Hi, 
 I am a public health specialist and physician and who is now offering specialized sleeping headphones along with a tested sleep sound program through my website. I conducted a survey/study with the sleep sound program first, and found that it was very beneficial to people. ( I am offering it at the very low rate of 22 dollars through my website, so as to maximize benefit for the most people.)  I am wondering if this sort of thing is something you might be interested in checking out or if you would be interested in reading the study? I have about 340 users currently, and the feedback has been 90% positive. A link to my report is here: 
http://www.bloomingwellness.com/blog/wp-content/uploads/2013/07/SleepSurveyReport-Booklet-072214.pdf
Dr. Stair 