Articles, tagged with "clinical trial", page 1
This technology takes outdoor sound
This technology takes outdoor sound and broadcast a comparable influx seems to cancel out external sound. It turns out the sound so you can listen through headphones seem not have any disorder. A very good example of how these headphones can be used is th...
![Bookmark and Share](http://s7.addthis.com/static/btn/v2/lg-share-en.gif)