A comparison between allophone, syllable, and diphone based TTS systems for Kurdish language

nowadays, concatenative method is used in most modern TTS systems to produce artificial speech. The most important challenge in this method is choosing an appropriate unit for creating a database. This unit must warranty smoothness and high quality speech, and also, creating database for it must take reasonable resources and should be inexpensive. Syllable, phoneme, allophone, and, diphone are usually used as the units in such systems. In this paper, we implemented three synthesis systems for Kurdish language, respectively based on syllable, allophone, and diphone. We compare the quality of the three systems, using subjective tests.