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A dimension reduction technique applied to regression on high dimension, low sample size neurophysiological data sets
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In: ISSN: 1471-2202 ; EISSN: 1471-2202 ; BMC Neuroscience ; https://hal.univ-grenoble-alpes.fr/hal-03374818 ; BMC Neuroscience, BioMed Central, 2021, 22 (1), ⟨10.1186/s12868-020-00605-0⟩ (2021)
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| 2 |
A dimension reduction technique applied to regression on high dimension, low sample size neurophysiological data sets
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In: BMC Neurosci (2021)
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Influence of higher order propagation acoustic modes on speech directivity
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In: ICSV 2015 - 22nd International Congress on Sound and Vibration ; https://hal.archives-ouvertes.fr/hal-01179394 ; ICSV 2015 - 22nd International Congress on Sound and Vibration, Jul 2015, Florence, Italy (2015)
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Abstract:
International audience ; The acoustic of the vocal tract is often described with a plane wave assumption. In other words,it is assumed that only one dimensional acoustic waves propagate and are radiated from the vocaltract at the mouth. If this assumption is satisfying at low frequency, higher order acoustical modescan propagate above their cut-on frequency. According to the typical dimensions of the vocaltract this frequency can be estimated to lie in the range 4-5 kHz which corresponds not only to themiddle of the speech frequency range but also to the region of maximum sensitivity of the humanear. We first present experimental and numerical examples of the acoustic properties performedon simplified and realistic vocal tract shapes showing that these modes can indeed strongly affectthe pressure field above the cut-on frequency. As a consequence a strong directivity of the radiatedsound, which cannot be predicted by plane wave theory, can be expected. The influence of thehigher order modes on speech directivity is then investigated through experimental measurementsand simulations performed on simplified vocal tract replicas. The radiated pressure field is mea-sured inside an insulated room using a microphone and is compared with the expectations derivedfrom multimodal theory. It is shown that the influence on the directivity can be considerable. Theconsequences of these findings in terms of speech perception and speech synthesis are discussedand illustrated.
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Keyword:
[SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph]; directivity; higer-order modes; speech; waveguide
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URL: https://hal.archives-ouvertes.fr/hal-01179394
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Human vocal tract growth: A longitudinal study of the development of various anatomical structures
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In: Proceedings of Interspeech ; Interspeech 2015 - 16th Annual Conference of the International Speech Communication Association ; https://hal.archives-ouvertes.fr/hal-01200990 ; Interspeech 2015 - 16th Annual Conference of the International Speech Communication Association, International Speech Communication Association, Sep 2015, Dresden, Germany (2015)
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Bimodal Perception within the natural time-course of speech production
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In: Audiovisual Speech Processing ; https://hal.archives-ouvertes.fr/hal-00821829 ; Bailly G., Perrier P. & Vatikiotis-Bateson E. Audiovisual Speech Processing, Cambridge University Press, pp.121-158, 2012, 9781107006829 (2012)
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Le babillage et le développement des compétences articulatoires : indices temporels et moteurs
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In: ISSN: 1244-5460 ; Faits de langues ; https://hal.univ-lyon2.fr/hal-01963131 ; Faits de langues, Brill, 2011 (2011)
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Impedance Control and Its Relation to Precision in Orofacial Movement
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The emergence of Tongue/Jaw movements’ dissociation: A cue for articulatory control development
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In: Speech and Face to Face Communication Workshop ; https://hal.univ-lyon2.fr/hal-01972146 ; Speech and Face to Face Communication Workshop, Oct 2008, Grenoble, France (2008)
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Finger-jaw coordination during a deictic gesture with CVCV utterances: the effect of stress position
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In: 7th International Seminar on Speech Production ; https://hal.archives-ouvertes.fr/hal-00157982 ; 7th International Seminar on Speech Production, Dec 2006, Ubatuba, Brazil. pp.193-200 (2006)
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SPECIES: an evolutionary model for the emergence of phonetic structures in an artificial society of speech agents
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In: 5th European Conference on Artificial Life - ECAl'99 ; https://hal.inria.fr/inria-00098952 ; 5th European Conference on Artificial Life - ECAl'99, 1999, Lausanne, Suisse, pp.674-678 (1999)
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