While Siri sounds decent most of the time, it still comes off as a little robotic. With iOS 13, however, Siri should sound a lot more human. At WWDC, Apple said it’s taken a “huge step forward” by incorporating a neural text-to-speech transmitter that makes Siri a lot more natural than before. It has a much more natural cadence, and better emphasis on certain words.
Unlike the old version of Siri, the iOS 13 voice is entirely generated by software, instead of using audio clips from voice actors. In a brief demo shown onstage, the new voice does seem to do a better job at actually pronouncing words, especially ones that are more complicated (like “thermodynamics”). The new voice is also better at longer sentences, stressing syllables more accurately than the older version.
The improved Siri voice should be rolling out across Apple’s various devices, including iPhone and iPad, HomePod, CarPlay, and more when the software updates release later this year.