There has been quite a lot of “noise” recently about the ‘Quiet Bubble’ technology developed by Israel’s Silentium. It can create quiet zones around aircraft passengers’ heads. The system, based on Active Noise Cancellation, was demonstrated in California and Washington recently.

http://www.dailymail.co.uk/travel/travel_news/article-2783834/Silentium-Quiet-Bubble-technology-creates-quiet-zones-airplanes.html  http://www.aircraftinteriorsexpo-us.com/en/Exhibitors/425630/Silentium-Ltd

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