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A silent disco or silent rave is an event where people dance to music listened to on wireless headphones.〔(Oxford English Dictionary )〕 Rather than using a speaker system, music is broadcast via a radio transmitter with the signal being picked up by wireless headphone receivers worn by the participants. Those without the headphones hear no music, giving the effect of a room full of people dancing to nothing. In the earliest days of silent discos, before 2005, there would be only one channel available to listen to music through. Over time, the technology moved along to where there were two, and later technology allowed for a third channel that three separate DJs could broadcast over at the same time. Silent discos are popular at music festivals as they allow dancing to continue past noise curfews. Similar events are "mobile clubbing" gatherings, where a group of people dance to the music on their personal music players. ==History== An early reference in fiction is the 1969 Finnish science-fiction film ''Ruusujen Aika'' ("A Time of Roses"), where characters wear headsets during a party. The concept was also used by eco-activists in the early 1990s, utilizing headphones at outdoor parties to minimize noise pollution and disturbance to the local wildlife. In May 2000 ‘BBC Live Music’ held a "silent gig" at Chapter Arts Centre in Cardiff, where the audience listened to a band, Rocketgoldstar, and various DJs through headphones.〔(BBC Music Live events unfold )〕 The term "silent disco" has been existence since at least 2005 with Bonnaroo Music Festival advertising such an event that year. The Oxford Dictionary Online added the term "silent disco" to their website in February 2011.〔 As interest has increased, there has been a rise in the number of companies organizing parties and providing events with wireless headphones. Some companies have offered home kits. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Silent disco」の詳細全文を読む スポンサード リンク
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