不同的设备，录音效果会有较大幅度的变动，自动增益控制（AGC）就是用来处理这种现象的。
Automatic gain control (AGC) is a feature that deals with the fact that the recording volume may vary by a large amount between different setups.
将来某一天，或许有这样的工厂，它生产电视机、磁带、录音机、汽车或其他一些产品，而所有的机器均由中央计算机自动控制。
Some day perhaps, there will be factories producing television set, tape recorders, cars, or other products, with all machines operated automatically by a central computer.
将来某一天，或许有这样的工厂，它生产电视机、磁带、录音机、汽车或其他一些产品，而所有的机器均由中央计算机自动控制。
Some day perhaps, there will be factories producing television set, tape recorders, cars, or other products, with all machines operated automatically by a central computer.
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