acoustical filter

例句：

1. 1. The acoustical filterin the microphone helps to reduce noise.
   麦克风中的声学滤波器有助于减少噪音。
2. 2. The acoustical filter is designed toimprove the sound quality of the recording.
   声学滤波器被设计用来提高录音的声音质量。
3. 3. The acoustical filter iscrucial for maintaining a clear and accurate audiosignal.
   声学滤波器对于保持清晰准确的音频信号至关重要。