iPhone 4S has special noise reduction hardware for SIRI, makes official iPhone 4 Siri port unlikely

It turns out that Apple's Siri voice assistant is enabled by special noise reduction hardware called earSmart, wired right into the Apple A5 processor.

Source: http://feedproxy.google.com/~r/TheIphoneBlog/~3/XjHSnLjrTog/story01.htm

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