Topic
Voice
About: Voice is a research topic. Over the lifetime, 2393 publications have been published within this topic receiving 56637 citations.
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TL;DR: By 5 years of age children produce words ending in stops with the same overall gestural organization as adults, however, some age-related differences were observed for jaw gestures, and variability for all measures was greater for children than for adults.
Abstract: The organization of gestures was examined in children’s and adults’ samples of consonant–vowel–stop words differing in stop voicing. Children (5 and 7 years old) and adults produced words from five voiceless/voiced pairs, five times each in isolation and in sentences. Acoustic measurements were made of vocalic duration, and of the first and second formants at syllable center and voicing offset. The predicted acoustic correlates of syllable-final voicing were observed across speakers: vocalic segments were shorter and first formants were higher in words with voiceless, rather than voiced, final stops. In addition, the second formant was found to differ depending on the voicing of the final stop for all speakers. It was concluded that by 5 years of age children produce words ending in stops with the same overall gestural organization as adults. However, some age-related differences were observed for jaw gestures, and variability for all measures was greater for children than for adults. These results suggest that children are still refining their organization of articulatory gestures past the age of 7 years. Finally, context effects (isolation or sentence) showed that the acoustic correlates of syllable-final voicing are attenuated when words are produced in sentences, rather than in isolation.
24 citations
TL;DR: Observed differences between children and adults in speech perception cannot be explained by differences in auditory perception, and it is concluded that listeners bring expectations to the listening task about the nature of the signals they are hearing based on their experiences with those signals.
Abstract: Purpose It has been reported that children and adults weight differently the various acoustic properties of the speech signal that support phonetic decisions. This finding is generally attributed t...
24 citations
TL;DR: The experimental results showed that the listeners' acceptable range of durational modification was narrower for vowels in the first moraic position in the word than for those in the third moraicPosition, and the acceptable range was also narrower for the vowel /a/ than for the vowels /i/, and similarly narrower for vows followed by unvoiced consonants than for Those followed by voiced consonants.
Abstract: Few perceptual studies of the temporal aspects of speech have investigated the influence of changes in segmental durations in terms of acceptability. Aiming to contribute to the assessment of rules for assigning segmental durations in speech synthesis, the current study measured the perceptual acceptability of changes in the segmental duration of vowels as a function of the segment attributes or context, such as base duration, temporal position in a word, vowel quality, and voicing of the following segment. Seven listeners estimated the acceptability of word stimuli in which one of the vowels was subjected to a temporal modification from -50 ms (for shortening) to +50 ms (for lengthening) in 5-ms steps. The temporal modification was applied to vowel segments in 70 word contexts; their durations ranged from 35-145 ms, the mora position in the word was first or third, the vowel quality was /a/ or /i/, and the following segment was a voiced or an unvoiced consonant. The experimental results showed that the listeners' acceptable range of durational modification was narrower for vowels in the first moraic position in the word than for those in the third moraic position. The acceptable range was also narrower for the vowel /a/ than for the vowel /i/, and similarly narrower for vowels followed by unvoiced consonants than for those followed by voiced consonants. The vowel that fell into the least vulnerable class (the third /i/, followed by a voiced consonant) required 140% of the modification of that which fell into the most vulnerable class (the first /a/, followed by an unvoiced consonant) to yield the same acceptability decrement. In contrast, the effect of the original vowel duration on the acceptability of temporal modifications was not significant despite its wide variation (35-145 ms).
24 citations
TL;DR: The authors examined whether or not stress is a factor in the likelihood of frication and devoicing of coda /b, d, [vvplosive]/ in Spanish dialects.
Abstract: In Spanish, /b, d, [vvplosive]/ are usually spirantized to voiced approximants in all syllabic contexts after a continuant sound. However, in North-Central Peninsular Spanish (NCS), spirantization interacts with coda devoicing, yielding voiceless fricatives. In the majority of cases, coda /b, d, [vvplosive]/ occur in stressed syllables. This work examines whether or not stress is a factor in the likelihood of frication and devoicing of coda /b, d, [vvplosive]/ in this dialect. An acoustic study was conducted of nine native speakers from NCS. These speakers were tested on nonce words with /b, d, [vvplosive]/ in coda position in both stressed and unstressed syllables. Measurements were made of vowel and consonant duration, presence and absence of frication and voicing, and voicing duration. The results show that frication is more likely in stressed syllables than in unstressed syllables. This suggests that in stressed syllables, a higher subglottal pressure produces higher airflow across the glottis, thereby favoring frication. In turn, frication inhibits voicing due to conflicting aerodynamic requirements between the two. We conclude that stress is a factor in spirantization and that it may indirectly affect the voicing properties of /b, d, [vvplosive]/.
24 citations
TL;DR: In this paper, the authors report the results of a cross-linguistic study comparing the nature of vowel-to-vowel coarticulation and the interaction between obstruent voicing and vowel height with the same languages.
Abstract: Much debate in recent years has focused on the relative contribution of analytic and channel biases in shaping the typology of sound. Moreton (2008) argues forcefully for the strength of analytic bias, such as Universal Grammar and other non-modality-specific cognitive biases that facilitate the learning of some phonological patterns and inhibit that of others, in creating typological asymmetries on its own, unassisted by the robustness of phonetic precursors. This article focuses on the assessment of phonetic precursor robustness. The main goal of this article is two-fold: (i) to establish the inadequacy of Moreton's method of evaluating relative phonetic precursor robustness and to offer an alternative to his approach; (ii) to report the results of a cross-linguistic study comparing the nature of vowel-to-vowel coarticulation and the interaction between obstruent voicing and vowel height with the same languages – no previous studies have directly compared these two phonetic precursors.
24 citations