scholarly journals Predicting hearing‐impaired listeners’ use of acoustic cues for consonant recognition

1994 ◽  
Vol 95 (5) ◽  
pp. 3010-3010
Author(s):  
Linda Kozma‐Spytek ◽  
Peggy B. Nelson ◽  
Sally G. Revoile ◽  
Lisa Holden‐Pitt
Keyword(s):  
Hearing Impaired ◽  
Acoustic Cues ◽  
Consonant Recognition

Second Formant Transitions of Selected Consonant-Vowel Combinations in the Speech of Deaf and Normal-Hearing Children

1976 ◽  
Vol 19 (2) ◽  
pp. 279-289 ◽  
Author(s):  
Randall B. Monsen
Keyword(s):  
Speech Intelligibility ◽  
Normal Subjects ◽  
Normal Hearing ◽  
Hearing Impaired ◽  
Acoustic Cues ◽  
Target Frequency ◽  
Second Formant ◽  
Hearing Children

Although it is well known that the speech produced by the deaf is generally of low intelligibility, the sources of this low speech intelligibility have generally been ascribed either to aberrant articulation of phonemes or inappropriate prosody. This study was designed to determine to what extent a nonsegmental aspect of speech, formant transitions, may differ in the speech of the deaf and of the normal hearing. The initial second formant transitions of the vowels /i/ and /u/ after labial and alveolar consonants (/b, d, f/) were compared in the speech of six normal-hearing and six hearing-impaired adolescents. In the speech of the hearing-impaired subjects, the second formant transitions may be reduced both in time and in frequency. At its onset, the second formant may be nearer to its eventual target frequency than in the speech of the normal subjects. Since formant transitions are important acoustic cues for the adjacent consonants, reduced F 2 transitions may be an important factor in the low intelligibility of the speech of the deaf.

scholarly journals Consonant recognition loss in hearing impaired listeners

2009 ◽  
Vol 126 (5) ◽  
pp. 2683-2694 ◽  
Author(s):  
Sandeep A. Phatak ◽  
Yang-soo Yoon ◽  
David M. Gooler ◽  
Jont B. Allen
Keyword(s):  
Hearing Impaired ◽  
Consonant Recognition

Consonant–vowel intensity ratios for maximizing consonant recognition by hearing-impaired listeners

1998 ◽  
Vol 103 (2) ◽  
pp. 1098-1114 ◽  
Author(s):  
Elizabeth Kennedy ◽  
Harry Levitt ◽  
Arlene C. Neuman ◽  
Mark Weiss
Keyword(s):  
Hearing Impaired ◽  
Consonant Recognition ◽  
Intensity Ratios

Predicting Audiovisual Consonant Recognition Performance of Hearing-Impaired Adults

1974 ◽  
Vol 17 (2) ◽  
pp. 270-278 ◽  
Author(s):  
Brian E. Walden ◽  
Robert A. Prosek ◽  
Don W. Worthington
Keyword(s):  
Predictive Value ◽  
Visual Cues ◽  
Visual Recognition ◽  
Recognition Performance ◽  
Hearing Impaired ◽  
Speech Discrimination ◽  
Information Analysis ◽  
Wide Range ◽  
Consonant Recognition ◽  
Recognition Ability

The redundancy between the auditory and visual recognition of consonants was studied in 100 hearing-impaired subjects who demonstrated a wide range of speech-discrimination abilities. Twenty English consonants, recorded in CV combination with the vowel /a/, were presented to the subjects for auditory, visual, and audiovisual identification. There was relatively little variation among subjects in the visual recognition of consonants. A measure of the expected degree of redundancy between an observer’s auditory and visual confusions among consonants was used in an effort to predict audiovisual consonant recognition ability. This redundancy measure was based on an information analysis of an observer’s auditory confusions among consonants and expressed the degree to which his auditory confusions fell within categories of visually homophenous consonants. The measure was found to have moderate predictive value in estimating an observer’s audiovisual consonant recognition score. These results suggest that the degree of redundancy between an observer’s auditory and visual confusions of speech elements is a determinant in the benefit that visual cues offer to that observer.

Some Effects of Training on Speech Recognition by Hearing-Impaired Adults

1981 ◽  
Vol 24 (2) ◽  
pp. 207-216 ◽  
Author(s):  
Brian E. Walden ◽  
Sue A. Erdman ◽  
Allen A. Montgomery ◽  
Daniel M. Schwartz ◽  
Robert A. Prosek
Keyword(s):  
Speech Recognition ◽  
Recognition Test ◽  
Recognition Performance ◽  
Rehabilitation Program ◽  
Hearing Impaired ◽  
Aural Rehabilitation ◽  
Sentence Recognition ◽  
Consonant Recognition ◽  
The Individual

The purpose of this research was to determine some of the effects of consonant recognition training on the speech recognition performance of hearing-impaired adults. Two groups of ten subjects each received seven hours of either auditory or visual consonant recognition training, in addition to a standard two-week, group-oriented, inpatient aural rehabilitation program. A third group of fifteen subjects received the standard two-week program, but no supplementary individual consonant recognition training. An audiovisual sentence recognition test, as well as tests of auditory and visual consonant recognition, were administered both before and ibltowing training. Subjects in all three groups significantly increased in their audiovisual sentence recognition performance, but subjects receiving the individual consonant recognition training improved significantly more than subjects receiving only the standard two-week program. A significant increase in consonant recognition performance was observed in the two groups receiving the auditory or visual consonant recognition training. The data are discussed from varying statistical and clinical perspectives.

Auditory-Visual Perception of Speech with Reduced Optical Clarity

1979 ◽  
Vol 22 (2) ◽  
pp. 212-223 ◽  
Author(s):  
Norman P. Erber
Keyword(s):  
Auditory Perception ◽  
Hearing Impaired ◽  
Auditory Training ◽  
Optical Distortion ◽  
Acoustic Cues ◽  
Sensation Level ◽  
Training Technique ◽  
Children Speech ◽  
Acoustic Domain ◽  
Impaired Children

Optical cues for visual and auditory-visual (A-V) perception of speech were varied by placing a sheet of rough-surfaced Plexiglas between talker and lipreader and systematically changing the distance between Plexiglas and talker. This distorts the optical environment in a way that is analogous to masking or filtering in the acoustic domain. In studies with normal-hearing adults and with hearing-impaired children, speech (words, sentences) was presented live under different degrees of optical distortion, and observers attempted to identify the stimuli. Visual-alone (lipreading) scores dropped abruptly to the chance level as Plexiglas distance (blurring) was increased. A-V scores were relatively high for clear conditions but diminished gradually as Plexiglas distance (blurring) was increased. Under extremely poor optical conditions, A-V scores reached a plateau. This represents essentially auditory perception without meaningful optical cues for speech. Results parallel those of previous acoustic studies that compared auditory with A-V perception of speech as a function of S/N ratio or sensation level, demonstrating a reciprocal aspect of optical and acoustic cues for speech perception. Optical distortion seems to have potential as an auditory training technique to shift attention of hearing-impaired observers to non-dominant acoustic cues during A-V perception of speech.

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