I mean noise cancellation headphones filters out the trucks, pans, and dogs, but many don't filter human voice range. Also why it doesn't work in some offices.

I mean noise cancellation headphones filters out the trucks, pans, and dogs, but many don't filter human voice range. Also why it doesn't work in some offices. If it's too quiet, you can play some form of music, water sounds, white noise, or a mix. There's some that add the hum of cafe voices too.