Title:
NOISE CONTROLLER
Document Type and Number:
Japanese Patent JPH08263072
Kind Code:
A
Abstract:
PURPOSE: To miniaturize a noise controller and to prevent the erroneous transfer of the data.
CONSTITUTION: In the noise controller provided with a speaker 4 outputting a cancel sound of a vehicle noise and a microphone 5 for detecting an interference result between the noise and the cancel sound as an error signal and feeding it back, a volatile memory 73 storing the transfer characteristic data of the sound between the speaker 4 and the microphone 5 is provided. A digital part 61 incorporates the volatile memory 73, and is provided with a standby mode by which a clock is stopped from the outside, and is formed to a DSP processing a digital signal, and the cancel sound is formed.
Inventors:
ISHIKAWA OSAMU
NAGAMI MASAAKI
SAKIYAMA KAZUHIRO
IWAMOTO SHINICHI
NAGAMI MASAAKI
SAKIYAMA KAZUHIRO
IWAMOTO SHINICHI
Application Number:
JP6954595A
Publication Date:
October 11, 1996
Filing Date:
March 28, 1995
Export Citation:
Assignee:
FUJITSU TEN LTD
International Classes:
B60R11/02; F01N1/00; G10K11/16; G10K11/178; (IPC1-7): G10K11/178; B60R11/02; F01N1/00; G10K11/16
Attorney, Agent or Firm:
Takashi Ishida (3 others)