Google's apparent decision to make its own wireless audio system appears to have come after stopping at least some activity with accessory makers, according to Electronista sources. Now said to have based its work on the Android@Home technology shown at Google I/O last year, the company had been talking to accessory makers building up to the May event but grew silent not long after. The silence might not necessarily have been ubiquitous, but it suggested that Google had taken the reins to make a product of its own.