Brunskog, Jonas

Jeong, Cheol-Ho

M. Harte, James

Zapata Rodriguez, Valentina

Verification that Hearing Aids (HA) have been fitted correctly in pre-lingual infants and hard-to-test adults is an important emerging application in technical audiology. These test subjects are unable to undergo reliable behavioral testing, so an objective method is required. Auditory steady-state responses (ASSR), recorded in a sound field is a promising technology to verify the hearing aid fitting. The test involves the presentation of the auditory stimuli via a loudspeaker, unlike the usual procedure of delivering via insert earphones. Room reverberation clearly may significantly affect the features of the stimulus important for eliciting a strong electrophysiological response, and thus complicate its detection. This study investigates the effect of different room acoustic conditions on recorded ASSRs via an auralisation approach using insert earphones. Fifteen normal-hearing listeners were tested using narrow-band (NB) CE-Chirps centered at the octave-bands of 0.5, 1.0, 2.0 and 4.0 kHz. These stimuli were convolved with impulse responses of three rooms simulated using a Green’s function approach to recreate different sound-field conditions. Comparisons with the unmodified stimuli recordings (reference condition) quantified that room acoustics significantly affects the amplitudes of the ASSRs

Online Research Database In Technology

The Effect of Objective Room Acoustic Parameters on Auditory Steady-State Responses -DTU Orbit (08/11/2017) The Effect of Objective Room Acoustic Parameters on Auditory Steady-State ResponsesVerification that Hearing Aids (HA) have been fitted correctly in pre-lingual infants and hard-to-test adults is an importantemerging application in technical audiology. These test subjects are unable to undergo reliable behavioral testing, so anobjective method is required. Auditory steady-state responses (ASSR), recorded in a sound field is a promising technologyto verify the hearing aid fitting. The test involves the presentation of the auditory stimuli via a loudspeaker, unlike the usualprocedure of delivering via insert earphones. Room reverberation clearly may significantly affect the features of thestimulus important for eliciting a strong electrophysiological response, and thus complicate its detection. This studyinvestigates the effect of different room acoustic conditions on recorded ASSRs via an auralisation approach using insertearphones. Fifteen normal-hearing listeners were tested using narrow-band (NB) CE-Chirps centered at the octave-bandsof 0.5, 1.0, 2.0 and 4.0 kHz. These stimuli were convolved with impulse responses of three rooms simulated using aGreen’s function approach to recreate different sound-field conditions. Comparisons with the unmodified stimuli recordings(reference condition) quantified that room acoustics significantly affects the amplitudes of the ASSRs. General informationState: PublishedOrganisations: Department of Electrical Engineering, Acoustic Technology, Interacoustics A/SAuthors: Zapata Rodriguez, V. (Intern), M. Harte, J. (Ekstern), Jeong, C. (Intern), Brunskog, J. (Intern)Number of pages: 4Publication date: 2016 Host publication informationTitle of host publication: Proceedings of DAGA 2016Publisher: Deutsche Gesellschaft für Akustik e.V.Main Research Area: Technical/natural sciencesConference: DAGA 2016 Aachen, Aachen, Germany, 14/03/2016 - 14/03/2016Source: PublicationPreSubmissionSource-ID: 122968697Publication: Research - peer-review › Article in proceedings – Annual report year: 2016 

The Effect of Objective Room Acoustic Parameters on Auditory Steady-State Responses

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The Effect of Objective Room Acoustic Parameters on Auditory Steady-State Responses

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