I did, but that was never enough: even 37dB ear muffs aren't enough to completely suppress the noise of a conversation happening nearby, but the ear muffs plus the walls and the door are.
And, of course, as others point out, the auditory distractions are only part of the problem with an open floor plan.
And, of course, as others point out, the auditory distractions are only part of the problem with an open floor plan.