a 工具 for presenting 电子声学 音乐 that is composed within the 工作室 扬声器 take the place of 音乐家 upon the stage and around the auditorium with the performer/composer sat at the 混音 console ‘conducting’ the 表演 The 表演者 发送 different 电平/级别 of 声音 to each 扬声器 heightening the 空间 现有 within the 音乐 and completely 环境 the 听众 with 声音 The very first 系统 were designed to present 立体声 作品 in 环绕 声音 but later 系统 can spatialise 多线路 作品 Famous examples are the Acousmonium at the GRM in Paris France BEAST at Birmingham University UK and the ZKM’s Klangdome in Karlsruhe Germany

See also 扩散