HDMI 2.1 features Enhanced Audio Return Channel (eARC) which is an advancement over the previous Audio Return Channel (ARC). eARC simplifies connectivity and provides greater ease of use for multiple components discovery and audio optimization. It supports the latest high-bitrate audio formats up to192kHz, 24-bit, and uncompressed 5.1 and 7.1, and 32-channel uncompressed audio. It also supports DTS-HD Master Audio™, DTS:X®, Dolby® TrueHD, Dolby Atmos®. Now it’s easier than ever to experience movie theater quality sound in a living room for an immersive multi-dimensional experience and enhanced audio detail and depth.
eARC enables the audio to a TV that originates from cable, satellite, streaming or source devices to be sent to an AVR or sound bar through a single HDMI cable. This ensures the simplicity of connectivity and that the original audio can be experienced.
eARC Comparison
The eARC Data Channel is a bi-directional , 1 MHz common mode signal which is transmitted over the eARC(HEAC) differential pair. This channel provides auto discovery and other features listed in the table .
FAQ
1. Will it work with any HDMI Cable ?
This works with HDMI High Speed Cables with Ethernet and the new Ultra High Speed HDMI Cable.
2. Is eARC available through a firmware upgrade ?
Generally speaking, no. Check with the manufacturer of your product to confirm.
3. What audio formates are supported ?
The latest high-bitrate audio formats are supported including DTS Master, DTS:X, Dolby TrueHD, Dolby Atmos and more.
4. . Will the existing ARC-enabled products work with new products that use eARC ?
Maybe. Manufacturers can produce products that are compatible with both eARC and ARC. However, eARC is not defined to be backwards compatible with ARC.