Vocal‐Tract Characteristics of Voiced and Voiceless Stop Consonants

1969 ◽  
Vol 46 (1A) ◽  
pp. 96-96
Author(s):  
Raymond Kent ◽  
Kenneth L. Moll
Keyword(s):  
Vocal Tract ◽  
Stop Consonants ◽  
Voiceless Stop

Phonetic feature size in second language acquisition: Examining VOT in voiceless and voiced stops

2021 ◽  
pp. 026765832110089
Author(s):  
Daniel J Olson
Keyword(s):  
Second Language ◽  
Second Language Acquisition ◽  
Voice Onset Time ◽  
Onset Time ◽  
Stop Consonant ◽  
Acoustic Similarity ◽  
Stop Consonants ◽  
Voiceless Stop ◽  
English Speaking ◽  
Underlying Mechanisms

Featural approaches to second language phonetic acquisition posit that the development of new phonetic norms relies on sub-phonemic features, expressed through a constellation of articulatory gestures and their corresponding acoustic cues, which may be shared across multiple phonemes. Within featural approaches, largely supported by research in speech perception, debate remains as to the fundamental scope or ‘size’ of featural units. The current study examines potential featural relationships between voiceless and voiced stop consonants, as expressed through the voice onset time cue. Native English-speaking learners of Spanish received targeted training on Spanish voiceless stop consonant production through a visual feedback paradigm. Analysis focused on the change in voice onset time, for both voiceless (i.e. trained) and voiced (i.e. non-trained) phonemes, across the pretest, posttest, and delayed posttest. The results demonstrated a significant improvement (i.e. reduction) in voice onset time for voiceless stops, which were subject to the training paradigm. In contrast, there was no significant change in the non-trained voiced stop consonants. These results suggest a limited featural relationship, with independent voice onset time (VOT) cues for voiceless and voices phonemes. Possible underlying mechanisms that limit feature generalization in second language (L2) phonetic production, including gestural considerations and acoustic similarity, are discussed.

scholarly journals Air Pressure Responses to Sudden Vocal Tract Pressure Bleeds During Production of Stop Consonants

2004 ◽  
Vol 47 (4) ◽  
pp. 784-801 ◽  
Author(s):  
David J. Zajac ◽  
Mark C. Weissler
Keyword(s):  
Vocal Tract ◽  
Linear Trend ◽  
Upper Airway ◽  
Air Pressure ◽  
Stop Consonants ◽  
Oral Pressure ◽  
The Face ◽  
Computer Controlled ◽  
Linear Manner ◽  
Respiratory Reflexes

Two studies were conducted to evaluate short-latency vocal tract air pressure responses to sudden pressure bleeds during production of voiceless bilabial stop consonants. It was hypothesized that the occurrence of respiratory reflexes would be indicated by distinct patterns of responses as a function of bleed magnitude. In Study 1, 19 adults produced syllable trains of /pʌ/ using a mouthpiece coupled to a computer-controlled perturbator. The device randomly created bleed apertures that ranged from 0 to 40 mm 2 during production of the 2nd or 4th syllable of an utterance. Although peak oral air pressure dropped in a linear manner across bleed apertures, it averaged 2 to 3 cm H 2 O at the largest bleed. While slope of oral pressure also decreased in a linear trend, duration of the oral pressure pulse remained relatively constant. The patterns suggest that respiratory reflexes, if present, have little effect on oral air pressure levels. In Study 2, both oral and subglottal air pressure responses were monitored in 2 adults while bleed apertures of 20 and 40 mm 2 were randomly created. For 1 participant, peak oral air pressure dropped across bleed apertures, as in Study 1. Subglottal air pressure and slope, however, remained relatively stable. These patterns provide some support for the occurrence of respiratory reflexes to regulate subglottal air pressure. Overall, the studies indicate that the inherent physiologic processes of the respiratory system, which may involve reflexes, and passive aeromechanical resistance of the upper airway are capable of developing oral air pressure in the face of substantial pressure bleeds. Implications for understanding speech production and the characteristics of individuals with velopharyngeal dysfunction are discussed. KEY WORDS: stop consonants, oral air pressure, subglottal air pressure, respiratory reflexes, velopharyngeal dysfunction

Timing differences in articulation between voiced and voiceless stop consonants: an analysis of cine-MRI data

2013 ◽  
Author(s):  
Masako Fujimoto ◽  
Tatsuya Kitamura ◽  
Hiroaki Hatano ◽  
Ichiro Fujimoto
Keyword(s):  
Cine Mri ◽  
Stop Consonants ◽  
Voiceless Stop

Aerodynamic Interactions Associated with Voiced-Voiceless Stop Consonants

1979 ◽  
Vol 31 (1) ◽  
pp. 82-88 ◽  
Author(s):  
Thomas Murry ◽  
William S. Brown, jr.
Keyword(s):  
Stop Consonants ◽  
Voiceless Stop

scholarly journals Knowledge‐based recognition of voiceless stop consonants

1983 ◽  
Vol 73 (S1) ◽  
pp. S102-S102
Author(s):  
Gary E. Kopec ◽  
Marcia A. Bush
Keyword(s):  
Stop Consonants ◽  
Knowledge Based ◽  
Voiceless Stop
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