A master thesis from Aalborg University
Designing a 3D-Printable Occluded-Ear Simulator
Author(s)
Term
4. term
Education
Publication year
2020
Submitted on
2020-06-03
Pages
155 pages
Abstract
This project investigates the feasiblity of creating a one-piece model of an IEC 60318-4 occluded-ear simulator that can be 3D-printed. The specific acoustic impedance is measured on multiple iterations of the 3D-printed model, as well as on a commercial IEC 60318-4 coupler (G.R.A.S. RA0045). These measurements revealed expected deviations based on simulations. Measuring the amplitude response of five insert earphones using the 3D-printed design revealed matching deviations to that of the specific acoustic impedance. A design was created with less than 4.4 dB deviation in free-field related one-third-octave bands across measurements on five different insert earphones, in the frequency range 200 - 10 000 Hz.
Keywords
Impedance Tupe ; Specific Acoustic Impedance ; Impedance ; Acoustic ; Coupler ; Occluded-Ear Simulator ; 711 ; 60318-4 ; 3D-Print ; 3D
Documents
Colophon: This page is part of the AAU Student Projects portal, which is run by Aalborg University. Here, you can find and download publicly available bachelor's theses and master's projects from across the university dating from 2008 onwards. Student projects from before 2008 are available in printed form at Aalborg University Library.
If you have any questions about AAU Student Projects or the research registration, dissemination and analysis at Aalborg University, please feel free to contact the VBN team. You can also find more information in the AAU Student Projects FAQs.