NC headphones typically have multiple microphones, the more there are, the better the NC can be. This is because the first part of NC is detecting ambient noise, the second being generating soundwaves to cancel out what's picked up by the mics.
With more mics it's possible to get more accurate NC, especially for directional sounds.
However more mics won't necessarily mean better call quality, they may not even be used at all for voice.
For example my Jabra NC pair has really good microphone quality for calls, this is done by having a dedicated boom microphone, in this case nothing to do with the multiple NC microphones.
With more mics it's possible to get more accurate NC, especially for directional sounds.
However more mics won't necessarily mean better call quality, they may not even be used at all for voice.
For example my Jabra NC pair has really good microphone quality for calls, this is done by having a dedicated boom microphone, in this case nothing to do with the multiple NC microphones.