Apple selected leading Audience noise cancellation technology for iPhone 4While it was known that Apple's iPhone 4 incorporated dual microphones for noise cancellation, teardown experts at iFixit and Chipworks have now identified the audio chip as being a product of Audience, recognized to be the industry's leading vendor.
As described in a report by iFixit, the identity of the iPhone 4 audio processing chip was originally obscured because it remained white labeled.
The site states that "Apple asked the manufacturer to remove their branding from the package to make it difficult for folks like us to identify," and added that the part number didn't match any recognizable components during the initial teardown when iPhone 4 first came out last summer.
Both the GSM/UMTS and CDMA version introduced for Verizon Wireless this spring (pictured above) use the same mystery chip. Its identity has now been revealed thanks to a chip decapping by Chipworks, conclusively indicating that Apple uses a low power audio signal processor designed by Audience, providing analog front ends and an embedded DSP (digital signal processor).
The group notes that due to Audience's chip, "the iPhone's audio cancellation capabilities are very impressive, outperforming just every non-Audience powered cell phone weve tried."
The now discontinued Google Nexus One also used an Audience chip for noise cancellation, beating Apple to market with the technology but ultimately failing to sell in comparable volumes.
On Topic: iPhone
- Samsung's Galaxy S6, S6 Edge receive tepid interest in native South Korea
- Apple 'unlikely' to launch new 4-inch iPhone model this year, insider says
- Apple updates several optional iOS apps, adds Watch remote support to Keynote
- ARM earnings grow 22 percent on royalties from newer smartphones like iPhone 6
- Google to discontinue YouTube support on older iOS devices, Apple TVs