Journal article
Predicting wideband real-ear-to-coupler differences in children using wideband acoustic immittance
The Journal of the Acoustical Society of America, Vol.154(2), pp.991-1002
08/01/2023
DOI: 10.1121/10.0020660
PMCID: PMC10431946
PMID: 37581511
Abstract
Individual differences in ear-canal acoustics introduce variability into hearing aid output that can affect speech audibility. Measuring ear-canal acoustics in young children can be challenging, and relying on normative real-ear-to-coupler difference (RECD) transforms can lead to large fitting errors. Acoustic immittance measures characterize the impedance of the ear and are more easily measured than RECD. Using 226 Hz tympanometry to predict the RECD is more accurate than using age-based average RECD values. The current study sought to determine whether wideband acoustic immittance measurements could improve predictions of wideband real-ear-to-coupler difference (wRECD). 150 children ages 2-10 years with intact tympanic membranes underwent wRECD and wideband acoustic immittance measures in each ear. Three models were constructed to predict each child's measured wRECD: the age-based average wRECD, 226 Hz admittance wRECD, and wideband absorbance wRECD. The average age-based wRECD model predicted the child's measured wRECD within 3 dB in 62% of cases, but both the 226 Hz admittance and wideband absorbance wRECD were within 3 dB in 90% of cases. Using individual 226 Hz or wideband absorbance to predict wRECD improved the accuracy and precision of transforms used for pediatric hearing aid fitting.
Details
- Title: Subtitle
- Predicting wideband real-ear-to-coupler differences in children using wideband acoustic immittance
- Creators
- Ryan W McCreery - Boys Town National Research HospitalAnastasia Grindle - University of Wisconsin American Family Children's HospitalGabrielle R Merchant - Boys Town National Research HospitalJeffery Crukley - University of TorontoElizabeth A Walker - University of Iowa
- Resource Type
- Journal article
- Publication Details
- The Journal of the Acoustical Society of America, Vol.154(2), pp.991-1002
- Publisher
- Acoustical Society of America (ASA)
- DOI
- 10.1121/10.0020660
- PMID
- 37581511
- PMCID
- PMC10431946
- ISSN
- 0001-4966
- eISSN
- 1520-8524
- Grant note
- DOI: 10.13039/100000055, name: National Institute on Deafness and Other Communication Disorders, award: R01 DC013591; DOI: 10.13039/100000055, name: National Institute on Deafness and Other Communication Disorders, award: R01 DC018330; DOI: 10.13039/100000057, name: National Institute of General Medical Sciences, award: P20 GM109023; DOI: 10.13039/100000055, name: National Institute on Deafness and Other Communication Disorders, award: T35 DC008757
- Language
- English
- Date published
- 08/01/2023
- Academic Unit
- Communication Sciences and Disorders; Otolaryngology
- Record Identifier
- 9984455587802771
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