发明授权
US07408109B1 Capacitive electric musical instrument vibration transducer 有权
电容式电乐器振动传感器

  • 专利标题: Capacitive electric musical instrument vibration transducer
  • 专利标题(中): 电容式电乐器振动传感器
  • 申请号: US11354495
    申请日: 2006-02-15
  • 公开(公告)号: US07408109B1
    公开(公告)日: 2008-08-05
  • 发明人: Paul John Freitas
  • 申请人: Paul John Freitas
  • 主分类号: G10H3/00
  • IPC分类号: G10H3/00
Capacitive electric musical instrument vibration transducer
摘要:
A capacitive electric musical instrument vibration transducer contains one or more parallel plate variable capacitors. Each variable capacitor contains one vibrating variable capacitor plate, an electrically conducting surface that comprises, covers, or is embedded within an acoustically emitting vibrating surface on a musical instrument (such as a drumhead or soundboard), and one fixed variable capacitor plate comprising a rigid electrically conducting surface held a fixed distance away. When the instrument is played, the vibrating surface causes vibrations directly (without using airborne sound as an intermediary) in the vibrating variable capacitor plates, thus causing time-varying voltage oscillations in the parallel plate variable capacitors reflecting the vibrational state, and therefore the sound, of the instrument. An electric circuit in the transducer converts these voltage oscillations into the same kinds of signals produced by microphones and magnetic pickups.
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