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2013-09-26 - Travail avec promoteur/Doctorat - Anglais - 208 page(s)

Moinet Alexis , "Slowdio: Audio Time-Scaling for Slow Motion Sports Videos", Dutoit Thierry (p) , 2008-09-01, soutenue le 2013-09-26

  • Codes CREF : Sciences de l'ingénieur (DI2000), Technologies de l'information et de la communication (TIC) (DI4730)
  • Jury : Pirlot Marc (p) , Dutoit Thierry , Verhelst Werner, Röbel Axel, D'alessandro Nicolas
  • Unités de recherche UMONS : Théorie des circuits et traitement du signal (F105)
  • Instituts UMONS : Institut NUMEDIART pour les Technologies des Arts Numériques (Numédiart)
Texte intégral :

Abstract(s) :

(Anglais) Today, most of sports television broadcasts feature slow motion playbacks. Until now, these have been silent. In this thesis, we present several state of the art methods for time-scaling of audio signals and study their behavior when applied to a new database of sports recordings. We argue that the underlying models used to develop these methods do not correspond to the noisy audio signals recorded during sports events. Besides, transient sounds need to be detected and processed separately from the rest of the signal, which proves difficult in the typical noisy environments of sports events. Based on hypotheses that better fit the actual content of these recordings, we develop a new method that produces convincing time-scaled audio signals while implicitly handling transients. Furthermore, we introduce a new time-scaling approach for harmonic sounds such as speech and single-instrument music recordings.


Mots-clés :
  • (Anglais) time-scaling
  • (Anglais) slow motion
  • (Anglais) texture synthesis
  • (Anglais) phase vocoder
  • (Anglais) sports
  • (Anglais) audio
  • (Anglais) granular synthesis