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Speech synthesis using phase vocoder techniques

Joseph Di Martino 1 
1 PAROLE - Analysis, perception and recognition of speech
INRIA Lorraine, LORIA - Laboratoire Lorrain de Recherche en Informatique et ses Applications
Abstract : A new light is thrown on the Portnoff [1] speech signal timescale modification algorithm. It is shown in particular that the Portnoff algorithm easily accommodates expansion factors bigger than 2 without causing reverberation nor chorusing. The modified Portnoff algorithm, which draws on spectral modification techniques due to Seneff [2], has been tested on several speech signals. The quality of the synthesized signal is totally satisfactory even for big expansion factors. The article gives a brief summary of the Portnoff algorithm and spells out the modifications introduced. It is shown that the phase unwrapping procedure constitutes a crucial point of the algorithm.
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Submitted on : Tuesday, June 18, 2013 - 2:11:58 PM
Last modification on : Wednesday, February 2, 2022 - 3:51:46 PM


  • HAL Id : hal-00835319, version 1



Joseph Di Martino. Speech synthesis using phase vocoder techniques. EUROSPEECH - Fifth European Conference on Speech Communication and Technology - 1997, Sep 1997, Rhodes, Greece. ⟨hal-00835319⟩



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