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A Shape-Invariant Phase Vocoder for Speech Transformation

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text
 

Genre(s)

article
 

Forme(s)

document numérique
 

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Titre

A Shape-Invariant Phase Vocoder for Speech Transformation
 

Nom(s)

Roebel, Axel (auteur)
 

Publication

Graz, Austria , 2010
 

Description

Sujet(s)

shape invariant speech processing   phase vocoder   synchronous overlap-add   noise processing.
 

Résumé

This paper proposes a new method for shape invariant real- time modification of speech signals. The method can be un- derstood as a frequency domain SOLA algorithm that is us- ing the phase vocoder algorithm for phase synchronization. Compared to time domain SOLA the new implementation provides improved time synchronization during overlap add and improved quality of the noise components of the trans- formed speech signals. The algorithm has been compared in two perceptual tests with recent implementations of PSOLA and HNM algorithms demonstrating a very satisfying per- formance. Due to the fact that the quality of transformed signals stays constant over a wide range of transformation parameters the algorithm is well suited for real-time gender and age transformations.
 

Note(s)

Contribution au colloque ou congrès : Digital Audio Effects (DAFx)
 

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Date de la notice

2010-12-17 01:00:00
 

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