On pushing the voice‐onset‐time (VOT) boundary about

1975 ◽  
Vol 57 (S1) ◽  
pp. S50-S50
Author(s):  
Leig Lisker ◽  
Alvin M. Liberman ◽  
David Dechowitz ◽  
Donna M. Erickson
Keyword(s):  
Voice Onset Time ◽  
Onset Time ◽  
The Voice

Variation in Voice Onset Time for Korean Stops

2006 ◽  
Vol 13 ◽  
pp. 1-16 ◽  
Author(s):  
David J. Silva
Keyword(s):  
United States ◽  
Native Speakers ◽  
Voice Onset Time ◽  
Onset Time ◽  
The United States ◽  
Age Group ◽  
Acoustic Data ◽  
Diachronic Change ◽  
Phonemic Level ◽  
The Voice

Abstract. Acoustic data elicited from 34 native speakers of Korean living in the United States pro-vide evidence for diachronic change in the voice onset time (VOT) of phrase-initial aspirated and lax stop phonemes. While older speakers produce aspirated and lax stops with clearly differentiated average VOT values, many younger speakers appear to have neutralized this difference, producing VOTs for aspirated stops that are substantially shorter than those of older speakers, and comparable to those for corresponding lax stops. The data further indicate that, within each age group, older speakers manifest sex-based differences in VOT while younger speakers do not. Despite this appar-ent shift in VOT values, the acoustic evidence suggests that all speakers in this study, regardless of age, continue to mark underlying differences between aspirated and lax stops in terms of stop closure and the fundamental frequency of the following vowel. It is concluded that the data point to a recent phonetic shift in the language, whereby VOT no longer serves as the primary cue to differentiate between lax and aspirated stops. There is not, however, evidence of any reorganization of the lan-guage as the phonemic level: the language's underlying lax ~ aspirated ~ tense contrasts endure.

scholarly journals Comparison of plosive sounds in monolingual and bilingual children, using the voice onset time acoustic parameter: cases report

Revista CEFAC ◽  
2018 ◽  
Vol 20 (5) ◽  
pp. 680-687
Author(s):  
Maria Teresa R. Lofredo-Bonatto ◽  
Marta A. Andrada e Silva
Keyword(s):  
Voice Onset Time ◽  
Onset Time ◽  
Acoustic Signals ◽  
Brazilian Portuguese ◽  
Acoustic Parameter ◽  
Bilingual Children ◽  
The Voice

ABSTRACT The purpose was to compare differences in production of plosive phonemes through the voice onset time (VOT) measurement in the speech of monolingual children, speakers of Brazilian Portuguese and bilingual children, speakers of both Brazilian Portuguese and English. The sample consisted of three monolingual children and three bilingual children; average age was 7 years. A speech emission was recorded for the investigation, which had the following vehicle phrase: “Diga ‘papa’ baixinho” (“Say ‘papa’ quietly”). Papa was then replaced by “baba”, “tata”, “dada”, “caca” and “gaga”. The measurements of the acoustic signals were performed through broadband spectrograms, and VOT was descriptively analyzed for the non-voiced sounds [p, t, k] and voiced [b, d, g] plosive sounds. Monolingual children presented higher average VOT values for [p, t, k] compared to bilingual children. For the [b, d, g] sounds, monolingual children had lower average VOT values, as compared to bilingual children. It was concluded that in the comparison of VOT measures of the speech samples, the monolingual children of Brazilian Portuguese presented higher values for the non voiced ones and lower for the voiced ones in relation to the bilingual children speakers of Brazilian Portuguese and English.

Speakers' Sex Differences in Voice Onset Time: Some Preliminary Findings

1997 ◽  
Vol 85 (2) ◽  
pp. 459-463E ◽  
Author(s):  
Sandra P. Whiteside ◽  
Caroline J. Irving
Keyword(s):  
Sex Differences ◽  
Voice Onset Time ◽  
Onset Time ◽  
The Voice

This study presents a brief investigation into sex differences of speakers in the voice onset time of English plosives that are stressed in both word-initial and prevocalic position. 72 short phrases were presented to 5 men (range 25 to 37 years, mean age 34.2 yr.) and five women speakers (range 28 to 38 years, mean 32.6 yr.). Analysis showed that the women as speakers had on average, longer voice onset time values than their male peers.

Speakers' Sex Differences in Voice Onset Time: A Study of Isolated Word Production

1998 ◽  
Vol 86 (2) ◽  
pp. 651-654 ◽  
Author(s):  
S. P. Whiteside ◽  
C. J. Irving
Keyword(s):  
Sex Differences ◽  
Voice Onset Time ◽  
Onset Time ◽  
Word Production ◽  
Isolated Word ◽  
Age Range ◽  
The Voice

This report presents a brief study into sex differences of speakers in the voice onset time of English plosives that are stressed in both word-initial and pre-vocalic positions. 36 isolated words were spoken by 5 men (age range 25 to 37 yr., M: 34.2 yr.) and 5 women speakers (age range 28 to 38 yr., M: 32.6 yr.) who were subjects. Analysis showed that the women speakers had on the average relative to the men, longer voice onset time values for voiceless plosives and shorter voice onset time values for the voiced plosives.

scholarly journals Evaluation on Reading Ability for Developmental Dyslexia Using Measurement of the Voice Onset Time for Single Hiragana Character

2007 ◽  
Vol 43 (3) ◽  
pp. 166-171 ◽  
Author(s):  
Kentaro KOTANI ◽  
Tatsuya SHIMANO ◽  
Mitsuru KASHIWAGI ◽  
Ryusaku HASHIMOTO ◽  
Sunao IWAKI ◽  
...  
Keyword(s):  
Developmental Dyslexia ◽  
Reading Ability ◽  
Voice Onset Time ◽  
Onset Time ◽  
The Voice

scholarly journals Evaluation of Analytical Modeling Functions for the Phonation Onset Process

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Simon Petermann ◽  
Stefan Kniesburges ◽  
Anke Ziethe ◽  
Anne Schützenberger ◽  
Michael Döllinger
Keyword(s):  
High Speed ◽  
Voice Onset Time ◽  
Onset Time ◽  
Vocal Folds ◽  
Endoscopic Imaging ◽  
Human Voice ◽  
Analytical Functions ◽  
Analytical Approaches ◽  
The Voice ◽  
Healthy Females

The human voice originates from oscillations of the vocal folds in the larynx. The duration of the voice onset (VO), called the voice onset time (VOT), is currently under investigation as a clinical indicator for correct laryngeal functionality. Different analytical approaches for computing the VOT based on endoscopic imaging were compared to determine the most reliable method to quantify automatically the transient vocal fold oscillations during VO. Transnasal endoscopic imaging in combination with a high-speed camera (8000 fps) was applied to visualize the phonation onset process. Two different definitions of VO interval were investigated. Six analytical functions were tested that approximate the envelope of the filtered or unfiltered glottal area waveform (GAW) during phonation onset. A total of 126 recordings from nine healthy males and 210 recordings from 15 healthy females were evaluated. Three criteria were analyzed to determine the most appropriate computation approach: (1) reliability of the fit function for a correct approximation of VO; (2) consistency represented by the standard deviation of VOT; and (3) accuracy of the approximation of VO. The results suggest the computation of VOT by a fourth-order polynomial approximation in the interval between 32.2 and 67.8% of the saturation amplitude of the filtered GAW.

Productive Voice Onset Time Characteristics of Esophageal Speech

1978 ◽  
Vol 21 (1) ◽  
pp. 56-62 ◽  
Author(s):  
John M. Christensen ◽  
Bernd Weinberg ◽  
Peter J. Alfonso
Keyword(s):  
Voice Onset Time ◽  
Speech Sound ◽  
Onset Time ◽  
Stop Consonant ◽  
Current Understanding ◽  
Place Of Articulation ◽  
Esophageal Speech ◽  
Phonological Contrasts ◽  
The Voice ◽  
Group Comparisons

The voice onset times (VOT) of a large number of stop-consonant initiated syllables produced by esophageal and normal speakers were measured. Esophageal speakers systematically varied VOT during the production of speech-sound categories with the same manner of production. Average voice onset times associated with the production of prevocalic voiceless stops of esophageal speakers were significantly shorter than those of normal speakers, while talker-group comparisons associated with the production of voiced prevocalic stops were nonsignificant. Voice onset times of both esophageal and normal speakers were differentially sensitive to place of articulation. Findings are discussed in terms of furthering current understanding of how effectively esophageal speakers achieve important phonological contrasts.

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