot Study

et al. 2018

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In-ear noise dosimetry under earplug: Method to exclude wearer-induced disturbances

Bonnet

Nélisse

Nogarolli

et al. 2019

International Journal of Industrial Ergonomics

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Effects of ear canal occlusion on hearing sensitivity: A loudness experiment

Bonnet

Nélisse

Voix

2018

The Journal of the Acoustical Society of America

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Over the last century, hearing research has repeatedly reported differences in loudness perception when different types of transducers are being used. One of the effects of using different transducers is that listening may be performed via an open ear (loudspeaker), a cushioned ear (headphones), or an occluded ear (hearing aid receivers, insert earphones). The question of whether varying the acoustic load applied to the ear canal might impact hearing sensitivity has therefore become essential given the need to establish realistic noise damage risk criteria in an attempt to prevent noise-induced hearing loss for any given listening condition. Although such loudness discrepancies in the cushioned ear have been recently proven to be caused by loudness measurement artifacts, currently available data do not exclude a possible impact of ear canal occlusion on loudness perception. This paper presents the results of a loudness balance test carried out on 18 normal-hearing listeners. Using an earplug to occlude the canal, in-ear sound pressure levels were compared between the occluded ear and the cushioned ear at equal loudness. The results show agreement within 1 dB between the two listening conditions, and support the conclusion that loudness does not depend on the type of acoustic load applied to the ear canal.

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A case-study on the continuous use of an in-ear dosimetric device

Cited by 3 publications

References 0 publications

Classification of Nonverbal Human Produced Audio Events: A Pilot Study

Classification of Nonverbal Human Produced Audio Events: A Pilot Study

In-ear noise dosimetry under earplug: Method to exclude wearer-induced disturbances

Effects of ear canal occlusion on hearing sensitivity: A loudness experiment

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