white noise - http://www.google.com.ph/imgres?q=white+noise+images&hl=en&sa=G&biw=1024&bih=636&tbm=isch&prmd=imvnsa&tbnid=QVwUVKp6-5UF5M:&imgrefurl=http://siliconangle.com/blog/2010/09/13/the-fcc-considering-airwaves-for-wifi-goodbye-hotspots/white-noise-tv/&docid=FqPen2eVDISiLM&imgurl=http://siliconangle.com/files/2010/09/white-noise-tv.jpg&w=400&h=350&ei=bTdoULOKGoSiiQK10IGQDw&zoom=1&iact=hc&vpx=411&vpy=170&dur=2100&hovh=210&hovw=240&tx=117&ty=97&sig=107221525924359915142&page=4&tbnh=150&tbnw=171&start=55&ndsp=20&ved=1t:429,r:7,s:55,i:273