Great sound muffling device!
I am a Massage Therapist and I like this device for two reasons:<br />1)  I place it just outside my treatment room door and turn it up all the way.  I have tested it by having someone speak really loud in my office and now you cannot hear the exact words said and it covers up almost all sounds if the conversation is done at normal voice levels...so it helps keep client confidentiality.<br />2)  It muffles the sounds coming into my office space from the hallway  when people are walking, talking or being loud near my office.<br />Combined with playing soft music in my space, this is a great combination for my needs.
Rating: 5 stars