Pole-zero characterization of middle ear acoustic reflectance data

Middle ear acoustic reflectance (AR) measurements have valuable clinical applications. AR is measured using a foam-tipped probe sealed in the ear canal, containing a microphone and receiver (i.e. MEPA3 system, Mimosa Acoustics). From the complex pressure response to a broadband stimulus, the acousti...

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Bibliographic Details
Published in:The Journal of the Acoustical Society of America 2012-09, Vol.132 (3_Supplement), p.1998-1998
Main Authors: Robinson, Sarah, Nguyen, Cac, Allen, Jont
Format: Article
Language:English
Online Access:Get full text
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Summary:Middle ear acoustic reflectance (AR) measurements have valuable clinical applications. AR is measured using a foam-tipped probe sealed in the ear canal, containing a microphone and receiver (i.e. MEPA3 system, Mimosa Acoustics). From the complex pressure response to a broadband stimulus, the acoustic impedance and reflectance of the middle ear can be calculated as functions of frequency. A sizeable pool of normal and pathological AR data, collected by various researchers, indicates that many pathological ears have an AR that systematically differs from normative data. Assessment of such data typically relies on consideration of the magnitude AR, or separate consideration of AR magnitude and phase. By fitting poles and zeros to AR data, we have achieved a compact and accurate representation of the complex data (
ISSN:0001-4966
1520-8524
DOI:10.1121/1.4755389