Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
ADAPTIVE EQUALIZER, ECHO CANCELER AND ACTIVE NOISE CONTROL APPARATUS
Document Type and Number:
Japanese Patent JP2011205533
Kind Code:
A
Abstract:

To obtain an adaptive equalizer, capable of preventing identification accuracy of a linear element from being reduced by the existence of a non-linear element in a transfer function.

In a first signal converter 101 to a second signal converter 106, a filter coefficient represented in a frequency domain is held, and based on the filter coefficient, adaptive learning is performed from an input signal of a target unknown system and an output signal of the unknown system, to identify a transfer function of the unknown system. A frequency weight processor 107 multiplies the filter coefficient or the updated amount of the filter coefficient in a filter processor 102 with a weight, on the basis of non-linear distortion characteristic information about non-linear distortion characteristics of the unknown system held in a non-linear distortion characteristic information holder 108.


Inventors:
YANO ATSUHITO
Application Number:
JP2010072559A
Publication Date:
October 13, 2011
Filing Date:
March 26, 2010
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
H03H21/00; H04B3/23; H04R3/02
Attorney, Agent or Firm:
Hideaki Tazawa
Hamada Hatsune