http://www.ted.com/talks/julian_treasure_why_architects_need_to_use_their_ears.html

I think most all of us can relate to experiencing beautifully designed environments with poor sound. Certainly anyone that’s been in a hip restaurant with an industrial feel – concrete floors, brick walls and thick wood beams – knows how hard it can be to carry on a conversation with the person next to you. We encourage to listen to this short TED Talk by sound expert Julian Treasure on just how big of an impact sound has on productivity and the experience.