Title:
METHOD AND DEVICE FOR REMOVING FEEDBACK COMPONENT IN STAGE MONITOR
Document Type and Number:
Japanese Patent JPS5817800
Kind Code:
A
Abstract:
Apparatus for eliminating feedback in stage monitors for selected musical instruments includes filter networks for attenuation of a broad frequency range including the entire range of frequencies contributing to the feedback. A combination of high order low-pass and high-pass filters is used to pass fundamental and second order components of a selected instrument, while attenuating the undesired feedback frequencies as well as extremely low range frequencies capable of damaging a speaker. A pair of passbands is provided, and a pair of frequency bands is suppressed, the two pairs providing alternate attenuation and pass-bands. Active filters having operational amplifiers and frequency selective circuits are used, along with buffering and summing circuits, to attain the desired frequency characteristic.
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Inventors:
AARU MAIKERU ONIIRU
Application Number:
JP9206782A
Publication Date:
February 02, 1983
Filing Date:
May 28, 1982
Export Citation:
Assignee:
PIIBUEI ELECTONICS CORP
International Classes:
H04R3/02; H04R27/00; H04R29/00; H04R3/04; (IPC1-7): H04R3/02; H04R27/00; H04R29/00
Attorney, Agent or Firm:
Aoyama Aoi