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On the construction of a pitch conversion system

In order to fully transform the perceived speaker identity, a voice conversion system should also convert the speaker's prosodic characteristics. When considering pitch contours, most systems only transform the pitch by simple scaling. A stochastic system that transforms pitch contours taking into account multiple pitch parameters, instead of only applying simple scaling, has been developed and will be described. A pitch transplantation system based on the overlap-add (OLA) algorithm is proposed as a tool for the evaluation of this pitch conversion system.