A special speaker system that allows two people to sit side-by-side in front of a split-screen TV listening to different shows, is attracting attention at CES. Holosonics says its sound-beaming technology means someone could also watch TV in bed without keeping their partner awake as only the watcher need hear the audio. The catch is that it costs about $1,000 (£685), making it an expensive alternative to a pair of headphones. The business was founded Joseph Pompei, a graduate from the Massachusetts Institute of Technology, who explained how it worked at the Las Vegas show.
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