Title:
圧電ピックアップ用補償回路
Document Type and Number:
Japanese Patent JP3607707
Kind Code:
B2
Abstract:
The signal from a piezo-electric transducer in an electro-acoustic guitar is modified by a variable depth notch filter. The notch filter includes two paths between an input and a summation circuit. The signals in the two paths are 180 DEG out of phase and one of the paths includes a bandpass filter. The notch is located at approximately 5 khz. The depth of the notch depends upon either the broadband amplitude or the narrowband amplitude of the signal from the transducer and the depth of the notch is controlled using either feedback or feedforward control.
Inventors:
Weiss, Robin Dee
Application Number:
JP54407998A
Publication Date:
January 05, 2005
Filing Date:
April 07, 1998
Export Citation:
Assignee:
Fender Musical Instruments Corporation
International Classes:
G10H1/12; G10H3/18; (IPC1-7): G10H3/18; G10H1/12
Domestic Patent References:
| JP3179399A | ||||
| JP52144633U | ||||
| JP57202215U | ||||
| JP5094191A |
Foreign References:
| US3493669 | ||||
| US4399326 |
Attorney, Agent or Firm:
Kazuo Shamoto
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Yoshio Akimoto
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Yoshio Akimoto