This May be Why Siri is Limited to the iPhone 4S

Learn more about Siri

Even to this day, people wonder why Siri is exclusive to the iPhone 4S. Some say it is because Apple’s “evil” and others say it is due to the new hardware the iPhone 4S utilizes. Nobody knows the real answer to date, but there are many theories that have been formed. CNETreports that according to a new research from analyst Linley Gwennap, who believes that the custom circuitry in Apple’s A5 chip including “earSmart” noise cancellation technology from Audience is the reason why Siri is exclusive to the iPhone 4S.

The earSmart technology discovered is apparently supposed to be betteer at reducing background noise than the technology used in the iPhone 4. This enables Siri to more easily pick out the user’s voice. His source was Audience’s S-1 filing which made its way to the U.S. Securities and Exchange Commission as the company moves forward to becoming a publicly traded company.

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. […]

“Even after accounting for the dual Cortex-A9 CPUs and the large GPU that provides the A5 with industry-leading 3D graphics performance, the remaining die area seems too large for the usual mundane housekeeping logic,” Gwennap said in a report yesterday. “To reduce system cost and eliminate the extra package required for the Audience chip, Apple cut a deal to integrate the noise-reduction technology directly into its A5 processor, which appears in the iPhone 4S.”

In addition, the maker of the earSmart technology highlights in its S-1, that it is now receiving royalties from Apple. The royalties are lower than the payments it had previously received for the specific chips. Another interesting disclosure the company made is that it has licensed its next-generation noise cancellation intellectual property to Apple, although Apple is under no obligation to use it in future devices.

Commencing in the three months ended December 31, 2011, Apple has integrated our processor IP [intellectual property] in certain of its mobile phones. Pursuant to our agreement, this OEM [original equipment manufacturer] will pay us a royalty, on a quarterly basis, for the use of our processor IP for all mobile phones in which it is used. We have granted a similar license to this OEM for a new generation of processor IP; however, this OEM is not obligated to incorporate our processor IP into any of its current or future mobile devices.

Bottom line is that Apple isn’t being evil. If Apple would have been able to make Siri work great on other devices, they probably would have by now. By the way, hey Android owners, receive that OS update yet?

Published by

Parth Dhebar

Parth Dhebar is a 18 year-old entrepreneur. He is the founder of Simple Reviews, a blog focused on reviewing iPhone and iPad applications. Parth is a recognized name in the industry, known for covering Apple news. He is an editor at Techie-Buzz covering news on Apple. You can follow him on Twitter @pdparticle.