Over the past few years Siri has taken a big step forward, has learned to better recognize the user's voice and has become, perhaps, more like a person. And soon the voice assistant Apple will come to a new level – he himself will know when you are talking in a whisper, and will respond in the same way in a whisper in response.
The corresponding patent was at the disposal of Gizmodo, and although the application for it was filed by Apple in 2016, the media leaked only now. The document describes a "digital assistant capable of recognizing speech whispered, with a whisper function". According to Apple, this functionality can be useful, for example, in a library, an open office, or in other cases when it is necessary to remain quiet and secretive.
If you try to address Siri in a whisper now, in most cases the voice assistant will recognize your speech, but answer in his usual voice. However, now the microphones installed in smartphones, still lag behind the other components. They are unable to "cleanly" perceive voices, filter sound from noise, so often Siri simply does not understand you.
So you can train the voice assistant as much as you like and introduce new algorithms: while microphones on the iPhone do not make a big step forward, Siri will not work the way we want.