Accor: Instrumentation and Database for the Cross-Language Study of Coarticulation

Marchal, Alain; Hardcastle, William J.

doi:10.1177/002383099303600302

Cited by 15 publications

(10 citation statements)

References 29 publications

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“…Our data were extracted from the EUR-ACCOR multichannel database (Marchal and Hardcastle, 1993). The corpus consisted of one repetition of a set of ten French sentences (see Appendix).…”

Section: Methodsmentioning

confidence: 99%

Modeling tongue-palate contact patterns in the production of speech

Nguyen

Marchal

1996

Journal of Phonetics

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Previous studies on lingual movements in speech have led to the assumption that the tongue can be divided into a small number of functional blocks. This work was aimed at nding out whether such a subdivision into independent components may also be observed in patterns of tongue-palate contacts, as revealed by electropalatography (EPG). An attempt was made to reduce EPG data to a small number of articulatorily relevant parameters in an empirical way, and to model the con guration of the linguo-palatal contacts in speech as a combination of these parameters. Our corpus was composed of ten natural sentences recorded by two female native speakers of French. EPG data reduction was performed by means of a feedforward multilayer neural network on the one hand, and of a factor analysis on the other hand.The results showed that variations in the tongue-palate contact pattern mainly occurred along two dimensions, related to lingual contacts in 1) the alveolar region and 2) the palatal region, respectively. These results were consistent for both subjects, and provided evidence for the hypothesis that the tongue tip/blade and the tongue dorsum are two independently controllable articulators. In a second step, potential applications of this empirical model to studies of coarticulation and timing are illustrated, through a pilot investigation of /kl/ clusters. Finally, implications of our work for a comprehensive model of tongue movements are discussed. Nguyen et al.Modeling tongue-palate contact patterns 2

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“…Our data were extracted from the EUR-ACCOR multichannel database (Marchal and Hardcastle, 1993). The corpus consisted of one repetition of a set of ten French sentences (see Appendix).…”

Section: Methodsmentioning

confidence: 99%

Modeling tongue-palate contact patterns in the production of speech

Nguyen

Marchal

1996

Journal of Phonetics

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“…Speech material was extracted from the EUR-ACCOR database (Marchal and Hardcastle, 1993). The fricative targets included in the study were phonologically/phonetically classified as alveolar articulations.…”

Section: Speech Materialsmentioning

confidence: 99%

Tongue-Palate Contact Timing during /s/ and /z/ in English

Liker

Gibbon²

2018

Phonetica

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Although numerous studies have investigated supraglottal strategies for signalling voicing in fricatives, there is still no agreement about the precise characteristics of tongue-to-palate contact timing during voiced as opposed to voiceless fricatives. In this study we use electropalatography (EPG) to investigate articulatory and coarticulatory characteristics of tongue-to-palate contact timing during /s/ and /z/ in English. Five typically speaking participants, speakers of Southern British English, produced 500 trochaic words containing the intervocalic alveolar fricatives /s/ or /z/. The time between the start of the frication and the maximum contact at the place of articulation was expressed as a percentage of each fricative's total duration (time to target, TT).This measure was used to analyse articulatory and coarticulatory timing during /s/ and /z/. Data for absolute timing were also presented. The results showed that the time between the start of the frication and the maximum contact point was longer for /s/ than for /z/. This difference was consistent across speakers but was not significant for all of them. The results of the coarticulatory effects showed that the influence of vowel context on TT values for /s/ and /z/ did not differ significantly, but there was a tendency for /z/ to be more resistant to coarticulation effects than /s/.

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“…The data were obtained from the ACCOR database (Marchal and Hardcastle, 1993). This database, designed for the cross-language study of coarticulation, contains electropalatographic and acoustic measurements (among other measurements) for utterances in different European languages and varying speech styles (slow, fast, etc.).…”

Section: Real-world Problem: Prediction Of Plp Coefficients and Epg Pmentioning

confidence: 99%

One-to-many mappings, continuity constraints and latent variable models

Carreira-Perpiñán¹

1999

IEE Colloquium on Applied Statistical Pattern Recognition

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We approach the problem of multivariate regression using latent variable models, which infer a low-dimensional representation of an observed, high-dimensional process. Defining functional relationships between variables may be conveniently done by picking informative points from the corresponding conditional distribution. However, this is problematic when this conditional distribution is multimodal, since there are in principle multiple candidates for the representative point, i.e., the mapping is one-to-many. We show, both with a toy example and with real-world data-the acousticto-articulatory mapping problem-that: 1) the modes of the conditional distribution contain information to potentially invert many-to-one as well as one-to-one mappings; 2) this information may be successfully used if some extra information is available, in particular continuity constraints for sequential data, for which we introduce a quantitative measure. We sketch algorithms for mode-finding in Gaussian mixtures and for performing smooth multivariate regression.

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Accor: Instrumentation and Database for the Cross-Language Study of Coarticulation

Cited by 15 publications

References 29 publications

Modeling tongue-palate contact patterns in the production of speech

Modeling tongue-palate contact patterns in the production of speech

Tongue-Palate Contact Timing during /s/ and /z/ in English

One-to-many mappings, continuity constraints and latent variable models

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