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80年代初期,Philips 公司和 SONY 公司联合开发了一种新的家用电子产品“激光唱机”,现在人们已习惯上称它为“CD”(Compact Disc)。它的全称应为“CD-DA”(Compact Disc Digital Audio),即小型数码录音激光唱机。它是将模拟声音信号通过数字处理存放在一张塑料盘上(现在通常称它为 CD盘或光盘),播放时,利用激光(Laser)来扫描光盘读出信息,并将数字信号转变为模拟信号供人们欣赏。
In the early 1980s, Philips and SONY jointly developed a new home-made audio product called the “compact disc,” which people are accustomed to calling it a “Compact Disc.” Its full name should be “CD-DA” (Compact Disc Digital Audio), a compact digital recording compact disc player. It is the analog sound signal through digital processing stored in a plastic disc (now commonly referred to as CD or CD), the use of laser (Laser) to scan the disc to read out the information and the digital signal into a simulation Signal for people to enjoy.