英国一家公司最近推出一种最新式的数字录音技术。它能把4倍于一张激光唱片的录音容量录在一张激光唱片上,新技术所需的信号通频带仅为普通数字录音频带的25%,即使通过电话线路,也能把高质量的音乐从一地传输至另一地。该技术传输数字信号的速率仅为普通数字录音技 A British company recently introduced a state-of-the-art digital recording technology. It can 4 times the recording capacity of a laser disc recorded in a laser disc, the new technology required signal pass frequency band is only 25% of normal digital recording frequency band, even through the telephone lines, but also to high-quality The music is transmitted from one place to another. The rate at which digital signals are transmitted by this technology is only normal digital recording technology