scholarly journals Identification of synthetic speech stimuli by hearing‐impaired subjects

1978 ◽  
Vol 64 (S1) ◽  
pp. S52-S52 ◽  
Author(s):  
Akira Yokkaichi ◽  
Hiroya Fujisaki
Keyword(s):  
Hearing Impaired ◽  
Synthetic Speech ◽  
Speech Stimuli

Dissimilarity Ratings of English Consonants by Normally-Hearing and Hearing-Impaired Individuals

1979 ◽  
Vol 22 (2) ◽  
pp. 236-246 ◽  
Author(s):  
Jeffrey L. Danhauer ◽  
Ruth M. Lawarre
Keyword(s):  
Normal Hearing ◽  
Hearing Impaired ◽  
Interval Scale ◽  
Individual Group ◽  
Speech Stimuli ◽  
Paired Stimuli ◽  
Loudness Level ◽  
Comfortable Loudness

Perceptual patterns in rating dissimilarities among 24 CVs were investigated for a group of normal-hearing and two groups of hearing-impaired subjects (one group with flat, and one group with sloping, sensorineural losses). Stimuli were presented binaurally at most comfortable loudness level and subjects rated the 576 paired stimuli on a 1–7 equal-appearing interval scale. Ratings were submitted to individual group and combined INDSCAL analyses to describe features used by the subjects in their perception of the speech stimuli. Results revealed features such as sibilant, sonorant, plosive and place. Furthermore, normal and hearing-impaired subjects used similar features, and subjects' weightings of features were relatively independent of their audiometric configurations. Results are compared to those of previous studies.

scholarly journals Recognition of Synthetic Speech by Hearing-Impaired Elderly Listeners

1991 ◽  
Vol 34 (5) ◽  
pp. 1180-1184 ◽  
Author(s):  
Larry E. Humes ◽  
Kathleen J. Nelson ◽  
David B. Pisoni
Keyword(s):  
Hearing Loss ◽  
Speech Recognition ◽  
Recognition Performance ◽  
The Elderly ◽  
Hearing Impaired ◽  
The Other ◽  
Natural Speech ◽  
Synthetic Speech ◽  
Closed Set ◽  
Open Set

The Modified Rhyme Test (MRT), recorded using natural speech and two forms of synthetic speech, DECtalk and Votrax, was used to measure both open-set and closed-set speech-recognition performance. Performance of hearing-impaired elderly listeners was compared to two groups of young normal-hearing adults, one listening in quiet, and the other listening in a background of spectrally shaped noise designed to simulate the peripheral hearing loss of the elderly. Votrax synthetic speech yielded significant decrements in speech recognition compared to either natural or DECtalk synthetic speech for all three subject groups. There were no differences in performance between natural speech and DECtalk speech for the elderly hearing-impaired listeners or the young listeners with simulated hearing loss. The normal-hearing young adults listening in quiet out-performed both of the other groups, but there were no differences in performance between the young listeners with simulated hearing loss and the elderly hearing-impaired listeners. When the closed-set identification of synthetic speech was compared to its open-set recognition, the hearing-impaired elderly gained as much from the reduction in stimulus/response uncertainty as the two younger groups. Finally, among the elderly hearing-impaired listeners, speech-recognition performance was correlated negatively with hearing sensitivity, but scores were correlated positively among the different talker conditions. Those listeners with the greatest hearing loss had the most difficulty understanding speech and those having the most trouble understanding natural speech also had the greatest difficulty with synthetic speech.

Can native Japanese listeners learn to differentiate /r–l/ on the basis of F3 onset frequency?

2011 ◽  
Vol 15 (2) ◽  
pp. 255-274 ◽  
Author(s):  
ERIN M. INGVALSON ◽  
LORI L. HOLT ◽  
JAMES L. McCLELLAND
Keyword(s):  
Category Membership ◽  
Forced Choice ◽  
Synthetic Speech ◽  
Reliable Indicator ◽  
Training Effect ◽  
Training Task ◽  
Speech Stimuli ◽  
Final Performance ◽  
The Third

Many attempts have been made to teach native Japanese listeners to perceptually differentiate English /r–l/ (e.g.rock–lock). Though improvement is evident, in no case is final performance native English-like. We focused our training on the third formant onset frequency, shown to be the most reliable indicator of /r–l/ category membership. We first presented listeners with instances of synthetic /r–l/ stimuli varying only in F3 onset frequency, in a forced-choice identification training task with feedback. Evidence of learning was limited. The second experiment utilized an adaptive paradigm beginning with non-speech stimuli consisting only of /r/ and /l/ F3 frequency trajectories progressing to synthetic speech instances of /ra–la/; half of the trainees received feedback. Improvement was shown by some listeners, suggesting some enhancement of /r–l/ identification is possible following training with only F3 onset frequency. However, only a subset of these listeners showed signs of generalization of the training effect beyond the trained synthetic context.

Auditory Perceptual Impairments in Children with Specific Language Disorders

1981 ◽  
Vol 46 (1) ◽  
pp. 3-9 ◽  
Author(s):  
Nancy Lubert
Keyword(s):  
Experimental Studies ◽  
Language Disorders ◽  
Synthetic Speech ◽  
Future Research ◽  
Acoustic Features ◽  
Consistent Finding ◽  
Speech Stimuli ◽  
Perceptual Judgments ◽  
Clinical Observations ◽  
Perceptual Impairment

This article reviews the literature on auditory perceptual impairments in children with language disorders. It is suggested that, rather than a higher-order cognitive or "linguistic" deficit, the underlying deficit in childhood language disorders is a perceptual one. The perceptual impairment may consist of a deficiency in detecting acoustic features in the speech wave that normally cue certain phonemes. Support for this hypothesis comes from clinical observations and experimental studies of aphasic adults as well as language-disordered children. The most consistent finding of the studies with language-disordered children has been that they have difficulty making perceptual judgments of the order of rapid sequences of brief sounds, such as synthetic speech and non-speech stimuli. However, these children perceive the sequences more accurately if the duration of the stimuli or the inter-stimulus intervals are extended. This suggests a "rate-specific" auditory perceptual deficit in language-disordered children for rapid acoustic information, such as the distinctive acoustic features of speech sounds. Treatment and future research implications are discussed.

Short-Term Habituation of the Infant Auditory Evoked Response

1973 ◽  
Vol 16 (4) ◽  
pp. 637-641 ◽  
Author(s):  
Michael F. Dorman ◽  
Robert Hoffmann
Keyword(s):  
Evoked Response ◽  
Synthetic Speech ◽  
Evoked Responses ◽  
Stimulus Amplitude ◽  
Average Amplitude ◽  
Short Term ◽  
Speech Stimuli ◽  
Auditory Evoked Response ◽  
Stimulus Train

Short-term habituation of the vertex auditory evoked response was studied in six infants (age 10 to 14 weeks). The infants were presented trains of four synthetic speech stimuli. The average amplitude of the evoked responses was largest to the first member of the stimulus train and then decreased rapidly. The average amplitudes to the second, third, and fourth stimuli in the train were 36, 41, and 22% of the first stimulus amplitude, respectively. The results suggest that the auditory evoked response of awake infants satisfies several of the criteria for short-term habituation.

Synthetic speech stimuli spectrally normalized for nonhuman cochlear dimensions

2002 ◽  
Vol 3 (1) ◽  
pp. 41-46 ◽  
Author(s):  
Michael Kiefte ◽  
Keith R. Kluender ◽  
William S. Rhode
Keyword(s):  
Synthetic Speech ◽  
Speech Stimuli

Electrophysiological responses of hearing‐impaired subjects to speech stimuli

1981 ◽  
Vol 70 (S1) ◽  
pp. S71-S71
Author(s):  
Samuel B. Polen ◽  
R. Patrick Greenwood ◽  
Carol Yoneda
Keyword(s):  
Hearing Impaired ◽  
Speech Stimuli ◽  
Electrophysiological Responses

Ability to perceive non‐native contrasts with natural and synthetic speech stimuli

1998 ◽  
Vol 104 (3) ◽  
pp. 1835-1835
Author(s):  
Peter C. Gordon ◽  
Lisa Keyes ◽  
Yiu‐Fai Yung
Keyword(s):  
Synthetic Speech ◽  
Speech Stimuli ◽  
Natural And Synthetic
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