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21 Diphone synthesizer

NOTE: use of this diphone synthesis is depricated and it will probably be removed from future versions, all of its functionality has been replaced by the UniSyn synthesizer. It is not compiled by default, if required add ALSO_INCLUDE += diphone to your festival/config/config file.

A basic diphone synthesizer offers a method for making speech from segments, durations and intonation targets. This module was mostly written by Alistair Conkie but the base diphone format is compatible with previous CSTR diphone synthesizers.

The synthesizer offers residual excited LPC based synthesis (hunt89) and PSOLA (TM) (moulines90) (PSOLA is not available for distribution).