The 术语 打碟 was coined to 描述 the practice of the 实时 处理 of 12-inch 碟盘 on highly adapted turntables It grew up in US discos where DJs began to programme the records they played running them together cutting one into another on 拍（音） and in key superimposing 交叉淡化 and so on Soon this 发展 to the point where a good DJ could play records as an 伴奏 or 独奏 乐器 along with a 节奏 box other 轨道 or singing New and extended 技术 emerged for instance the 节奏 滑动 of 碟盘 to and fro rapidly by hand on a 低 friction mat to 创作 节奏 and cross 节奏 alongside old 音乐 具体 技术 控制 速度 alterations and Sillons fermé riffs 源 - Chris Cutler 2000 掠夺之声 in Simon Emmerson ed 音乐 电子 媒体（媒介） and Culture Aldershot Ashgate