title: Reciprocal measurement of acoustic feedback paths in hearing aids.
abstract: A reciprocal measurement procedure to measure the acoustic feedback path in hearing aids is investigated. The advantage of the reciprocal measurement compared to the direct measurement is a significantly reduced sound pressure in the ear. The direct and reciprocal measurements are compared using measurements on a dummy head with adjustable ear canals, different earmolds, and variations in the outer sound field. The results show that the reciprocal measurement procedure can be used to obtain plausible feedback paths, while reducing the sound pressure in the ear canal by 30 to 40 dB.
authors.affiliation: Institute of Hearing Technology and Audiology, Jade Hochschule, Oldenburg, Germany tobias.sankowsky@jade-hs.de, matthias.blau@jade-hs.de.
authors.forename: Tobias
authors.initials: T
authors.lastname: Sankowsky-Rothe
authors.affiliation: Institute of Hearing Technology and Audiology, Jade Hochschule, Oldenburg, Germany tobias.sankowsky@jade-hs.de, matthias.blau@jade-hs.de.
authors.forename: Matthias
authors.initials: M
authors.lastname: Blau
authors.affiliation: Department of Medical Physics and Acoustics and Cluster of Excellence "Hearing4All," University of Oldenburg, Oldenburg, Germany henning.schepker@uni-oldenburg.de, simon.doclo@uni-oldenburg.de.
authors.forename: Henning
authors.initials: H
authors.lastname: Schepker
authors.affiliation: Department of Medical Physics and Acoustics and Cluster of Excellence "Hearing4All," University of Oldenburg, Oldenburg, Germany henning.schepker@uni-oldenburg.de, simon.doclo@uni-oldenburg.de.
authors.forename: Simon
authors.initials: S
authors.lastname: Doclo
mesh_terms: D000161:Acoustic Stimulation; D004424:Ear Canal; D004867:Equipment Design; D005246:Feedback; D006310:Hearing Aids; D006801:Humans; D008953:Models, Anatomic; D009622:Noise; D011312:Pressure; D013061:Speech Acoustics; D014160:Transducers, Pressure