Devices and smart home
CEC
Abbreviation for Consumer Electronics Control
In short and in plain language
CEC is a feature of the cable for picture and sound.
It lets linked devices control each other.
So the remote for the television can also set how loud the soundbar is.
The name in the menu can change from maker to maker.
Definition
CEC is an HDMI function that lets connected devices control each other. For example, the television remote can then also adjust the soundbar volume. Depending on the manufacturer, the function has a different name in the menu.