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Academic literature on the topic 'Perception auditive – Modèles mathématiques'
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Journal articles on the topic "Perception auditive – Modèles mathématiques"
Gignoux-Ezratty, Véronique. "Déconfiner la perception scientifique en france." Acta Europeana Systemica 10 (December 9, 2020): 19–32. http://dx.doi.org/10.14428/aes.v10i0.59573.
Full textDissertations / Theses on the topic "Perception auditive – Modèles mathématiques"
Khalidov, Vasil. "Modèles de mélanges conjugués pour la modélisation de la perception visuelle et auditive." Grenoble, 2010. http://www.theses.fr/2010GRENM064.
Full textIn this thesis, the modelling of audio-visual perception with a head-like device is considered. The related problems, namely audio-visual calibration, audio-visual object detection, localization and tracking are addressed. A spatio-temporal approach to the head-like device calibration is proposed based on probabilistic multimodal trajectory matching. The formalism of conjugate mixture models is introduced along with a family of efficient optimization algorithms to perform multimodal clustering. One instance of this algorithm family, namely the conjugate expectation maximization (ConjEM) algorithm is further improved to gain attractive theoretical properties. The multimodal object detection and object number estimation methods are developed, their theoretical properties are discussed. Finally, the proposed multimodal clustering method is combined with the object detection and object number estimation strategies and known tracking techniques to perform multimodal multiobject tracking. The performance is demonstrated on simulated data and the database of realistic audio-visual scenarios (CAVA database)
Caramiaux, Baptiste. "Etudes sur la relation geste-son en performance musicale." Paris 6, 2011. http://www.theses.fr/2011PA066461.
Full textBruckert, Laetitia. "Production et perception de la voix : entre données phylogénétiques et modèles socio-culturels." Paris 10, 2006. http://www.theses.fr/2006PA100077.
Full textThe present thesis focuses on voice production and perception. We used male voices. Theses are the main results: - Consensus on the voice hedonistic judgment and on the inferences regarding the speaker can be noted. Theses appear whatever the linguistic nature of the vocal production listened, even while listening to a simple series of vowels. - The listeners prove themselves able to infer correctly the speakers' age but not height, as they mistakenly use non-reliable acoustic indications such as pitch. - There is no gender effect on the judgments : both male and female listeners seem to produce the same judgments. - A vocal corpus effect on the judgments produced while listening to voices can be observed, principally opposing the vowels to the other corpora. -It generally turns out that male and female speakers use mainly voice prosodic information and not the spectral aspects such as pitch and the voice tone
Dugué, Pierre. "Vers un modèle de la chaîne auditive humaine dans le traitement de l’enveloppe temporelle." Rennes 1, 2008. http://www.theses.fr/2008REN1S024.
Full textThis work is aimed at studying the auditory perception of sound temporal envelope, i. E. The amplitude fluctuations whose frequency is lower than about fifty Hertz, this envelope being closely related to speech intelligibility. A physiological model of the temporal envelope processing is proposed. It is composed of two parts : the first one, from the outer ear to the inferior colliculus, generates unitary responses and the second one, from the medial geniculate body to the primary auditory cortex, neural populations responses. In addition to indices frequently used in the literature, two new indices are proposed and validated. Responses to amplitude modulation measured in the main processing centres of the temporal envelope, particularly in the human primary auditory cortex, are effectively reproduced in terms of modulation transfer functions
Bezerra, Silvio José. "Un modèle de perception visuelle pour la vision artificielle." Paris 6, 1993. http://www.theses.fr/1993PA066026.
Full textFarkhatdinov, Ildar. "Modeling verticality estimation during locomotion." Paris 6, 2013. http://www.theses.fr/2013PA066085.
Full textA nonlinear model of the vestibular system is proposed. The model was constructed from general considerations regarding the Newton-Euler dynamics governing the three-dimensional movements of bodies constrained to oscillate in non-inertial frames, such as the otoliths, which were modeled as spherical damped pendula. Two configurations were considered. The medial model considered only one inner ear located in the center of a head. The lateral model considered two inner ears located laterally with respect to the center of rotation of the head. An observability test was used to verify whether the reconstruction of the head orientation with respect to the gravitational vertical was possible from otoliths measurements only. It could be shown that in order for the head vertical orientation to be observable, the head had to be stabilized during locomotion. It was shown that the gravitoinertial ambiguity could be resolved if the head was horizontally stabilized. The results were applied to solve the head vertical orientation estimation problem. The simulations indicated that the estimation errors were smaller and the observers converged faster when head was stabilized during locomotion, leading to a nonlinear, combined observation-control system that could be stabilized with respect to the gravitational vertical. The results were tested with an experimental setup that comprised an actuated gimbal mechanism to represent the head-neck system and a liquid-based inclinometer that represented the otoliths organs. The findings derived from this research would be helpful for analyzing spatial perception in humans, and for improving the perceptual capabilities of robotic systems
Moffat, Graeme. "Etudes des acouphènes chez l'homme et dans des modèles animaux : corrélats électrophysiologiques chez l'animal éveillé : rôle des prothèses auditives dans le traitement des acouphènes chez l'homme." Aix-Marseille 1, 2010. http://www.theses.fr/2010AIX11007.
Full textTinnitus, the perception of sound in the absence of any stimulus, is a chronic problem for tens of millions of individuals worldwide, and no treatments have yet shown a high degree of eficacy in all cases. The development of effective treatments is therefore imperative and requires both an understanding of the physiologcal basis of tinnitus and of the effectiveness and limits of different treatment strategies. Given a well-established relationship between tinnitus and hearing impairment, and a consensus among physiological models of tinnitus as to the important role of deafferentation (reduced input) in the auditory system, treatment strategies that attempt to restore input to the central auditory system via suprathreshold acoustic stimulation should be effective in altering or alleviating this disorder. In collaboration with laboratories in Lyon and Marseille, France, I tested the effectiveness of two acoustic treatment protocols designed to alleviate tinnitus. Ln a first experiment, patients suffering from tinnitus were fitted for one of two hearing aid amplification regimes: standard clinical amplification, which is known to alleviate tinnitus in some cases, and high-bandwidth amplification, which the neurophysiological model of tinnitus predicts should be more effective than the clinical standard. L found that tinnitus sensation was affected by standard amplification but not by high-bandwidth, suggesting an unforeseen technical or physiological limit on the efficacy of this treatment strategy. Consideration must therefore be given to the influence of cochlear dead regions and sensitive periods, or lack thereof, in auditory neural plasticity. In a second series of experiments, my collaborators and I looked for neural correlates of tinnitus in an awake aninal model, which has not been done previously using multiple tinnitus induction strategies. Animals were subjected to a Zwicker Tone-inducing stimulus, a high dose of sodium salicylate, and an acute noise trauma, all of which are known to induce a phantom auditory percept over different time scales. We found no neural correlate of the Zwicker Tone phenomenon, but did note both an increase in evoked potential amplitude (in audiory cortex local field potentials) and a decrease over a broad band in the EEG power spectrum between 10-30 Hz after both salicylate and nobe trauma adminmration. Moreover, we found a generalized decrease in entropy in EEG under salicylate administration. These results suggest that an important experimental tinnitus model, salicylate administration, may not be completely analogous to the effects of noise trauma, in that important central changes independent of auditory effects may exert an influence. Taken together, these experiments suggest important gaps in the neurophysiological model of tinnitus, notably that though tinnitus induction may not necessarily depend on peripheral deafferentation (as in salicylate administration), its sustained presence is likely in most cases dependent upon peripheral or sensorineural damage at a level close to the cochlea, and that cases of peripheral (cochlear) damage may present an insurmountable limit to the effetiveness of acoustic therapies. Further implications and consideration of other treatment strategies is discussed
Leiba, Raphaël. "Conception d'un outil de diagnostic de la gêne sonore en milieu urbain." Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066602/document.
Full textNoise, especially road traffic noise, is cited by many studies as a source of major societal concern. So far, public responses are based only on energy quantification of sound exposure, often by measuring or estimating LA or Lden, and sound-level reduction related decision are taken. Nevertheless, psychoacoustic studies have shown that the sound level explains only a small part of the perceived noise annoyance. It is interesting to have more information about the source of noise and not to reduce the information to its sound level. In this thesis a tool is proposed for estimating the noise annoyance induced by each road vehicle using its audio signal and noise annoyance models. To do so, the audio signal of the vehicle is isolated by using inverse methods, large microphones arrays and image processing to obtain its trajectory. The knowledge of the trajectory and of the signal allows the vehicle to be classified by a machine learning method according to Morel et al. taxonomy. Once its category obtained, the specific annoyance of the vehicle is estimated thanks to a noise annoyance model using psychoacoustic and energetic indices. This allows the estimation of specific noise annoyance for each vehicle within the road traffic. The application of this method is made during a measurement day on a large Parisian artery
Follet, Brice. "Etude sur la dichotomie ambiant-focal du comportement oculomoteur dans la perception des scènes naturelles." Paris 8, 2012. http://octaviana.fr/document/178646946#?c=0&m=0&s=0&cv=0.
Full textThis work relies on the question of existence of two kinds of visual named ambient and focal. Document begins to present previous work at behavioral, physiological, oculometric and computational levels. Next, we expose our experimental approach and the obtained results. All experimental methodologies rely on oculomotor data with the aim to study ambient and focal aspects. We approach this problem in suggesting an automatic method to discriminate the two kinds of fixations contrary to previous studies. In a first step, this fixation clustering allows to reveal one relevant behavioral index to discriminate fixations. In a subsequent step, we observe that two kinds of fixations show distinct features on the spatial deployment in the visual scene. In a next step, we investigate the respective role of ambient and focal fixations in the perception across two different paradigms. Hypothesis suggesting focal fixations are specialized in a local perception of object and ambient fixations preferentially treat the global scene are validated. In a next step, we try to consider ambient and focal fixations to increase the ability of a saliency model to predict spatial deployment of fixations. The last step suggests a functional temporal synthesis and a global schema of ocular behavior
Gueguen, Robin. "Virtualisation architecturale visuelle et auditive du théâtre antique d'Orange." Thesis, Sorbonne université, 2018. http://www.theses.fr/2018SORUS163.
Full textThis multidisciplinary project initiated by Sorbonne University aims to provide mathematical and computing solutions to archaeological problems. It deals with the ancient theater of Orange. An extensive literature review allowed to restore this monument thanks to the software Blender. In addition to the visualization part, this project also aims to study the acoustics of the monument. Thus, a numerical simulation tool especially designed for this significant size numerical problems has been developed in C++ in partenership with the CMAP (École polytechnique). The algorithm uses geometric methods thanks to the high frequency approximation. From a sound source, beams carrying a certain amount of energy are propagated in all directions and reflected on the building walls. The method provide the reverberation curve of a room for eight octave bands by considering the materials properties and the propagation medium. The algorithm is optimized by using a Divide and Conquer approach with a hierarchical octree structure. This allow to reduce the quadratic complexity of the ray/element interactions to near-linear and significantly improves computation time. The algorithm is validated by comparison with theoretical test cases. The study of the Orange theater is eventually carried out with this acoustic simulator. Thanks to different output data, it is possible to qualify the acoustic impact of certain theater configurations : presence of ornament or roof, position of spectators or sound sources
Books on the topic "Perception auditive – Modèles mathématiques"
Petitot, Jean. Neurogéométrie de la vision: Modèles mathématiques et physiques des architectures fonctionnelles. [Palaiseau]: Les Éditions de l'École Polytechnique, 2008.
Find full textEindhoven), Working Models of Human Perception (1987. Working models of human perception. London: Academic, 1989.
Find full textBlake, Andrew. Visual reconstruction. Cambridge, Mass: MIT, 1987.
Find full textG, Elsendoorn Ben A., Bouma Herman, and Workshop "Working Models of Human Perception" (1987 : Institute for Perception Research, Eindhoven), eds. Working models of human perception. London: Academic Press, 1989.
Find full text(Editor), Svetlana N. Yanuschkevich, Patrick S. P. Wang (Editor), Marina L. Gavrilova (Editor), Sargur N. Srihari (Editor), and Mark S. Nixon (Editor), eds. Image Pattern Recognition: Synthesis and Analysis in Biometrics (Series in Machine Perception & Artifical Intelligence) (Series in Machine Perception & Artifical Intelligence). World Scientific Publishing Company, 2007.
Find full textDavid, Klahr, Langley Pat, and Neches Robert, eds. Production system models of learning and development. Cambridge, Mass: MIT Press, 1987.
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