By 2012, Ivona was widely considered the best TTS engine in the world, beating competitors like Nuance (Vocalizer) and AT&T Natural Voices. Their voices won awards for clarity, emotion, and breath management.
If you want, I can:
Examples (for personal use only):
It is noted for its natural-sounding intonation, avoiding the "robotic" feel of older TTS systems. text to speech eric ivona