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Limited Feedback Interaction
Limited Feedback Interaction is a recording technique used primarily in the creation of improvised music. 'LFI' limits the number of other players each participant can hear; this allows each to focus on one or two of the other players' musical output, instead of on the aggregate output of the entire ensemble. It requires acoustic separation of any player not playing an electric instrument, as well as headphones for all players. Instead of each player listening to the entire ensemble, the number of players in each person's headphones is ''limited,'' so that collaboration is more intense and directed—hence the name, 'Limited Feedback Interaction,' abbreviated as 'LFI.' This technique has been described in the newsletter for the Society for Electro-Acoustic Music In the United States ((SEAMUS )), 2010, issue no. 4, in the article "On not hearing everyone..." 〔("On not hearing everyone..." ).〕
Limited Feedback Interaction networks are divided into two main categories—reciprocal & non-reciprocal—and possess different features (symmetrical vs. asymmetrical). LFI matrices are better suited to certain numbers of players (prime numbers work well), and require a spirit of open-minded collaboration to be successful. They are not limited in size other than by the capabilities of the hardware available; in theory, LFI networks could encompass thousands, if not millions, of people.
== Types of LFI Networks ==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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