Dolby Atmos can work with HDMI ARC (Audio Return Channel) to provide an immersive audio experience. However, there are some limitations to be aware of.
Dolby Atmos is an advanced audio technology that creates a three-dimensional sound field, allowing sound to move around you in a more realistic way. This technology adds height and overhead channels to traditional surround sound setups, resulting in a more immersive and lifelike audio experience.
HDMI ARC is a feature found on most modern TVs and AV receivers that allows audio to be sent from the TV back to the receiver or soundbar using a single HDMI cable. This eliminates the need for additional audio cables and simplifies the setup process.
When it comes to Dolby Atmos, most content is encoded using the Dolby Digital Plus codec. This codec is supported by HDMI ARC and can transmit Dolby Atmos audio to compatible receivers or soundbars. This means that if you have a TV with HDMI ARC and a sound system that supports Dolby Atmos, you should be able to enjoy Dolby Atmos content using HDMI ARC.
However, it’s important to note that HDMI ARC has bandwidth limitations. Dolby Atmos audio requires more bandwidth compared to traditional surround sound formats. As a result, Dolby Atmos audio transmitted through HDMI ARC is typically compressed using the Dolby Digital Plus codec. This compression reduces the audio quality slightly, but it still provides a satisfying Dolby Atmos experience.
On the other hand, if you want to experience lossless Dolby Atmos audio with the highest audio quality possible, you will need to use HDMI-eARC (Enhanced Audio Return Channel). HDMI-eARC is an updated version of HDMI ARC that supports higher bandwidth and can transmit lossless audio formats like Dolby TrueHD, which is used for lossless Dolby Atmos.
To use HDMI-eARC, both your TV and AV receiver or soundbar need to support this feature. Not all devices are equipped with HDMI-eARC, so it’s important to check the specifications of your equipment before assuming compatibility. If you have HDMI-eARC, you can enjoy lossless Dolby Atmos audio, providing the highest audio fidelity available.
Most Dolby Atmos content can be played through HDMI ARC using the Dolby Digital Plus codec, which provides a satisfactory audio experience. However, to enjoy lossless Dolby Atmos audio with the highest quality, HDMI-eARC and the Dolby TrueHD codec are required.