V2EX input gain

Input Gain

释义 Definition

输入增益:指在音频设备或软件中,对进入系统的信号在最初阶段进行放大或衰减的控制(常见于前级放大器、音频接口、调音台、插件的输入旋钮)。它主要影响信号进入后续处理前的电平,用于避免过小导致噪声明显,或过大导致失真/削波。
(注:不同设备上也可能标作 Input, Gain, Trim;有时与“输出音量/推子”概念不同。)

发音 Pronunciation (IPA)

/npt en/

例句 Examples

Set the input gain so your voice isn’t too quiet.
把输入增益调到合适,让你的声音不要太小。

If the input gain is too high, the preamp may clip, and any EQ or compression later will amplify the distortion even more.
如果输入增益过高,前级可能会削波失真,后面的均衡或压缩还会把这种失真进一步放大。

词源 Etymology

Input 来自拉丁语 **in-**(“进入”)+ putare(“放置/认为”),在现代英语中常表示“输入、投入”。Gain 源自古法语 gain(“收益、获得”),在电子与音频语境里引申为“增益/放大倍数”。合起来 input gain 就是“对输入信号进行的增益控制”。

相关词 Related Words

文献与作品 Literary Works

  • The Mixing Engineer’s Handbook(Bobby Owsinski)常讨论输入电平/增益设置与失真控制
  • Mastering Audio: The Art and the Science(Bob Katz)涉及增益结构(gain staging)与电平管理
  • Yamaha Sound Reinforcement Handbook(Gary Davis, Ralph Jones)讲解现场扩声中的输入增益与系统电平链路
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