F Nous contacter


0

Post-edited Mathematical and numerical aspects of frame theory - Part 1

Auteurs : Feichtinger, Hans G. (Auteur de la Conférence)
CIRM (Editeur )

Loading the player...
spectrogram from STx program by ARI short-time Fourier transform GeoGebra biorthogonal system fast Fourier transform matrix multiplication null space of a matrix projection on the null space scalar product transpose matrix Gram matrix orthogonal projection rank of a matrix four subspaces row rank / column rank normal equation singular value decomposition pseudo inverse matrix polynomials on the unit circle Frobenius norm of a matrix Löwdin orthogonalization polar decomposition Vandermonde matrix Gauss function

Résumé : Motivated by the spectrogram (or short-time Fourier transform) basic principles of linear algebra are explained, preparing for the more general case of Gabor frames in time-frequency analysis. The importance of the singular value decomposition and the four spaces associated with a matrix is pointed out, and based on this the pseudo-inverse (leading later to the dual Gabor frame) and the Loewdin (symmetric) orthogonalization are explained.

Codes MSC :
15-XX - Linear and multilinear algebra; matrix theory
41-XX - Approximations and expansions [For all approximation theory in the complex domain, see 30E05 and 30E10; for all trigonometric approximation and interpolation, see 42A10 and 42A15; for numerical approximation, see 65Dxx]
42-XX - Harmonic analysis on Euclidean spaces
46-XX - Functional analysis [For manifolds modeled on topological linear spaces, see 57Nxx, 58Bxx]

    Informations sur la Vidéo

    Réalisateur : Hennenfent, Guillaume
    Langue : Anglais
    Date de publication : 06/11/14
    Date de captation : 20/10/14
    Collection : Research talks
    Format : QuickTime (.mov) Durée : 01:30:25
    Domaine : Analyse & Applications ; Mathematics in Science & Technology
    Audience : Chercheurs ; Doctorants , Post - Doctorants
    Download : http://videos.cirm-math.fr/2014-10-20_Feichtinger_part1.mp4

Informations sur la rencontre

Nom du congrès : Jean-Morlet Chair - Doctoral school: Computational harmonic analysis - with applications to signal and image processing / Chaire Jean-Morlet - Ecole doctorale : Analyse harmonique computationnelle - avec applications au traitement du signal et de l'image
Organisteurs Congrès : Feichtinger, Hans G. ; Torrésani, Bruno ; Anthoine, Sandrine ; Chaux, Caroline ; Mélot, Clothilde
Dates : 20/10/14 - 24/10/14
Année de la rencontre : 2014
URL Congrès : http://feichtingertorresani.weebly.com/i...

Citation Data

DOI : 10.24350/CIRM.V.18613403
Cite this video as: Feichtinger, Hans G. (2014).Mathematical and numerical aspects of frame theory - Part 1. CIRM . Audiovisual resource .doi:10.24350/CIRM.V.18613403
URI : http://dx.doi.org/10.24350/CIRM.V.18613403

Bibliographie



  • Imagette Video
  • Z