均衡器

例句：

1. 1. The engineer used a compressor and equalizer to perfect the sound.
   工程师使用压缩器和均衡器来完善声音。
2. 2. She adjusted the equalizer on her phone to improve the quality of the call.
   她调整了她的手机均衡器以提高通话的质量。
3. 3. The DJ used an equalizer to balance the sound for the audience.
   DJ使用均衡器为观众平衡声音。