V2EX aftertouch

Aftertouch

定义 Definition

Aftertouch(键后触感/后触)指在按下琴键之后继续施加的压力变化,用来控制声音参数(如颤音、音量、滤波器开度等),常见于合成器与MIDI控制中。也常被称为key pressure(键压)。在MIDI里分为Channel Aftertouch(通道后触)与Polyphonic Aftertouch(复音后触)。

发音 Pronunciation (IPA)

/f.tr.tt/

例句 Examples

The keyboard supports aftertouch for expressive playing.
这台键盘支持后触,能让演奏更有表现力。

By mapping aftertouch to the filter cutoff, she could brighten the sound without lifting her fingers from the keys.
她把后触映射到滤波器截止频率,这样手指不离键就能让音色变得更明亮。

词源 Etymology

after- 表示“在……之后”,touch 表示“触碰/触感”。合起来字面意思是“之后的触碰”,在电子键盘语境中引申为“按键动作完成后,继续施压所产生的控制信息”。

相关词 Related Words

文学与著名作品 Literary / Notable Works

  • The MIDI Manual(David Miles Huber):讲解MIDI控制信息时会讨论aftertouch及其应用。
  • MIDI 1.0 Detailed Specification(MIDI Manufacturers Association,MMA):在规范中定义了Channel Pressure与Polyphonic Key Pressure(即aftertouch相关消息)。
  • Electronic Music and Sound Design(Alessandro Cipriani & Maurizio Giri):在合成与控制章节中常提到用aftertouch增强演奏表现力。
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