Discrete-time signal processing
Discrete-time signal processing
Speaker transformation algorithm using segmental codebooks (STASC)
Speech Communication
High-resolution voice transformation
High-resolution voice transformation
Automatic Speech Recognition Used for Intelligibility Assessment of Text-to-Speech Systems
Verbal and Nonverbal Features of Human-Human and Human-Machine Interaction
Pitch synchronous transform warping in voice conversion
COST'11 Proceedings of the 2011 international conference on Cognitive Behavioural Systems
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In this paper a new voice conversion algorithm will be presented, which transforms the utterance of a source speaker into the utterance of a target speaker or into the utterance of a new unknown speaker. Presented voice conversion algorithm is based on spectral speech analysis, spectral envelope warping, spectrum interpolation and parametrical high quality IIR or FIR cepstral speech synthesis. Several approaches to frequency warping of the speech spectrum are compared, e.g. linear frequency transformation, piecewise linear frequency modification and nonlinear frequency low-pass to low-pass transformation. Prosodic transformation i.e. fundamental frequency, time and intensity scale modifications are not mentioned.