iPhone 4S A5 processor packs a custom EarSmart chip for Siri [Video]

6 February, 2012 Apple

EarSmart


Apple refusal to put its Siri voice control system on the iPhone 4 is not a shameless play to persuade users to upgrade to the 4S, it is suggested, but a limitation of the Apple A5 chip found inside the newest iOS smartphone. The A5, Linley Group analyst Linley Gwennap says, was always too large simply to accommodate two Cortex A9 CPUs and a GPU, CNET reports; the extra bulk is to house an on-chip noise-reduction system sourced from specialists Audience, which revealed its deal with Apple last month.


siri


"Apple has integrated our processor IP in certain of its mobile phones" Audience confirmed in its IPO documentation last month. Based on the company EarSmart technology, it allows phones to use effective background noise cancellation even when the microphone is held at arm reach, rather than when it is near the user mouth.


Audience does not detail its "custom processor for Apple" but the volume inclusion timescale Q4 of 2011 fits in with the launch of the iPhone 4S. EarSmart models the human brain, using two microphones and custom DSP to filter out background sound.


Video Below!



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