Playstation 4 Audio Processor Details Leaked: Rumor
Back in February 2013, Mark Cerny, Lead System Architect behind their Sony's next-gen console, confirmed in one of the interview that PS4 features a dedicated audio processor (ACP).
At that time no details was revealed as to what exactly this dedicated Audio Processor in PS4 is capable. Well this has change now, a slide from Sony's presentations has arrived on internet giving out details about capabilities of PS4 Audio Processor.
As per the details in the slide, Audio Processor manages basic tasks, for game or system, relying on the CPU or GPU for advanced tasks.