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Individualized Assessment and Prediction of Speech-Recognition Performance In Adults with Age-related Hearing Loss

Award Number: R01DC017988
ORGANIZATION: NATIONAL INSTITUTE ON DEAFNESS AND OTHER COMMUNICATION DISORDERS
OPDIV: NIH
AWARD CLASS: DISCRETIONARY
AWARD ACTIVITY TYPE: SCIENTIFIC/HEALTH RESEARCH (INCLUDES SURVEYS)

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The main complaint from listeners with age-related hearing loss is the difficulty in understanding speech in noisy environments. The sources of the speech-understanding difficulty involve auditory and cognitive factors and vary from one listener to another. Developing models of speech intelligibility that can account for these factors is necessary for predicting expected speech-recognition performance with or without the use of a hearing aid. Moreover, if such models can be efficiently fitted to individual hearing-aid users, then the amplification profile in the hearing aid can be customized to the users' specific needs. However, such efficient diagnostic procedures for fitting models of speech-intelligibility are not yet available. The proposed research program will address this issue directly. The long-term goal of the program is to establish an efficient diagnostic test to enable individualized hearing-aid fitting. As a first step toward this goal, a Bayesian adaptive procedure for fitting a widely-adopted model of speech intelligibility, i.e. the Speech Intelligibility Index (ANSI S3.5-1997), to individual listeners will be examined in detail. The Bayesian adaptive procedure uses a speech recognition task, similar to clinical speech audiometry, and it allows the estimation of the model parameters for the Speech Intelligibility Index using as few as 75 test sentences (approximately 12 minutes of testing time). These estimated parameters indicate (1) how much acoustic cues in various frequency bands are being used for speech recognition, (2) the signal-to-noise ratio required to reach a performance level of 50% correct recognition, and (3) the listener's benefits from contextual cues in speech. The relationship between these model parameters to listener's auditory and cognitive skills will be systematically evaluated using a group of older adults with diverse age and hearing status. The parameters will also be studied under two common listening conditions: speech recognition in temporally fluctuating backgrounds, and speech recognition with visual cues (i.e. the display of the talker's face). The dependencies of the model parameters for these commonly occurring listening conditions will be investigated. Additionally, the estimated model using the Bayesian adaptive procedure will be used to predict speech-recognition performance under aided and unaided conditions. Whether the individualized Speech Intelligibility Index provides additional predictive power compared to the standard model will be evaluated. The estimated model will also be used to optimize the amplification profiles for individual hearing-impaired listeners, and its relationship to the listeners' preferred amplification profiles will be examined. Upon the completion of the proposed research program, a model will be established to provide comprehensive profiling of listeners' speech-recognition performance. Moreover, a set of tools will be made available to efficiently fit the model to individual listeners and to optimize the amplification profile according to the estimated model parameters.


Issue Date FY	Funding FY	Legal Entity Name	Legal Entity Address	Legal Entity City	Legal Entity State	Legal Entity Zip Code	Legal Entity COUNTY	Legal Entity COUNTRY	Assistance Listing	Award Code	Budget Year	Action Date	Action Type	Action Amount

Issue Date FY: 2023 ( Subtotal = $299,598 )
2023	2023	UNIVERSITY OF WASHINGTON	4333 BROOKLYN AVE NE	SEATTLE	WA	98195	KING	USA	Research Related to Deafness and Communication Disorders	000	6	8/1/2023	NON-COMPETING CONTINUATION	$299,598
														Subtotal = $299,598

Issue Date FY: 2022 ( Subtotal = $299,598 )
2022	2022	UNIVERSITY OF WASHINGTON	4333 BROOKLYN AVE NE	SEATTLE	WA	98195	KING	USA	Research Related to Deafness and Communication Disorders	000	5	7/12/2022	NON-COMPETING CONTINUATION	$299,598
														Subtotal = $299,598

Issue Date FY: 2021 ( Subtotal = $299,598 )
2021	2021	UNIVERSITY OF WASHINGTON	4333 BROOKLYN AVE NE	SEATTLE	WA	98195	KING	USA	Research Related to Deafness and Communication Disorders	002	4	7/26/2021	NON-COMPETING CONTINUATION	$299,598
2021	2020	UNIVERSITY OF WASHINGTON	4333 BROOKLYN AVE NE	SEATTLE	WA	98195	KING	USA	Research Related to Deafness and Communication Disorders	001	3	1/27/2021	CHANGE OF GRANTEE / TRAINING INSTITUTION / AWARDING INSTITUTION	$143,688
2021	2019	TRUSTEES OF INDIANA UNIVERSITY	107 S INDIANA AVE	BLOOMINGTON	IN	47405	MONROE	USA	Research Related to Deafness and Communication Disorders	000	1	1/27/2021	NEW	-$143,688
														Subtotal = $299,598

Issue Date FY: 2020 ( Subtotal = $299,598 )
2020	2020	UNIVERSITY OF WASHINGTON	4333 BROOKLYN AVE NE	SEATTLE	WA	98195	KING	USA	Research Related to Deafness and Communication Disorders	003	3	8/19/2020	CHANGE OF GRANTEE / TRAINING INSTITUTION / AWARDING INSTITUTION	$0
2020	2020	TRUSTEES OF INDIANA UNIVERSITY	107 S INDIANA AVENUE	BLOOMINGTON	IN	47405	MONROE	USA	Research Related to Deafness and Communication Disorders	001	2	8/14/2020	NON-COMPETING CONTINUATION	-$315,000
2020	2020	UNIVERSITY OF WASHINGTON	4333 BROOKLYN AVE NE	SEATTLE	WA	98195	KING	USA	Research Related to Deafness and Communication Disorders	002	3	8/15/2020	CHANGE OF GRANTEE / TRAINING INSTITUTION / AWARDING INSTITUTION	$299,598
2020	2020	TRUSTEES OF INDIANA UNIVERSITY	107 S INDIANA AVENUE	BLOOMINGTON	IN	47405	MONROE	USA	Research Related to Deafness and Communication Disorders	000	2	7/14/2020	NON-COMPETING CONTINUATION	$315,000
														Subtotal = $299,598

Issue Date FY: 2019 ( Subtotal = $315,000 )
2019	2019	TRUSTEES OF INDIANA UNIVERSITY	BRYAN HALL 107 S INDIANA AVENUE	BLOOMINGTON	IN	47405	MONROE	USA	Research Related to Deafness and Communication Disorders	000	1	6/17/2019	NEW	$267,750
2019	2019	TRUSTEES OF INDIANA UNIVERSITY	BRYAN HALL 107 S INDIANA AVENUE	BLOOMINGTON	IN	47405	MONROE	USA	Research Related to Deafness and Communication Disorders	001	1	6/19/2019	NEW	$47,250
														Subtotal = $315,000

Grand Total All Awards = $1,513,392

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Individualized Assessment and Prediction of Speech-Recognition Performance In Adults with Age-related Hearing Loss

Award Number: R01DC017988

ORGANIZATION: NATIONAL INSTITUTE ON DEAFNESS AND OTHER COMMUNICATION DISORDERS

OPDIV: NIH

AWARD CLASS: DISCRETIONARY

AWARD ACTIVITY TYPE: SCIENTIFIC/HEALTH RESEARCH (INCLUDES SURVEYS)

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