The role of the gross spectral shape as perceptual cues to place of articulation in stop consonants

1981 ◽  
Vol 70 (S1) ◽  
pp. S32-S32
Author(s):  
Sheila E. Blumstein ◽  
Ellyn Isaacs ◽  
John Mertus
Keyword(s):  
Spectral Shape ◽  
Stop Consonants ◽  
Perceptual Cues ◽  
Place Of Articulation

scholarly journals Infants Discriminate Voicing and Place of Articulation With Reduced Spectral and Temporal Modulation Cues

2015 ◽  
Vol 58 (3) ◽  
pp. 1033-1042 ◽  
Author(s):  
Laurianne Cabrera ◽  
Christian Lorenzi ◽  
Josiane Bertoncini
Keyword(s):  
Processing Condition ◽  
Stop Consonants ◽  
Temporal Modulation ◽  
Place Of Articulation ◽  
Phonetic Information ◽  
Young Infants ◽  
Speech Cues ◽  
Phonetic Contrasts ◽  
Visual Habituation

Purpose This study assessed the role of spectro-temporal modulation cues in the discrimination of 2 phonetic contrasts (voicing and place) for young infants. Method A visual-habituation procedure was used to assess the ability of French-learning 6-month-old infants with normal hearing to discriminate voiced versus unvoiced (/aba/-/apa/) and labial versus dental (/aba/-/ada/) stop consonants. The stimuli were processed by tone-excited vocoders to degrade frequency-modulation cues while preserving: (a) amplitude-modulation (AM) cues within 32 analysis frequency bands, (b) slow AM cues only (<16 Hz) within 32 bands, and (c) AM cues within 8 bands. Results Infants exhibited discrimination responses for both phonetic contrasts in each processing condition. However, when fast AM cues were degraded, infants required a longer exposure to vocoded stimuli to reach the habituation criterion. Conclusions Altogether, these results indicate that the processing of modulation cues conveying phonetic information on voicing and place is “functional” at 6 months. The data also suggest that the perceptual weight of fast AM speech cues may change during development.

Top-Down Processing and Visual Reorientation Illusions in a Virtual Reality Environment

2004 ◽  
Vol 63 (3) ◽  
pp. 143-149 ◽  
Author(s):  
Fred W. Mast ◽  
Charles M. Oman
Keyword(s):  
Virtual Reality ◽  
Visual Processing ◽  
Line Length ◽  
Perceptual Cues ◽  
Virtual Reality Environment ◽  
Top Down ◽  
Test Conditions ◽  
The Subject ◽  
Processing Mechanisms

The role of top-down processing on the horizontal-vertical line length illusion was examined by means of an ambiguous room with dual visual verticals. In one of the test conditions, the subjects were cued to one of the two verticals and were instructed to cognitively reassign the apparent vertical to the cued orientation. When they have mentally adjusted their perception, two lines in a plus sign configuration appeared and the subjects had to evaluate which line was longer. The results showed that the line length appeared longer when it was aligned with the direction of the vertical currently perceived by the subject. This study provides a demonstration that top-down processing influences lower level visual processing mechanisms. In another test condition, the subjects had all perceptual cues available and the influence was even stronger.

scholarly journals Initial laryngeal neutralisation in Tyrolean

Phonology ◽  
2018 ◽  
Vol 35 (1) ◽  
pp. 79-114 ◽  
Author(s):  
Alessandro Vietti ◽  
Birgit Alber ◽  
Barbara Vogt
Keyword(s):  
Acoustic Analysis ◽  
Initial Position ◽  
Final Position ◽  
Acoustic Cues ◽  
Acoustic Parameters ◽  
Place Of Articulation ◽  
Closure Duration

In the Southern Bavarian variety of Tyrolean, laryngeal contrasts undergo a typologically interesting process of neutralisation in word-initial position. We undertake an acoustic analysis of Tyrolean stops in word-initial, word-medial intersonorant and word-final contexts, as well as in obstruent clusters, investigating the role of the acoustic parameters VOT, prevoicing, closure duration and F0 and H1–H2* on following vowels in implementing contrast, if any. Results show that stops contrast word-medially via [voice] (supported by the acoustic cues of closure duration and F0), and are neutralised completely in word-final position and in obstruent clusters. Word-initially, neutralisation is subject to inter- and intraspeaker variability, and is sensitive to place of articulation. Aspiration plays no role in implementing laryngeal contrasts in Tyrolean.

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