ADD 指CD唱片按模拟方式录音,按数字方式进 行编辑和制作母带。 AC(Alternating Current) 交流电,指电流方向会作周期性改变的市电 供电电源,英美多用60Hz,我国则采用50Hz 的。 有源分频网络(Active Crossover) 指可将声频信号的频率组成分量(低音、中 音及高音)在放大之前便进行分组而分别加 到各自的扬声器系统去的一种有源电子网 络。虽然有源分频网络多半均内装于超低音 音箱之类的音箱之中,用以推动低音喇叭, 但在多路系统中,也可单独使用有源分频网 络。 ATRAC 指自适应变换声学编码。系一种由日本索尼 公司在其推出的MD磁光盘录音机中所采用 ADD refers to the CD record analog recording, digital editing and mastering. AC (Alternating Current) AC, refers to the direction of current will be cyclical changes in the city power supply, Britain and the United States more use 60Hz, China is the use of 50Hz. Active Crossover (Active Crossover) refers to an audio signal can be frequency components (bass, tenor and treble) before amplification to be grouped and added to the respective speaker system to an active electronic network. Although most active crossover networks are housed in speakers such as subwoofers for boosting woofers, the active crossover network can also be used alone in multiplexed systems. ATRAC refers to adaptive transform acoustic coding. It is used by Japan’s Sony Corporation in its introduction of MD magneto-optical disc recorders