> It seems like TTS technology hasn't evolved much over the years and I was wondering if any startups are working on making it sound more realistic? It's not t

> It seems like TTS technology hasn't evolved much over the years and I was wondering if any startups are working on making it sound more realistic? It's not true that TTS hasn't improved (see below). Many people are working on this, both in academia and in private enterprise. It's an obvious and potentially valuable part of the human-computer interface. This is not to suggest that it's easy -- the mathematics and vocal tract modeling problems are formidable. The only reason there are reasonable TTS resources now is because of the rapid increase in computer power -- power that's needed to support this feature. Here's a site chosen at random that offers a high-quality TTS example: https://www.ivona.com/ https://www.ivona.com/ It's pretty good based on prevailing standards, and it's the outcome of a lot of work. To find the companies working on this, just Google for "high-quality tts".