Jean-Christophe L'Hériteau
Toward a signal processing module
Abstract:Within the system the work was exclusively in the final stages. The
main goal was to improve the waveform synthesis modules in CHATR.
Using those f0, duration and power information, the Unit Selection
module selects the most appropriate unit from the data base to find.
However, it is unlikely that a unit with the exact same f0, duration
and power will exist in the data base. For that reason we use signal
processing to smooth and improve the quality of the final output. For
this we use PSOLA. The work reported here consisted in improving
this PSOLA module. There were two main axes of research: a) improving the CHATR signal processing module, and b) improving the
input to this signal processing module.