第二个好处是，将麦克风增益设置为保守(低)级别，可有效避免削波。

A secondary advantage is that by setting the microphone gain to a conservative (low) level, it is easier to avoid clipping.

youdao

麦克风增益按钮，按下此钮会激活固定在麦克风内的衰减器，它是当本机工作在高噪音环境下使用。

Mic GAIN button. Pressing this button activates the built-in microphone attenuator. This feature is designed to be used when operating the Alan 9001 in high ambient noise environments.

youdao

这对VOIP (voice over IP)是非常有用的，因为它不需要再手动去调整麦克风增益。

This is useful for voice over IP because it removes the need for manual adjustment of the microphone gain.

youdao