what is the difference between hdmi arc and earc?

HDMI vs HDMI ARC vs HDMI eARC - BoomSpeaker

What is eARC and how is it different from ARC?

What Is HDMI ARC?

What is the difference between HDMI ARC and eARC? - The Solid Signal Blog

ARC and eARC: The Audio Feature that Enhances Your Home Theater Experience

The Difference between HDMI ARC and eARC – Simple Home Cinema

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HDMI ARC - What is eARC? Audio Return Channel

Etzin 8K HDMI 2.1 eARC Audio Extractor 7.1CH HDMI ARC eARC To Coaxial Optical Toslink SPDIF Stereo Analog Audio Return Channel Adapter : : Electronics

UVOOI 8K HDMI ARC/eARC Cable for Soundbar 6.6FT, eARC HDMI 2.1 Cable, High Speed HDMI Cord 48Gbps 8K@60Hz, 4K@120Hz Dolby Atoms (HDCP 2.2&2.3, 3D, HDR10) for Sound bar, Roku TV, PS5

Difference between HDMI ARC and eARC

HDMI eARC Vs. ARC: Which Is Better For Your Audio Setup?

Difference Between an HDMI Cable and HDMI ARC Cable