automatic volume compressor

例句：

1. 1. The automatic volume compressor is designed to automatically adjust the volume of audio signals.
   自动调压器设计用来自动调整音频信号的音量。
2. 2. The automatic volume compressor was installed in the new car's engine compartment.
   自动调压器安装在新车的引擎舱内。
3. 3. The automatic volume compressor helps to reduce noise levels in the environment.
   自动调压器有助于降低环境中的噪音水平。