Yes, it does a quite decent job in both high and low frequencies. The place I live in actually used to have a quite large construction area right next to it, so

Yes, it does a quite decent job in both high and low frequencies. The place I live in actually used to have a quite large construction area right next to it, so having something like this during the day was a godsend. You can still hear it of course, but it’s a lot more quiet. With earbuds specifically it helps that they also act as earplugs even when off, though enabling noise cancelling does get rid of even more noise.