What is ENC? November 04, 2022 03:22 Updated ENC stands for Environmental Noise Cancellation. It is specially tuned to remove unwanted background noise while using the microphone. For your microphone, ENC ensures others don't hear your background noise when speaking. Related articles What is Clear Voice (ENC)? How does the built-in timeout feature work? How many devices can Ear (stick) be paired with? Which Bluetooth sound codecs are supported by Ear (stick)? Can I use just one of my earbuds?