Analysis of human tone-burst-evoked otoacoustic emissions

Authors

  • Reinhart Frosch Sommerhaldenstrasse 5B, CH-5200 Bragg, Switzerland

Keywords:

Acoustic emissions, Forecasting, Resonators, Basilar membranes, Mechanical energies, Resonance region, Satellite peaks, Tone bursts

Abstract

Human click-evoked otoacoustic emissions (OAE) were analyzed to agree with cochlear-map-based predictions. Four human cochlear maps, the passive-peak (PP) map, the (low-level) active-peak (AP) map, the basilar-membrane resonator (BMR) map, and the internal organ-of-Corti resonator (IOCR) map, are studied. The satellite peaks of an 80-dB tone burst have sound-pressure levels (SPLs) of 49dB, 39dB, and are therefore strongly amplified by the OHCs in their IOCR resonance regions. A part of the mechanical energy generated by these OHCs is transported back to the cochlear base by a reverse TW and thus causes OAEs. The large-delay beats in the 2- and 4-kHz parts are consistent with being due to the superposition of two SOAEs. The tone-burst-evoked OAEs, in spite of differing appreciably from the click-evoked OAEs of Frosch, are found to be compatible with predictions based on the human cochlear maps.

Published

2012-09-01

How to Cite

1.
Frosch R. Analysis of human tone-burst-evoked otoacoustic emissions. Canadian Acoustics [Internet]. 2012Sep.1 [cited 2021May17];40(3):116-7. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2566

Issue

Section

Proceedings of the Acoustics Week in Canada