Recently it has been suggested to me that I may benefit from some. I have to say that I have never tried them. For me, it is in a building or a room where lots of people talk at the same time that can be difficult. I have to really concentrate if someone talks to me so I can pick out what they say, but to be honest, I usually tend to avoid the situation. I was told those headphones can pick up a single persons voice and noise cancel all the other people talking which sounds very useful. The only thing that puts me off them is they look quite big. One can't exactly hide the fact that one is using them if one has a pair.
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