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Convention Paper

Modeling of External Ear Acoustics for Insert Earphone Usage

Authors: Hiipakka, Marko; Tikander, Miikka; Karjalainen, Matti

AES Convention 126 · Paper 7739 · May 2009

Abstract

Although acoustics of the external ear has been studied extensively for auralization and hearing aids, the acoustic behavior with insert headphones is not as well known. Our research focused on the effects of outer ear physical dimensions, particularly to sound pressure at the eardrum. The main parameter was the length of the canal, but eardrum’s damping of resonances was also studied. Ear canal simulators and a dummy head were constructed. Measurements were also performed from human ear canals. The study was carried out both with unblocked ear canals and when the canal entrance was blocked with an insert earphone. Special insert earphones with in-ear microphones were constructed for this purpose. Physics-based computational models were finally used to validate the approach.

Details

Published in
AES Convention 126
AES Convention
126
Paper number
7739
Publication date
May 6, 2009
Session subject
Hearing
Affiliation
Helsinki University of Technology, Espoo, Finland (See document for exact affiliation information.)
Type
Convention Paper