Title:
METHOD FOR DESIGNING DIGITAL FILTER
Document Type and Number:
Japanese Patent JP3221076
Kind Code:
B2
Abstract:
PURPOSE: To reduce the number of program commands when an arithmetic amount is reduced by software and to decrease the circuitry when reduced by hardware in a real-time digital signal processing in such as picture, voice, acoustic signals.
CONSTITUTION: The coefficient having an approximate value having the minimum error to reduce the arithmetic amount and satisfying the required filter characteristic when the minimum arithmetic redundant binary expression is performed for the set of coefficients obtained by the normal coefficient design of a digital filter is replaced and corrected. The operation is repeated until the coefficient set of the digital filter with less arithmetic amount can be obtaind.
Inventors:
Seiichiro Iwase
Atsushi Kikuchi
Atsushi Kikuchi
Application Number:
JP19111292A
Publication Date:
October 22, 2001
Filing Date:
July 17, 1992
Export Citation:
Assignee:
ソニー株式会社
International Classes:
H03H21/00; H03H17/00; H03H17/02; H03H17/04; (IPC1-7): H03H17/02
Domestic Patent References:
| JP4158479A | ||||
| JP4169974A | ||||
| JP467227A |
Attorney, Agent or Firm:
Hidemori Matsukuma