There has been that noticeable robotic intonation to the voice assistants in our phones but Google is now adopting dedicated approaches to get past this by Introducing more human element to it. As such Google has brought out a fresh voice for the Google Now / Search app on iOS and Android. And really it takes on a well different sound from its predecessors as there is much more natural tone to it. Of course you will still be able to identify it as a constructed voice, but then the previously audible robotic part is well off by a chunk.
The aim of Google is to shift more emphasis on intonation, making it much smoother as regards the falls and the rises in its speech. And this time, it has done a much improved task at copying a great deal of how a normal human being would talk. Certainly, it is very easy to notice the difference. If I go into comparison, well the new Google Voice is doing a better job at smoothness than its rivals.