ARC

Audio Return Channel (ARC) is a new HDMI feature that allows audio from a TV display device to be transmitted over the HDMI cable back to the AV receiver. This allows the TV’s internal tuner and/or Network receivers to feed audio to the home theater system, without requiring an additional cable. It also allows the selection of audio from the TV between the home theater system and the TV’s built-in speakers. This does not require a special cable, but it does require support by the AV receiver and any other devices in the signal path. Since it is a reverse-path signal, it requires special treatment in extenders, switchers, and splitters.

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