What does HDMI audio return mean?

HDMI 1.4 introduces a feature called ARC (Audio Return Channel).The ARC feature uses two pins from the connector: a previously unused pin and the hot plug detect pin.
 

ARC is an audio link meant to replace other cables between the TV and the A/V receiver or speaker system. This connection is used when the TV is the one that generates or receives the video stream instead of the other equipment. A typical case is the running of an app on a smart TV such as Netflix, but reproduction of audio is handled by the other equipment. Without ARC, the audio output from the TV needs to be routed by another cable, typically TOS-Link or coax, into the speaker system.

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Posted by:moderator on 19th February 2016 (1813 Views)