Title:
DIGITAL FILTER, DESIGN METHOD THEREOF, DESIGN DEVICE, AND DIGITAL FILTER DESIGN PROGRAM
Document Type and Number:
WIPO Patent Application WO/2004/102800
Kind Code:
A1
Abstract:
An original filter is connected to an adjustment filter in the longitudinal way. The original filter has a first filter coefficient of a symmetric numeric string. The adjustment filter has a contact point at a position where the maximum value is acquired in the original filter frequency amplitude characteristic A and has a symmetric second filter coefficient realizing the frequency amplitude characteristic B having the minimum value at the contact point. By executing a convolution calculation of the first filter coefficient and the second filter coefficient, it is possible to design a desired filter coefficient.
More Like This:
Inventors:
KOYANAGI YUKIO (JP)
Application Number:
PCT/JP2004/003668
Publication Date:
November 25, 2004
Filing Date:
March 18, 2004
Export Citation:
Assignee:
NEURO SOLUTION CORP (JP)
KOYANAGI YUKIO (JP)
KOYANAGI YUKIO (JP)
International Classes:
H03H17/06; (IPC1-7): H03H17/06
Domestic Patent References:
| WO2003023960A1 | 2003-03-20 |
Foreign References:
| JP2002368584A | 2002-12-20 |
Attorney, Agent or Firm:
Tachibana, Kazuyuki (Oaza-Shimoshingashi Kawagoe-shi, Saitama, JP)
Download PDF: