  The development of pathological speech systems is currently hindered by the
lack of a standardised objective evaluation framework. In this work, (1) we
utilise existing detection and analysis techniques to propose a general
framework for the consistent evaluation of synthetic pathological speech. This
framework evaluates the voice quality and the intelligibility aspects of speech
and is shown to be complementary using our experiments. (2) Using our proposed
evaluation framework, we develop and test a dysarthric voice conversion system
(VC) using CycleGAN-VC and a PSOLA-based speech rate modification technique. We
show that the developed system is able to synthesise dysarthric speech with
different levels of speech intelligibility.
