This 术语 is 不 only the German 相当于 of 电子 樂/乐 it was the 起始 术语 used from 1949 originally by Werner Meyer-Eppler throughout the 1950s for 樂/乐 that was made a German 无线电 广播 facilities originally at the NWDR in Cologne All 声 were 电子 生成 thus 不 involving any acoustic 录音 or acoustic or 电子 乐器 This 术语 when used outside of the German 语言 提及 to these early years and the 种类 of formalised 樂/乐 底/基于 on the 排序 of 樂/乐 参数 that was made by early pioneers 包括 Herbert Eimert 德国电子 樂/乐 was the polar opposite of 樂/乐 實/具体