Fonix has constructed soundbanks in German and Japanese for demonstration purposes. Virtually any language can be supported. The size of the soundbank is dependent upon the size of the vocabulary. A typical soundbank is about 1.5 MB in size and has approximately 100 words and phrases. The minimum system requirements are 16 MB of RAM and hard disk space to hold the soundbank.
Synthesis speed depends on a number of factors.
A soundbank for the Customized Vocabulary TTS is defined to a specific vocabulary. Altering the pronunciation of a word or adding to the vocabulary requires soundbank manipulations that Fonix can implement for you. If the soundbank is defined to handle numbers, then it is virtually indistinguishable from human speech. If the soundbank is defined to handle the names in question, then it is virtually indistinguishable from human speech. As many or as few as are needed.