The truth? Apple may not be as cynical as all that. In fact, according to a new report from a chips analyst, it all comes down to special noise-reduction circuitry unique to the iPhone 4S’s A5 chip.
CNet reports:
Apple’s A5 processor includes noise-reduction circuitry licensed from a start-up called Audience, and a chip analyst believes that fact resolves an iPhone 4S mystery and explains why the iPhone 4 lacks the Siri voice-control system.While the iPhone 4 does have noise-reduction circuitry, it only works when you place the iPhone to your ear. The EarSmart tech built into the A5 processor can handle what is called “fair-field speech:” in other words, it filters out noise a few feet away.
Audience revealed details of its Apple partnership in January, when it filed paperwork for an initial public offering (IPO) of stock. Teardown work from iFixit and Chipworks revealed a dedicated Audience chip in the iPhone 4, but the iPhone 4S integrates Audience’s “EarSmart” technology directly into the A5 processor, the company’s S-1 filing said.
Obviously, at the end of the day, the iPhone 4 is still technically capable of running Siri. Look no further than the Cydia-only ports of Siri (like Spire) that run just fine on older hardware. The point, however, is that only the iPhone 4S’s noise-reduction technology met Cupertino’s exacting standards, while hackers will take what they can get.
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