Azimuthal auditory localization of gunshots in a realistic field environment: Effects of open-ear versus hearing protection-enhancement devices (HPEDs), military vehicle noise, and hearing impairment

2012 ◽  
Vol 51 (sup1) ◽  
pp. S20-S30 ◽  
Author(s):  
Kristen A. Talcott ◽  
John G. Casali ◽  
John P. Keady ◽  
Mead C. Killion
Keyword(s):  
Hearing Impairment ◽  
Auditory Localization ◽  
Hearing Protection ◽  
Vehicle Noise ◽  
Environment Effects ◽  
Field Environment ◽  
Military Vehicle

Auditory localization in the horizontal plane with single and double hearing protection

2002 ◽  
Vol 112 (5) ◽  
pp. 2244-2244
Author(s):  
Douglas S. Brungart ◽  
Alexander J. Kordik ◽  
Brian D. Simpson
Keyword(s):  
Horizontal Plane ◽  
Auditory Localization ◽  
Hearing Protection

Auditory Distance Judgments in Noise, with and without Hearing Protection

1985 ◽  
Vol 29 (8) ◽  
pp. 811-813 ◽  
Author(s):  
Patrick L. McMurtry ◽  
Donald H. Mershon
Keyword(s):  
Distance Perception ◽  
Apparent Distance ◽  
Auditory Localization ◽  
Hearing Protection ◽  
Target Sound ◽  
Protective Devices ◽  
Auditory Distance ◽  
High Level ◽  
Distance Judgments ◽  
Present Understanding

Previous studies of the effects of hearing protective devices (HPDs) on auditory localization have all been concerned with directional judgments. The present study examined the influence of such devices upon judgments of distance under conditions of noise. Blindfolded observers were required to verbally report the apparent distance to a target sound under one of three conditions: quiet (60 dBA), noise (90 dBA) or noise (90 dBA) while wearing inserted foam plugs. Judgments in quiet were found to be reasonably correct. The presence of high-level noise, however, decreased the judged distances significantly. The use of the HPD neither improved these latter judgments, nor did it produce any further error. The findings are fully consistent with present understanding of the bases for auditory distance perception.

scholarly journals The Impact of Hearing Impairment, Perceptions and Attitudes about Hearing Loss, and Noise Exposure Risk Patterns on Hearing Handicap among Farm Family Members

AAOHN Journal ◽  
2007 ◽  
Vol 55 (6) ◽  
pp. 227-234 ◽  
Author(s):  
Ann Carruth ◽  
Ashly E. Robert ◽  
Annette Hurley ◽  
Paula S. Currie
Keyword(s):  
Hearing Loss ◽  
Hearing Impairment ◽  
Noise Exposure ◽  
Family Members ◽  
Hearing Protection ◽  
Exposure Risk ◽  
Farm Family ◽  
Perceptions And Attitudes ◽  
Hearing Handicap ◽  
The Impact

Farm noise exposure is the major cause of noise-induced hearing loss among farmers. Hearing impairment associated with hearing loss, however, may not adequately represent communication handicap and the impact on quality of life. This descriptive correlational study examines the impact of hearing impairment, perceptions and attitudes about hearing loss, and noise exposure risk patterns on hearing handicap among farm family members. A convenience sample of 56 farmers and family members recruited from community-based agricultural events was studied. A hearing impairment was noted in the majority of the participants (80.4%). Fewer than 10 reported regularly wearing protection during work or recreational activities. High-frequency hearing loss in the left ear ( F = 10.30, p < .002), the attitude that wearing hearing protection prevents others from getting one's attention ( F = 11.90, p < .001), and the self-reported description of hearing ( F = 6.66, p < .013) significantly predicted hearing handicap using multiple regression analysis. Farmers and family members do not use hearing protection because they are concerned they will not hear others who are trying to communicate with them. The findings of this study confirm that this attitude, along with hearing loss in the left ear, is associated with a communication handicap in work settings. Although being able to hear others on a day-to-day basis is important, this attitude may contribute to behaviors leading to hearing loss and decreased communication over time.

Hearing Aid Amplification Reduces Communication Effort of People With Hearing Impairment and Their Conversation Partners

2020 ◽  
Vol 63 (4) ◽  
pp. 1299-1311 ◽  
Author(s):  
Timothy Beechey ◽  
Jörg M. Buchholz ◽  
Gitte Keidser
Keyword(s):  
Hearing Impairment ◽  
Hearing Aid ◽  
Normal Hearing ◽  
Referential Communication ◽  
Hearing Impaired ◽  
Directional Hearing ◽  
Acoustic Environment ◽  
Communication Task ◽  
Acoustic Environments ◽  
The Impact

Objectives This study investigates the hypothesis that hearing aid amplification reduces effort within conversation for both hearing aid wearers and their communication partners. Levels of effort, in the form of speech production modifications, required to maintain successful spoken communication in a range of acoustic environments are compared to earlier reported results measured in unaided conversation conditions. Design Fifteen young adult normal-hearing participants and 15 older adult hearing-impaired participants were tested in pairs. Each pair consisted of one young normal-hearing participant and one older hearing-impaired participant. Hearing-impaired participants received directional hearing aid amplification, according to their audiogram, via a master hearing aid with gain provided according to the NAL-NL2 fitting formula. Pairs of participants were required to take part in naturalistic conversations through the use of a referential communication task. Each pair took part in five conversations, each of 5-min duration. During each conversation, participants were exposed to one of five different realistic acoustic environments presented through highly open headphones. The ordering of acoustic environments across experimental blocks was pseudorandomized. Resulting recordings of conversational speech were analyzed to determine the magnitude of speech modifications, in terms of vocal level and spectrum, produced by normal-hearing talkers as a function of both acoustic environment and the degree of high-frequency average hearing impairment of their conversation partner. Results The magnitude of spectral modifications of speech produced by normal-hearing talkers during conversations with aided hearing-impaired interlocutors was smaller than the speech modifications observed during conversations between the same pairs of participants in the absence of hearing aid amplification. Conclusions The provision of hearing aid amplification reduces the effort required to maintain communication in adverse conditions. This reduction in effort provides benefit to hearing-impaired individuals and also to the conversation partners of hearing-impaired individuals. By considering the impact of amplification on both sides of dyadic conversations, this approach contributes to an increased understanding of the likely impact of hearing impairment on everyday communication.

Relationships Between Subjective Ratings and Objective Measures of Performance in Speechreading Sentences

1997 ◽  
Vol 40 (4) ◽  
pp. 900-911 ◽  
Author(s):  
Marilyn E. Demorest ◽  
Lynne E. Bernstein
Keyword(s):  
Hearing Impairment ◽  
Performance Evaluations ◽  
Objective Measures ◽  
Large Individual ◽  
Subjective Ratings ◽  
Objective Performance ◽  
Phonetic Distance ◽  
Stimulus Length ◽  
Measures Of Performance ◽  
Confidence Scale

Ninety-six participants with normal hearing and 63 with severe-to-profound hearing impairment viewed 100 CID Sentences (Davis & Silverman, 1970) and 100 B-E Sentences (Bernstein & Eberhardt, 1986b). Objective measures included words correct, phonemes correct, and visual-phonetic distance between the stimulus and response. Subjective ratings were made on a 7-point confidence scale. Magnitude of validity coefficients ranged from .34 to .76 across materials, measures, and groups. Participants with hearing impairment had higher levels of objective performance, higher subjective ratings, and higher validity coefficients, although there were large individual differences. Regression analyses revealed that subjective ratings are predictable from stimulus length, response length, and objective performance. The ability of speechreaders to make valid performance evaluations was interpreted in terms of contemporary word recognition models.

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