Author: Myra Lynn HayesPublisher:
ISBN:
Category : Consonants
Languages : en
Pages : 128
Book Description
The Effect of Vowel Context on the Visual Perception of Consonants
Author: Myra Lynn HayesPublisher:
ISBN:
Category : Consonants
Languages : en
Pages : 128
Book Description
Effects of Time-varying Information on Vowel Identification Accuracy in Visual Speech Perception
Author: Deborah Anne YakelPublisher:
ISBN:
Category : Speech
Languages : en
Pages : 208
Book Description
The Effects of Phonetic Context on the Recognition of Consonants and Vowels
Author: James Wesley IrwinPublisher:
ISBN:
Category : Phonetics
Languages : en
Pages : 232
Book Description
Effects of Visibility and Context on the Visual Perception of the Revised Speech Perception in Noise (SPIN) Test
Author: Candace P. KendallThe Influence of Vowels on the Perception of Consonants
Author: Lucia Elisa Odilia Klaassen-DonPublisher:
ISBN:
Category : Consonants
Languages : en
Pages : 178
Book Description
Vowel Perception and Production
Author: B. S. RosnerPublisher: OUP Oxford
ISBN: 0191545597
Category : Computers
Languages : en
Pages : 444
Book Description
The last 50 years have witnessed a rapid growth in the understanding of the articulation and the acoustics of vowels. Contemporary theories of speech perception have concentrated on consonant perception, and this volume is intended as a balance to such bias. The authors propose a computational theory of auditory vowel perception, accounting for vowel identification in the face of acoustic differences between speakers and speaking rate and stress. This work lays the foundation for future experimental and computational studies of vowel perception.
The Influence of Color and Vowel Context on the Visual Perception of /p, B, M/
Author: Willard Charles HooksPublisher:
ISBN:
Category : Color
Languages : en
Pages : 370
Book Description
The Effect of Selective Narrow-Band Filtering on the Perception on Certain English Vowels
Author: William E. CastlePublisher: Walter de Gruyter GmbH & Co KG
ISBN: 3112318625
Category : Language Arts & Disciplines
Languages : en
Pages : 212
Book Description
No detailed description available for "The Effect of Selective Narrow-Band Filtering on the Perception on Certain English Vowels".
The Effects of Auditory-visual Vowel and Consonant Training on Speechreading Performance
Author: Carolyn RichiePublisher: Ann Arbor, Mich. : University Microfilms International
ISBN:
Category :
Languages : en
Pages : 380
Book Description
The Role of Context in Vowel Perception
Author: Peter F. AssmannPublisher:
ISBN:
Category : Phonetics
Languages : en
Pages : 0
Book Description
Vowel perception appears to be very robust: in the complete absence of any form of context vowels are recognized at a very high rate of identification (over 92 percent correct) - This result is the outcome of a series of experiments which were conducted to assess the role of speaker differences and consonantal context in vowel perception. Chapter one reviews previous studies which demonstrate a considerable amount of variability in vowel formant frequencies as a function of context. Since formant frequencies are generally believed to be the principal determinants of vowel quality differences, such variability may be expected to have an effect on perception- A number of hypotheses are discussed, and evidence for and against each * one is presented. In the second chapter, it is shown that labeling difficulties can have a profound effect on the outcome of vowel identification experiments, resulting in an over-estimation of the role of consonant context. Several solutions to this problem are suggested. Chapter three describes two experiments which assess the perceptual role of speaker and consonant context. The results of these experiments demonstrate that vowels in isolation are readily identified, and that the improvement afforded by context is rather minimal- It is proposed that vowels may contain additional information in the form of dynamic characteristics such as duration and diphthongization. Evidence for this view is presented in a study involving gated vowels, from which dynamic characteristics have been removed- Under such conditions identification errors increase and the role of speaker context is enhanced. Some possible implications of this finding for the perception of vowels in connected speech are discussed. Chapter four presents acoustic measurements and detailed phonetic transcriptions for the data used in the gated vowel study. The statistical procedure of linear discriminant analysis is adopted to determine whether the identification responses of listeners can be predicted on the basis of information provided by acoustic measuremeats. Two specific questions are addressed: first, are tokens whose formant frequencies have values which are shared by more than one vowel category misidentified by listeners? Secondly, are tokens whose formant frequencies are characteristic of a single vowel category more likely to be identified correctly? Under a speaker normalization hypothesis, vowel identification in the absence of speaker context (the "mixed" speaker condition) is determined primarily by the formant frequencies; when speaker context is available (the "blocked" speaker condition), adjustments are made for speaker differences. To test this hypothesis, perceptual data from the mixed and blocked speaker conditions were compared with the output of discriminant analyses of raw formant frequencies and speaker-normalized formant values. Significant correlations were obtained between the proportion of correct identifications of each vowel token and the probability of membership in the category intended (as determined by the classification algorithm of discriminant analysis). These findings indicate that vowel identification responses are closely related to formant frequencies. However, both raw and normalized formant values were more closely related to identification responses in the blocked than in the mixed condition. When speaker context is unavailable, formant values are not the only factors determining listeners* performance. Further experiments are needed to isolate these factors. Phoneticians* judgements of height and advancement showed highly significant correlations with log FI and log F2 values. A regression analysis indicated that the inclusion of speaker-dependent parameters significantly strengthens the relationship- Fundamental frequency and higher formants also make a significant contribution. These findings provide indirect support for the role of speaker information and vowel-internal cues in determining judgements of vowel quality. Chapter five summarizes the major findings and arrives at some conclusions concerning the perceptual significance of context. Further experiments are proposed to hypotheses which are suggested by these results.