Apple have filed a patent for a “a digital assistant that is capable of detecting a whispered speech input and providing a whispered speech response.” Basically Siri that whispers back to you if you whisper to it. This may be Apple’s attempt at making it’s AI assistants to become more ‘human.’ As a result less awkward to use in public situations.
In the patent, Apple explained in which a whispering Siri will help you out when you need it the most. The situations that Apple listed where Libraries and in an office cubicle. While, Apple also noted that a whispering Siri is intended to protect a users privacy.
The way that an iPhone or Apple watch would be able to detect if a users talking quietly or whispering to it. Would be detecting the amplitude and frequency patterns of a users voice. As a result, Apple want to make Siri actually whisper back to you. Not just turn the volume down on your device. Think about it, when someone whispers something to you, you don’t speak back normally. Subconsciously you make the decision to match the other person’s voice pattern.
Just a patent
It’s also very important to note not all patents become reality.