Publication
Title
LDV measurement of small nonlinearities in flat and curved membranes. A model for eardrum nonlinear acoustic behaviour
Author
Abstract
Laser Doppler Vibrometry is an intrinsic highly linear measurement technique which makes it a great tool to measure extremely small nonlinearities in the vibration response of a system. Although the measurement technique is highly linear, other components in the experimental setup may introduce nonlinearities. An important source of artificially introduced nonlinearities is the speaker, which generates the stimulus. In this work, two correction methods to remove the effects of stimulus nonlinearity are investigated. Both correction methods were found to give similar results but have different pros and cons. The aim of this work is to investigate the importance of the conical shape of the eardrum as a source of nonlinearity in hearing. We present measurements on flat and indented membranes. The data shows that the curved membrane exhibit slightly higher levels of nonlinearity compared to the flat membrane.
Language
English
Source (journal)
AIP conference proceedings / American Institute of Physics. - New York
Measurements by Laser and Noncontact Techniques: Advances and Applications
Source (book)
12th International AIVELA Conference on Vibration Measurements by Laser, and Noncontact Techniques - Advances and Applications, JUN 29-JUL 01, 2016, Ancona, ITALY
Publication
Melville : Amer inst physics, 2016
ISSN
0094-243X
ISBN
978-0-7354-1397-9
Volume/pages
1740(2016), 10 p.
Article Reference
050005
ISI
000380817900015
Medium
E-only publicatie
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 02.09.2016
Last edited 04.09.2017
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