iFixit reports that the chip responsible for handling the noise cancellation capabilities of the iPhone 4 has finally been identified, with chip teardown firm Chipworks pegging it has having come from Audience, the producer of high-end voice processors found in such devices as the Nexus One.



From MacRumors:

The identification was made more difficult by Apple's move to have the chip "white-labelled" by Audience to remove any specific identifying marks on the outside of the chip package. From iFixit's report:There was one small, 3mm x 3mm chip that we weren't able to identify during our teardown. It was white-labelled, meaning Apple asked the manufacturer to remove their branding from the package to make it difficult for folks like us to identify.

  iPhone 4 Noise Cancellation Delivered by Chip From Audience