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.
|Title of host publication||Proceedings of Acoustics 2012 Hong Kong|
|Publisher||The Hong Kong Institute of Acoustics (HKIOA)|
|Publication status||Published - 2012|
|Event||Acoustics 2012 Hong Kong - Hong Kong, China|
Duration: 13 May 2012 → 18 May 2012
|Conference||Acoustics 2012 Hong Kong|
|Period||13/05/2012 → 18/05/2012|
Bibliographical noteSession 5pNSd. Noise, ASA Committee on Standards, Psychological and Physiological Acoustics, and Animal Bioacoustics: Impulsive Noise Exposure Metrics: Development and Validation
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).