What will be standardized for MPEG-4 TTS?
qFor MPEG-4 TTS, only the interface bit stream profiles are the objects of standardization. Because there are already many different types of TTS and each country has several or a few tens of different TTSs synthesizing its own language, it is impossible to standardize all the things related to TTS. However it is believed that almost all TTSs can be modified to accept MPEG-4 TTS interface bit stream profile in an hour or two by a TTS expert because of the rather simple structure of the MPEG-4 TTS interface bit stream profiles.