Title:
DIGITAL FILTER
Document Type and Number:
WIPO Patent Application WO/2006/054717
Kind Code:
A1
Abstract:
[PROBLEMS] To provide an IIR type of digital filter having a simple structure. [MEANS FOR SOLVING PROBLEMS] An IIR type of digital filter (5) is constituted by a calculator (6) for adding a delay signal (D(z)) to an input signal (X(x)) and subtracting an output signal (Y(z)) from the input signal (X(x)); a delay element (7) for delaying an output (C(z)) from the calculator (6) by one sample to generate the delay signal (D(z)); and by a single multiplier (8) for multiplying the delay signal (D(z)) by a filter coefficient (k) to output a result of that multiplication as the output signal (Y(z)). In this way, the number of multipliers for performing multiplications is reduced to achieve a simple structure.
Inventors:
OHASHI TORU (JP)
Application Number:
PCT/JP2005/021284
Publication Date:
May 26, 2006
Filing Date:
November 18, 2005
Export Citation:
Assignee:
PIONEER CORP (JP)
OHASHI TORU (JP)
OHASHI TORU (JP)
International Classes:
H03H17/04
Foreign References:
JPS6081916A | 1985-05-10 | |||
JPH0661790A | 1994-03-04 | |||
JPH07282035A | 1995-10-27 |
Attorney, Agent or Firm:
Kobashi, Nobukiyo (6-10 Ebisuminami 1-chome, Shibuya-k, Tokyo 22, JP)
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