On Stretching Gaussian Noises with the Phase Vocoder - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2012

On Stretching Gaussian Noises with the Phase Vocoder

Alvin W.Y. Su
  • Fonction : Auteur
  • PersonId : 957755

Résumé

Recently, the processing of non-sinusoidal signals, or sound textures, has become an important topic in various areas. In general, the transformation is done by the phase vocoder techniques. Since the phase vocoder technique is based on a sinusoidal model, its performance is not satisfying when applied to transform sound textures. The following article investigates into the problem using as example the most basic non-sinusoidal sounds, that are noise signals. We demonstrate the problems that arise when time stretching noise with the phase vocoder, provide a description of some relevant statistical properties of the time frequency representation of noise and introduce an algorithm that allows to preserve these statistical properties when time stretching noise with the phase vocoder. The resulting algorithm significantly improves the perceptual quality of the time stretched noise signals and therefore it is seen as a promising first step towards an algorithm for transformation of sound textures.
Fichier principal
Vignette du fichier
dafx12_submission_41.pdf (151.96 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01011882 , version 1 (24-06-2014)

Identifiants

  • HAL Id : hal-01011882 , version 1

Citer

Wei-Hsiang Liao, Axel Roebel, Alvin W.Y. Su. On Stretching Gaussian Noises with the Phase Vocoder. Proc. of the 15th Int. Conference on Digital Audio Effects (DAFx-12), Sep 2012, York, United Kingdom. pp.41. ⟨hal-01011882⟩
135 Consultations
193 Téléchargements

Partager

Gmail Facebook X LinkedIn More