The Experts below are selected from a list of 27 Experts worldwide ranked by ideXlab platform

Nathalie Vallée - One of the best experts on this subject based on the ideXlab platform.

  • IALP - Perception of the Vietnamese Short Vowels /??, ??, a/ in /bVk/ Produced by Female Voice
    2012 International Conference on Asian Language Processing, 2012
    Co-Authors: Tran Thi Anh Xuan, René Carré, Eric Castelli, Nathalie Vallée
    Abstract:

    Formant analysis in the case of Vietnamese /bVk/ (V is one of the short vowels /∂, c, a/) pronounced by female voice is a difficult task. The aim of the paper is to study, both in the speech signal and at the perception level, on the one hand, the effects of the impulse response at the beginning, at the end and during transitions of the signal and, on the other hand, the variations of the phases of the components. Results show that the effects of these parameters can be observed in spectrograms. The amplitudes of the spectral components are clearly sufficient for Perceptive Discrimination.

  • Perception of the Vietnamese Short Vowels /??, ??, a/ in /bVk/ Produced by Female Voice
    2012 International Conference on Asian Language Processing, 2012
    Co-Authors: Tran Thi Anh Xuan, René Carré, Eric Castelli, Nathalie Vallée
    Abstract:

    Formant analysis in the case of Vietnamese /bVk/ (V is one of the short vowels /∂̆, č, ă/) pronounced by female voice is a difficult task. The aim of the paper is to study, both in the speech signal and at the perception level, on the one hand, the effects of the impulse response at the beginning, at the end and during transitions of the signal and, on the other hand, the variations of the phases of the components. Results show that the effects of these parameters can be observed in spectrograms. The amplitudes of the spectral components are clearly sufficient for Perceptive Discrimination.

Tran Thi Anh Xuan - One of the best experts on this subject based on the ideXlab platform.

  • IALP - Perception of the Vietnamese Short Vowels /??, ??, a/ in /bVk/ Produced by Female Voice
    2012 International Conference on Asian Language Processing, 2012
    Co-Authors: Tran Thi Anh Xuan, René Carré, Eric Castelli, Nathalie Vallée
    Abstract:

    Formant analysis in the case of Vietnamese /bVk/ (V is one of the short vowels /∂, c, a/) pronounced by female voice is a difficult task. The aim of the paper is to study, both in the speech signal and at the perception level, on the one hand, the effects of the impulse response at the beginning, at the end and during transitions of the signal and, on the other hand, the variations of the phases of the components. Results show that the effects of these parameters can be observed in spectrograms. The amplitudes of the spectral components are clearly sufficient for Perceptive Discrimination.

  • Perception of the Vietnamese Short Vowels /??, ??, a/ in /bVk/ Produced by Female Voice
    2012 International Conference on Asian Language Processing, 2012
    Co-Authors: Tran Thi Anh Xuan, René Carré, Eric Castelli, Nathalie Vallée
    Abstract:

    Formant analysis in the case of Vietnamese /bVk/ (V is one of the short vowels /∂̆, č, ă/) pronounced by female voice is a difficult task. The aim of the paper is to study, both in the speech signal and at the perception level, on the one hand, the effects of the impulse response at the beginning, at the end and during transitions of the signal and, on the other hand, the variations of the phases of the components. Results show that the effects of these parameters can be observed in spectrograms. The amplitudes of the spectral components are clearly sufficient for Perceptive Discrimination.

René Carré - One of the best experts on this subject based on the ideXlab platform.

  • IALP - Perception of the Vietnamese Short Vowels /??, ??, a/ in /bVk/ Produced by Female Voice
    2012 International Conference on Asian Language Processing, 2012
    Co-Authors: Tran Thi Anh Xuan, René Carré, Eric Castelli, Nathalie Vallée
    Abstract:

    Formant analysis in the case of Vietnamese /bVk/ (V is one of the short vowels /∂, c, a/) pronounced by female voice is a difficult task. The aim of the paper is to study, both in the speech signal and at the perception level, on the one hand, the effects of the impulse response at the beginning, at the end and during transitions of the signal and, on the other hand, the variations of the phases of the components. Results show that the effects of these parameters can be observed in spectrograms. The amplitudes of the spectral components are clearly sufficient for Perceptive Discrimination.

  • Perception of the Vietnamese Short Vowels /??, ??, a/ in /bVk/ Produced by Female Voice
    2012 International Conference on Asian Language Processing, 2012
    Co-Authors: Tran Thi Anh Xuan, René Carré, Eric Castelli, Nathalie Vallée
    Abstract:

    Formant analysis in the case of Vietnamese /bVk/ (V is one of the short vowels /∂̆, č, ă/) pronounced by female voice is a difficult task. The aim of the paper is to study, both in the speech signal and at the perception level, on the one hand, the effects of the impulse response at the beginning, at the end and during transitions of the signal and, on the other hand, the variations of the phases of the components. Results show that the effects of these parameters can be observed in spectrograms. The amplitudes of the spectral components are clearly sufficient for Perceptive Discrimination.

Eric Castelli - One of the best experts on this subject based on the ideXlab platform.

  • IALP - Perception of the Vietnamese Short Vowels /??, ??, a/ in /bVk/ Produced by Female Voice
    2012 International Conference on Asian Language Processing, 2012
    Co-Authors: Tran Thi Anh Xuan, René Carré, Eric Castelli, Nathalie Vallée
    Abstract:

    Formant analysis in the case of Vietnamese /bVk/ (V is one of the short vowels /∂, c, a/) pronounced by female voice is a difficult task. The aim of the paper is to study, both in the speech signal and at the perception level, on the one hand, the effects of the impulse response at the beginning, at the end and during transitions of the signal and, on the other hand, the variations of the phases of the components. Results show that the effects of these parameters can be observed in spectrograms. The amplitudes of the spectral components are clearly sufficient for Perceptive Discrimination.

  • Perception of the Vietnamese Short Vowels /??, ??, a/ in /bVk/ Produced by Female Voice
    2012 International Conference on Asian Language Processing, 2012
    Co-Authors: Tran Thi Anh Xuan, René Carré, Eric Castelli, Nathalie Vallée
    Abstract:

    Formant analysis in the case of Vietnamese /bVk/ (V is one of the short vowels /∂̆, č, ă/) pronounced by female voice is a difficult task. The aim of the paper is to study, both in the speech signal and at the perception level, on the one hand, the effects of the impulse response at the beginning, at the end and during transitions of the signal and, on the other hand, the variations of the phases of the components. Results show that the effects of these parameters can be observed in spectrograms. The amplitudes of the spectral components are clearly sufficient for Perceptive Discrimination.

Christian Raphel - One of the best experts on this subject based on the ideXlab platform.

  • effects of fluid ingestion on cognitive function after heat stress or exercise induced dehydration
    International Journal of Psychophysiology, 2001
    Co-Authors: Corinne Cian, Pierre-alain Barraud, B. Melin, Christian Raphel
    Abstract:

    Abstract This study investigated the effects of heat exposure, exercise-induced dehydration and fluid ingestion on cognitive performance. Seven healthy men, unacclimatized to heat, were kept euhydrated or were dehydrated by controlled passive exposure to heat (H, two sessions) or by treadmill exercise (E, two sessions) up to a weight loss of 2.8%. On completion of a 1-h recovery period, the subjects drank a solution containing 50 g l −1 glucose and 1.34 g l −1 NaCl in a volume of water corresponding to 100% of his body weight loss induced by dehydration. (H1 and E1) or levels of fluid deficit were maintained (H0, E0). In the E0, H0 and control conditions, the subject drank a solution containing the same quantity of glucose diluted in 100 ml of water. Psychological tests were administered 30 min after the dehydration phase and 2 h after fluid ingestion. Both dehydration conditions impaired cognitive abilities (i.e. Perceptive Discrimination, short-term memory), as well as subjective estimates of fatigue, without any relevant differences between the methods. By 3.5 h after fluid deficit, dehydration (H0 and E0) no longer had any adverse effect, although the subjects felt increasingly tired. Thus, there was no beneficial effect of fluid ingestion (H1 and E1) on the cognitive variables. However, long-term memory retrieval was impaired in both control and dehydration situations, whereas there was no decrement in performance in the fluid ingestion condition (H1, E1).

  • Influence of Variations in Body Hydration on Cognitive Function
    Journal of Psychophysiology, 2000
    Co-Authors: Corinne Cian, Nathalie Koulmann, Pierre-alain Barraud, Christian Raphel, C. Jimenez, B. Melin
    Abstract:

    Abstract Eight healthy men, unacclimated to heat, were submitted to variations in body hydration. The subjects were kept euhydrated, dehydrated by controlled passive hyperthermia or exercise on a treadmill up to a weight loss of 2.8%, or hyperhydrated using a solution containing glycerol, with a total ingested volume equal to 21.4 ml/kg of body weight. On completion of a 90-min recovery period, the subjects were assigned a pedaling exercise on an arm-crank ergometer. Psychological tests were administered 30 min after the phase of hydration variation and 15 min after the arm crank exercise. Both dehydration conditions impaired cognitive abilities (i.e., Perceptive Discrimination, psycho-motor skills, and short-term memory) as well as subjective estimates of fatigue, without any relevant differences between them. Short-term memory was significantly greater following hyperhydration when compared to euhydration (P < .05). Following arm crank exercise, further effects of dehydration were found for tracking per...