JP2001077697A5 - - Google Patents
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- JP2001077697A5 JP2001077697A5 JP1999253495A JP25349599A JP2001077697A5 JP 2001077697 A5 JP2001077697 A5 JP 2001077697A5 JP 1999253495 A JP1999253495 A JP 1999253495A JP 25349599 A JP25349599 A JP 25349599A JP 2001077697 A5 JP2001077697 A5 JP 2001077697A5
- Authority
- JP
- Japan
- Prior art keywords
- signal sequence
- numbered
- filtering
- frequency band
- predetermined frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000000034 method Methods 0.000 claims 6
- 238000001914 filtration Methods 0.000 claims 5
- 230000003044 adaptive Effects 0.000 claims 1
- 238000003672 processing method Methods 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
Claims (1)
入力信号系列を奇数番信号系列と偶数番信号系列に分離する信号系列分離工程と、
前記奇数番信号系列或いは偶数番信号系列にリフティング処理を用いたフィルタ処理を施すことにより、所定の周波数帯域の係数信号列を生成する第１のフィルタ工程と、
前記リフティング処理される信号系列に対して、前記第１のフィルタ工程で用いるリフティング処理とは異なるフィルタ処理を施すことにより、前記所定の周波数帯域の係数信号列を生成する第２のフィルタ工程と、
前記第１、第２フィルタ工程で得られる複数の係数信号列のいずれか一方を適応的に選択して出力する適応的選択工程とを具備することを特徴とするディジタル信号処理方法。A digital signal processing method for obtaining a signal in a predetermined frequency band from an input signal sequence,
A signal sequence separation step of separating an input signal sequence into an odd-numbered signal sequence and an even-numbered signal sequence,
A first filtering step of generating a coefficient signal sequence in a predetermined frequency band by performing a filtering process using a lifting process on the odd-numbered signal sequence or the even-numbered signal sequence;
A second filtering step of generating a coefficient signal sequence in the predetermined frequency band by performing a filtering process different from the lifting process used in the first filtering process on the signal sequence subjected to the lifting process ;
An adaptive selection step of adaptively selecting and outputting one of a plurality of coefficient signal sequences obtained in the first and second filter steps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25349599A JP3710342B2 (en) | 1999-09-07 | 1999-09-07 | Digital signal processing apparatus and method, and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25349599A JP3710342B2 (en) | 1999-09-07 | 1999-09-07 | Digital signal processing apparatus and method, and storage medium |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2001077697A JP2001077697A (en) | 2001-03-23 |
| JP2001077697A5 true JP2001077697A5 (en) | 2004-10-28 |
| JP3710342B2 JP3710342B2 (en) | 2005-10-26 |
Family
ID=17252181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25349599A Expired - Fee Related JP3710342B2 (en) | 1999-09-07 | 1999-09-07 | Digital signal processing apparatus and method, and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3710342B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10129240A1 (en) | 2001-06-18 | 2003-01-02 | Fraunhofer Ges Forschung | Method and device for processing discrete-time audio samples |
| JP3796432B2 (en) | 2001-10-31 | 2006-07-12 | キヤノン株式会社 | Filter processing apparatus and filter processing method |
| FR2849329A1 (en) * | 2002-12-20 | 2004-06-25 | France Telecom | Video sequence successive image coding having an image mesh divided and wavelet coded with two wavelet types applied distinct image zones |
| TW200746655A (en) * | 2005-11-18 | 2007-12-16 | Sony Corp | Encoding device and method, decoding device and method, and transmission system |
| JP4254867B2 (en) * | 2007-01-31 | 2009-04-15 | ソニー株式会社 | Information processing apparatus and method, program, and recording medium |
-
1999
- 1999-09-07 JP JP25349599A patent/JP3710342B2/en not_active Expired - Fee Related
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