HDMI ARC, from English Audio Return Channel, is a special type of HDMI connection that has revolutionized the way we connect our audio and video devices. Unlike conventional HDMI ports, HDMI ARC enables bi-directional audio transmission, greatly simplifying the setup of home theater systems and sound bars.
Simplify your system: One cable for everything
Before the introduction of HDMI ARC in 2009, connecting an external sound system to a TV required multiple cables, such as HDMI for video and optical or coaxial cables for audio. This was cumbersome and impractical. With HDMI ARC, a single HDMI cable is capable of transmitting both video and audio, eliminating the need for additional connections.
Full control with a single command
In addition to audio streaming, HDMI ARC also supports HDMI CEC (Consumer Electronics Control). This feature allows you to control multiple connected devices with a single remote control. For example, you can adjust the volume of your sound bar directly from your TV remote, without the need to change remote control.
Enjoy Premium Surround Sound
HDMI ARC supports high quality audio formats such as Dolby TrueHD and DTS-HD Master Audio. This means you can enjoy stunning surround sound without loss of quality. Furthermore, with the arrival of eARC (Enhanced Audio Return Channel) In the HDMI 2.1 version, the bandwidth is further expanded, allowing the transmission of uncompressed audio in formats such as Dolby Atmos and DTS:X.
HDMI ARC: Everything you need to know
If you still have questions about what exactly HDMI ARC is and how it works, don't worry. Here we explain everything you need to know:
What is HDMI ARC input
The HDMI ARC input is a special port on your TV and on your sound system that allows audio streaming in both directions. Unlike standard HDMI ports, which only send audio and video signals from the source to the TV, HDMI ARC can also send audio from the TV to the sound system.
What is HDMI ARC for?
HDMI ARC is used for simplify connection between your TV and your external sound system, such as a sound bar or home theater receiver. With HDMI ARC, you can use a single HDMI cable to transmit both video from your source (such as a Blu-ray player or game console) to the TV, and audio from the TV to the sound system.
Types of HDMI ARC
There are two main types of HDMI ARC: standard ARC y eARC (Enhanced Audio Return Channel). Standard ARC, introduced with HDMI 1.4, is capable of transmitting high-quality audio, but with some limitations regarding uncompressed audio formats. On the other hand, eARC, presented with HDMI 2.1, offers greater bandwidth and is capable of transmitting lossless audio in advanced formats such as Dolby Atmos and DTS:X.
Differences between HDMI and HDMI ARC
The main difference between HDMI and HDMI ARC lies in the two-way audio transmission capability. While conventional HDMI ports only send audio and video signals from the source to the TV, HDMI ARC allows audio to also be sent from the TV to the external sound system. This eliminates the need for additional audio cables and simplifies setup.
Steps to connect your HDMI ARC cable
To connect an HDMI ARC cable to your TV, first identify the HDMI port labeled “ARC” both on your TV and on your sound system. Then, connect one end of the HDMI cable to the ARC port on the TV and the other end to the ARC port on the sound system. Make sure the HDMI cable you are using supports ARC or eARC.
How to identify a suitable HDMI cable for ARC
Not all HDMI cables support ARC or eARC. To make sure your HDMI cable is compatible, look for the “ARC” or “eARC” label on packaging or product specifications. You can also opt for high-speed or ultra-high-speed HDMI cables, as these are usually compatible with the latest versions of HDMI and its advanced features.
How to set up HDMI ARC
To get the most out of HDMI ARC, make sure both your TV and sound system are compatible. Look for the HDMI port labeled “ARC” on both devices and connect them using a high-speed HDMI cable. Then, in your TV settings, activate the ARC function and select audio output via HDMI. Ready! Now you can enjoy impressive surround audio with the convenience of a single cable.
HDMI ARC has greatly simplified the way we connect our audio and video devices. With the ability to transmit high quality audio, control multiple devices with a single controller and reduce the number of cables required, HDMI ARC has become the perfect connection for a hassle-free home theater experience. Whether you're setting up a surround sound system or simply looking to improve the audio quality of your TV, HDMI ARC is the solution you've been looking for.
I am Sebastián Vidal, a computer engineer passionate about technology and DIY. Furthermore, I am the creator of tecnobits.com, where I share tutorials to make technology more accessible and understandable for everyone.