What is concatenative TTS versus synthesized TTS?
Concatenative TTS processes human quality wave files to generate the speech in the TTS string. Synthesized TTS is the creation of speech by generating sounds through digitized speech formants. Concatenative TTS usually sounds more natural, while synthesized TTS sounds more “computer like.” The tradeoff is that concatenative TTS systems can be large in size and require lots of drive space in order to run, while synthesized speech systems can usually fit into a few megabytes. There are some happy mediums, in the case where you have a limited vocabulary for the TTS. In a case like saying the time, a small vocabulary concatenative TTS system would work quite well.
