Apple is researching how to detect environmental noise levels and user voice patterns so Siri can respond with a yell or a whisper as needed. Siri could one day adjust its volume and pitch based on environmental conditions Siri has been widely criticized for its lack of feature parity with rivals. The discontinuation of HomePod has again placed Siri in the spotlight as the smart assistant approaches its tenth birthday. A patent application published on Thursday shows one area Apple seeks to improve with its assistant -- environmental awareness. Currently, Siri will respond with the same voice, volume, and inflection regardless of how noisy a room is or how the command is given.