Download or read book Approximations non lin aires pour l analyse des signaux sonores written by Rémi Gribonval and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: La classification de signaux en grande dimension nécessite la sélection d'un petit nombre de caractéristiques pour représenter chaque signal. Les approximations non-linéaires donnent des représentations concises, en s'adaptant à la structure de chaque signal analysé. Leur emploi est prometteur. La première partie de ce travail définit des représentations adaptatives rapides de signaux comme combinaison linéaire d'atomes extraits d'un dictionnaire. À partir de l'algorithme de matching pursuit, nous proposons plusieurs méthodes itératives pour extraire les structures caractéristiques des signaux sonores. Le matching pursuit harmonique décompose un signal en composantes harmoniques élémentaires. Le matching pursuit chirpe extrait les variations de fréquence instantanée. Il tire parti d'une analyse fine des ridges du dictionnaire de gabor multi-échelle. Les approximations fournies par le matching pursuit haute-résolution préservent les transitoires, en imposant des contraintes de résolution temporelle. Nous accélérons ces techniques en employant des sous-dictionnaires de maxima locaux. Dans un second temps on étudie l'analyse discriminante non-linéaire. Pour classifier des signaux, les méthodes d'analyse discriminante linéaire réduisent la dimension en les projetant sur un sous-espace prédéterminé. Une projection adaptative, en fonction du signal analyse, extrait de celui-ci des caractéristiques qui lui sont propres. Elles le distinguent et permettent de le classifier efficacement. Nous déterminons la stratégie optimale de projection adaptative pour la classification de bruits gaussiens colorés. Afin de classifier des transitoires, nous explorons enfin une méthode utilisant les maxima du module de la transformée en ondelettes et des arbres de décision. Cette approche permet de surmonter les difficultés liées à l'invariance par translation des signaux à classifier.

Download or read book APPROXIMATIONS NON LINEAIRES POUR L ANALYSE DES SIGNAUX SONORES written by REMI.. GRIBONVAL and published by . This book was released on 1999 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt: LA CLASSIFICATION DE SIGNAUX EN GRANDE DIMENSION NECESSITE LA SELECTION D'UN PETIT NOMBRE DE CARACTERISTIQUES POUR REPRESENTER CHAQUE SIGNAL. LES APPROXIMATIONS NON-LINEAIRES DONNENT DES REPRESENTATIONS CONCISES, EN S'ADAPTANT A LA STRUCTURE DE CHAQUE SIGNAL ANALYSE. LEUR EMPLOI EST PROMETTEUR. LA PREMIERE PARTIE DE CE TRAVAIL DEFINIT DES REPRESENTATIONS ADAPTATIVES RAPIDES DE SIGNAUX COMME COMBINAISON LINEAIRE D'ATOMES EXTRAITS D'UN DICTIONNAIRE. A PARTIR DE L'ALGORITHME DE MATCHING PURSUIT, NOUS PROPOSONS PLUSIEURS METHODES ITERATIVES POUR EXTRAIRE LES STRUCTURES CARACTERISTIQUES DES SIGNAUX SONORES. LE MATCHING PURSUIT HARMONIQUE DECOMPOSE UN SIGNAL EN COMPOSANTES HARMONIQUES ELEMENTAIRES. LE MATCHING PURSUIT CHIRPE EXTRAIT LES VARIATIONS DE FREQUENCE INSTANTANEE. IL TIRE PARTI D'UNE ANALYSE FINE DES RIDGES DU DICTIONNAIRE DE GABOR MULTI-ECHELLE. LES APPROXIMATIONS FOURNIES PAR LE MATCHING PURSUIT HAUTE-RESOLUTION PRESERVENT LES TRANSITOIRES, EN IMPOSANT DES CONTRAINTES DE RESOLUTION TEMPORELLE. NOUS ACCELERONS CES TECHNIQUES EN EMPLOYANT DES SOUS-DICTIONNAIRES DE MAXIMA LOCAUX. DANS UN SECOND TEMPS ON ETUDIE L'ANALYSE DISCRIMINANTE NON-LINEAIRE. POUR CLASSIFIER DES SIGNAUX, LES METHODES D'ANALYSE DISCRIMINANTE LINEAIRE REDUISENT LA DIMENSION EN LES PROJETANT SUR UN SOUS-ESPACE PRE-DETERMINE. UNE PROJECTION ADAPTATIVE, EN FONCTION DU SIGNAL ANALYSE, EXTRAIT DE CELUI-CI DES CARACTERISTIQUES QUI LUI SONT PROPRES. ELLES LE DISTINGUENT ET PERMETTENT DE LE CLASSIFIER EFFICACEMENT. NOUS DETERMINONS LA STRATEGIE OPTIMALE DE PROJECTION ADAPTATIVE POUR LA CLASSIFICATION DE BRUITS GAUSSIENS COLORES. AFIN DE CLASSIFIER DES TRANSITOIRES, NOUS EXPLORONS ENFIN UNE METHODE UTILISANT LES MAXIMA DU MODULE DE LA TRANSFORMEE EN ONDELETTES ET DES ARBRES DE DECISION. CETTE APPROCHE PERMET DE SURMONTER LES DIFFICULTES LIEES A L'INVARIANCE PAR TRANSLATION DES SIGNAUX A CLASSIFIER.

Download or read book Approximations non lineaires pour l analyse des signaux sonores written by Rémi Gribonval and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Impressionism Reflections and Perceptions written by Meyer Schapiro and published by George Braziller Publishers. This book was released on 1997 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents a revision of the late Columbia University art historian's lectures given at Indiana University in 1961.

Download or read book Historical journey in a linguistic archipelago written by Émilie Aussant and published by BoD – Books on Demand. This book was released on 2020-12-14 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume offers a selection of papers presented during the 14th International Conference on the History of the Language Sciences (ICHoLS XIV, Paris, 2017). Part I brings together studies dealing with descriptive concepts. First examined is the notion of “accidens” in Latin grammar and its Greek counterparts. Other papers address questions with a strong echo in today’s linguistics: localism and its revival in recent semantics and syntax, the origin of the term “polysemy” and its adoption through Bréal, and the difficulties attending the description of prefabs, idioms and other “fixed expressions”. This first part also includes studies dealing with representations of linguistic phenomena, whether these concern the treatment of local varieties (so-called patois) in French research, or the import and epistemological function of spatial representations in descriptions of linguistic time. Or again, now taking the word “representation” literally, the visual display of grammatical relations, in the form of the first syntactic diagrams. Part II presents case studies which involve wider concerns, of a social nature: the “from below” approach to the history of Chinese Pidgin English underlines the social roles of speakers and the diversity of speech situations, while the scrutiny of Lhomond’s Latin and French textbooks demonstrates the interplay of pedagogical practice, cross-linguistic comparison and descriptive innovation. An overview of early descriptions of Central Australian languages reveals a whole spectrum of humanist to positivist and antihumanist stances during the colonial age. An overarching framework is also at play in the anthropological perspective championed by Meillet, whose socially and culturally oriented semantics is shown to live on in Benveniste. The volume ends with a paper on Trần Đức Thảo, whose work is an original synthesis between phenomenology and Marxist semiology, wielded against the “idealistic” doctrine of Saussure.

Download or read book The Continental Shelf written by M. W. Mouton and published by Springer. This book was released on 2013-11-22 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Word and Language written by Roman Jakobson and published by Walter de Gruyter. This book was released on 2010-12-14 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Belief Functions Theory and Applications written by Sébastien Destercke and published by Springer. This book was released on 2018-09-07 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 5th International Conference on Belief Functions, BELIEF 2018, held in Compiègne, France, in September 2018.The 33 revised regular papers presented in this book were carefully selected and reviewed from 73 submissions. The papers were solicited on theoretical aspects (including for example statistical inference, mathematical foundations, continuous belief functions) as well as on applications in various areas including classification, statistics, data fusion, network analysis and intelligent vehicles.

Download or read book The Large Sieve written by Klaus Friedrich Roth and published by . This book was released on 1969 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ubiquitous Music written by Damián Keller and published by Springer. This book was released on 2014-11-27 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first monograph dedicated to this interdisciplinary research area, combining the views of music, computer science, education, creativity studies, psychology, and engineering. The contributions include introductions to ubiquitous music research, featuring theory, applications, and technological development, and descriptions of permanent community initiatives such as virtual forums, multi-institutional research projects, and collaborative publications. The book will be of value to researchers and educators in all domains engaged with creativity, computing, music, and digital arts.

Download or read book Dictionary of Building and Civil Engineering written by Don Montague and published by Taylor & Francis. This book was released on 1996 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dual-language dictionary lists over 20,000 specialist terms in both French and English, covering architecture, building, engineering and property terms. It meets the needs of all building professionals working on projects overseas. It has been comprehensively researched and compiled to provide an invaluable reference source in an increasingly European marketplace.

Download or read book Elements of Criticism Vol 1 Classic Reprint written by Henry Home Kames and published by Forgotten Books. This book was released on 2016-12-04 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Elements of Criticism, Vol. 1 After the utmolt efforts, we find it beyond Our power to conceive the avour ofa rofc to erdi in the mind: we are neceffarily led to conceive that pleafure as exilling in the nol'crils along With the imprefiion made by the rofo Upon that organ. And the fame will be the refult of ex periments with refpec't to every feeling of talie, touch, anddfmell. Touch affords the moft fatisfaetory Ccri ments. Were it not that the delufion is deteeted by phi lofophy, no perfon would hefitate to pronounce, that the pleafure arifing from touching a fmooth, foft, and velvet furface, has its exifience at the ends of the fingers, with. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works."

Download or read book Rave Culture and Religion written by Graham St John and published by Routledge. This book was released on 2004-06 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vast numbers of western youth have attached primary significance to raving and post-rave experiences. This collection of essays explores the socio-cultural and religious dimensions of the rave, 'raving' and rave-derived phenomena.

Download or read book The Theory of Unitary Group Representations written by George Whitelaw Mackey and published by . This book was released on 1955 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soundscape Assessment written by Östen Axelsson and published by Frontiers Media SA. This book was released on 2020-01-13 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Notebooks written by Paul Valéry and published by Peter Lang Gmbh, Internationaler Verlag Der Wissenschaften. This book was released on 2000 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Cahiers/Notebooks of Paul Valéry are a unique form of writing. They reveal Valéry as one of the most radical and creative minds of the twentieth century, encompassing a wide range of investigation into all spheres of human activity. His work explores the arts, the sciences, philosophy, history and politics, investigating linguistic, psychological and social issues, all linked to the central questions, relentlessly posed: 'what is the human mind and how does it work?', 'what is the potential of thought and what are its limits?' But we encounter here too, Valéry the writer: exploratory, fragmentary texts undermine the boundaries between analysis and creativity, between theory and practice. Neither journal nor diary, eluding the traditional genres of writing, the Notebooks offer lyrical passages, writing of extreme beauty, prose poems of extraordinary descriptive power alongside theoretical considerations of poetics, ironic aphorisms and the most abstract kind of analysis. The concerns and the insights that occupied Valéry's inner voyages over more than 50 years remain as relevant as ever for the contemporary reader: for the Self that is his principal subject is at once singular and universal.

Download or read book UNESCO General History of Africa Vol I Abridged Edition written by Jacqueline Ki-Zerbo and published by Univ of California Press. This book was released on 1990 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This volume covers the period from the end of the Neolithic era to the beginning of the seventh century of our era. This lengthy period includes the civilization of Ancient Egypt, the history of Nubia, Ethiopia, North Africa and the Sahara, as well as of the other regions of the continent and its islands."--Publisher's description