Changes in distortion product oto-acoustic emissions after exposure to continuous and impulsive noise

Miguel Angel Aranda de Toro, Rodrigo Pizarro Ordoñez, Dorte Hammershøi

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Abstract

Temporary changes in hearing of the subjects were monitored with distortion product otoacoustic emissions (DPOAEs) after control sound exposures in a laboratory. The objectives of the experiment was to investigate whether the +5 dB penalty for impulsiveness used in international standards and legislation correlates to a higher risk of hearing damage. Subjects were exposed to two types of binaural recordings consisting of a continuous broad-band noise-exposure normalized to LEX,8h = 80 dBA and the interaction of the previous stimulus with a noise of impulsive character normalized to LEX,8h = 75 + 5dB penalty = 80 dBA. The results shown that the effects on DPOAE levels from the two stimuli could be compared in terms of their total acoustic energy.
Original languageEnglish
Title of host publicationProceedings of Acoustics 2012 Hong Kong
PublisherThe Hong Kong Institute of Acoustics (HKIOA)
Publication date2012
Pages383-383
Publication statusPublished - 2012
EventAcoustics 2012 Hong Kong - Hong Kong, China
Duration: 13 May 201218 May 2012

Conference

ConferenceAcoustics 2012 Hong Kong
CountryChina
CityHong Kong
Period13/05/201218/05/2012

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Bibliographical note

Session 5pNSd. Noise, ASA Committee on Standards, Psychological and Physiological Acoustics, and Animal Bioacoustics: Impulsive Noise Exposure Metrics: Development and Validation
Paper 5pNSd2.

Cite this

de Toro, M. A. A., Ordoñez, R. P., & Hammershøi, D. (2012). Changes in distortion product oto-acoustic emissions after exposure to continuous and impulsive noise. In Proceedings of Acoustics 2012 Hong Kong (pp. 383-383). The Hong Kong Institute of Acoustics (HKIOA).