ANC does not block voices. It's probably passive sound protection in your headphones that causes your partner's voice to sound weak and not go through to your e

ANC does not block voices. It's probably passive sound protection in your headphones that causes your partner's voice to sound weak and not go through to your ear. Or plain and simple, just the music you listen to that masks the voice. The only case ANC would block your partners voice would be if it is about as high/low level as the background noise/sound so that it is all mixed into a white or colored noise which ANC can suppress.