Hybrid active noise cancelation vs active noise cancelation?

Hybrid active noise cancelation vs active noise cancelation what is the difference?
what does the hybrid part mean. The Anker Soundcore space NC advertise having hybrid active noise cancelation while the Anker Soundcore life 2 advertise active noise cancelation. Is there a difference?
Thanks for the help

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Hybrid NC seems to add another external microphone to catch sound before it gets inside the headphone. Active NC only seems to have the microphone inside the headphone for feed-back.

http://www.davidclarkcompany.com/aviation/technology-hybrid.php

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