de Toro, Miguel Angel Aranda4; Ordoñez, Rodrigo Pizarro1; Hammershøi, Dorte3
1 Department of Electronic Systems, The Faculty of Engineering and Science (ENG), Aalborg University, VBN2 Acoustics, The Faculty of Engineering and Science (ENG), Aalborg University, VBN3 The Faculty of Engineering and Science (TECH), Aalborg University, VBN4 unknown
Temporary changes in the hearing of human subjects were monitored with distortion product otoacoustic emissions (DPOAEs) after control sound exposures in a laboratory. The objectives of the experiment were 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~dB and the interaction of the previous stimulus with a noise of impulsive character normalized to LEX,8h = 75 + 5~dB penalty = 80~dB. The results show that the effects on DPOAE levels from the two stimuli could be compared in terms of their total acoustic energy.
Acoustical Society of America. Journal, 2012, Vol 131, Issue 4, Pt. 2, p. 3531-3531