KR970066881A - Filtering method of subband filter - Google Patents
Filtering method of subband filter Download PDFInfo
- Publication number
- KR970066881A KR970066881A KR1019960008051A KR19960008051A KR970066881A KR 970066881 A KR970066881 A KR 970066881A KR 1019960008051 A KR1019960008051 A KR 1019960008051A KR 19960008051 A KR19960008051 A KR 19960008051A KR 970066881 A KR970066881 A KR 970066881A
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- KR
- South Korea
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- filtering method
- calculating
- variable
- subband filter
- following equation
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Abstract
본 발명은 서브밴드 필터의 필터링 방법에 관한 것으로, 종래의 필터는 메모리의 사이즈가 크고 계산량이 많은 문제점이 있었다. 본 발명이 이러한 종래의 문제점을 해결하기 위해 서브밴드 필터 구성시 최적화된 알고리즘과 계산량을 도출하여 메모리의 삭제 또는 메모리 사이즈를 줄일 수 있는 서브밴드 필터의 필터링 방법을 창안한 것이다.The present invention relates to a filtering method of a subband filter, and a conventional filter has a problem that a size of a memory is large and a calculation amount is large. In order to solve such a conventional problem, the present invention has been devised a filtering method of a sub-band filter which can reduce memory size or memory by deriving an optimized algorithm and calculation amount in a sub-band filter configuration.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.
제1도는 일반적인 서브밴드 필터의 개략적인 블럭 구성도, 제3도는 램 RAM_V를 축소하기 위한 어드레싱표, 제4도는 메모리 제거 및 메모리사이즈 축소 후의 서브밴드 필터의 필터링 동작 흐름도.Fig. 1 is a schematic block diagram of a general subband filter, Fig. 3 is an addressing table for reducing ram RAM_V, Fig. 4 is a flowchart of filtering operation of a subband filter after memory removal and memory size reduction.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960008051A KR970066881A (en) | 1996-03-23 | 1996-03-23 | Filtering method of subband filter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960008051A KR970066881A (en) | 1996-03-23 | 1996-03-23 | Filtering method of subband filter |
Publications (1)
Publication Number | Publication Date |
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KR970066881A true KR970066881A (en) | 1997-10-13 |
Family
ID=66215799
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1019960008051A KR970066881A (en) | 1996-03-23 | 1996-03-23 | Filtering method of subband filter |
Country Status (1)
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KR (1) | KR970066881A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100913413B1 (en) * | 2002-04-04 | 2009-08-21 | 엘지전자 주식회사 | Parallel processing method for synthesis filterbank |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5329587A (en) * | 1993-03-12 | 1994-07-12 | At&T Bell Laboratories | Low-delay subband adaptive filter |
EP0661827A2 (en) * | 1993-12-29 | 1995-07-05 | Hewlett-Packard Company | Subband filtering using inverse discrete cosine transform |
EP0663735A2 (en) * | 1994-01-14 | 1995-07-19 | Lg Electronics Inc. | Synthesis subband filter |
JPH0854896A (en) * | 1994-08-10 | 1996-02-27 | Toshiba Corp | Coded voice decoder |
-
1996
- 1996-03-23 KR KR1019960008051A patent/KR970066881A/en not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5329587A (en) * | 1993-03-12 | 1994-07-12 | At&T Bell Laboratories | Low-delay subband adaptive filter |
EP0661827A2 (en) * | 1993-12-29 | 1995-07-05 | Hewlett-Packard Company | Subband filtering using inverse discrete cosine transform |
EP0663735A2 (en) * | 1994-01-14 | 1995-07-19 | Lg Electronics Inc. | Synthesis subband filter |
JPH0854896A (en) * | 1994-08-10 | 1996-02-27 | Toshiba Corp | Coded voice decoder |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100913413B1 (en) * | 2002-04-04 | 2009-08-21 | 엘지전자 주식회사 | Parallel processing method for synthesis filterbank |
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