CA2392602A1 - Method and apparatus for deriving at least one audio signal from two or more input audio signals - Google Patents
Method and apparatus for deriving at least one audio signal from two or more input audio signals Download PDFInfo
- Publication number
- CA2392602A1 CA2392602A1 CA002392602A CA2392602A CA2392602A1 CA 2392602 A1 CA2392602 A1 CA 2392602A1 CA 002392602 A CA002392602 A CA 002392602A CA 2392602 A CA2392602 A CA 2392602A CA 2392602 A1 CA2392602 A1 CA 2392602A1
- Authority
- CA
- Canada
- Prior art keywords
- beta
- signals
- antidominant
- alpha
- signal
- 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.)
- Abandoned
Links
- 230000005236 sound signal Effects 0.000 title claims abstract description 144
- 238000000034 method Methods 0.000 title claims description 25
- 239000011159 matrix material Substances 0.000 claims abstract description 152
- 230000003044 adaptive effect Effects 0.000 abstract description 10
- 230000006870 function Effects 0.000 description 87
- 230000008859 change Effects 0.000 description 25
- 238000010586 diagram Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 8
- 230000004044 response Effects 0.000 description 7
- 238000009795 derivation Methods 0.000 description 6
- 230000014509 gene expression Effects 0.000 description 6
- 238000013459 approach Methods 0.000 description 5
- 125000004122 cyclic group Chemical group 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000002238 attenuated effect Effects 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 230000001934 delay Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- SRVJKTDHMYAMHA-WUXMJOGZSA-N thioacetazone Chemical compound CC(=O)NC1=CC=C(\C=N\NC(N)=S)C=C1 SRVJKTDHMYAMHA-WUXMJOGZSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 229940102743 mag 64 Drugs 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 238000012886 linear function Methods 0.000 description 1
- MGIUUAHJVPPFEV-ABXDCCGRSA-N magainin ii Chemical compound C([C@H](NC(=O)[C@H](CCCCN)NC(=O)CNC(=O)[C@@H](NC(=O)CN)[C@@H](C)CC)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CC=1NC=NC=1)C(=O)N[C@@H](CO)C(=O)N[C@@H](C)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)NCC(=O)N[C@@H](CCCCN)C(=O)N[C@@H](C)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](C(C)C)C(=O)NCC(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CCSC)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CO)C(O)=O)C1=CC=CC=C1 MGIUUAHJVPPFEV-ABXDCCGRSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
- H04S3/02—Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Acoustics & Sound (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Mathematical Physics (AREA)
- Pure & Applied Mathematics (AREA)
- Algebra (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Stereophonic System (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Analogue/Digital Conversion (AREA)
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
- Stereo-Broadcasting Methods (AREA)
- Toys (AREA)
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US45481099A | 1999-12-03 | 1999-12-03 | |
| US09/454,810 | 1999-12-03 | ||
| US09/532,711 US6920223B1 (en) | 1999-12-03 | 2000-03-22 | Method for deriving at least three audio signals from two input audio signals |
| US09/532,711 | 2000-03-22 | ||
| US09/602,585 US6970567B1 (en) | 1999-12-03 | 2000-06-21 | Method and apparatus for deriving at least one audio signal from two or more input audio signals |
| US09/602,585 | 2000-06-21 | ||
| PCT/US2000/032537 WO2001041505A1 (en) | 1999-12-03 | 2000-11-29 | Method and apparatus for deriving at least one audio signal from two or more input audio signals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2392602A1 true CA2392602A1 (en) | 2001-06-07 |
Family
ID=27412620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002392602A Abandoned CA2392602A1 (en) | 1999-12-03 | 2000-11-29 | Method and apparatus for deriving at least one audio signal from two or more input audio signals |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US6970567B1 (enExample) |
| EP (1) | EP1234485B1 (enExample) |
| JP (1) | JP2003515771A (enExample) |
| CN (1) | CN1250046C (enExample) |
| AT (1) | ATE301384T1 (enExample) |
| AU (1) | AU784083B2 (enExample) |
| BR (1) | BR0016741A (enExample) |
| CA (1) | CA2392602A1 (enExample) |
| DE (1) | DE60021756T2 (enExample) |
| HK (1) | HK1054838B (enExample) |
| MX (1) | MXPA02005520A (enExample) |
| TW (1) | TW506227B (enExample) |
| WO (1) | WO2001041505A1 (enExample) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4624643B2 (ja) | 2000-08-31 | 2011-02-02 | ドルビー・ラボラトリーズ・ライセンシング・コーポレーション | オーディオ・マトリックス・デコーディング装置に関する方法 |
| US7003467B1 (en) | 2000-10-06 | 2006-02-21 | Digital Theater Systems, Inc. | Method of decoding two-channel matrix encoded audio to reconstruct multichannel audio |
| CA2992125C (en) | 2004-03-01 | 2018-09-25 | Dolby Laboratories Licensing Corporation | Reconstructing audio signals with multiple decorrelation techniques and differentially coded parameters |
| MXPA06011361A (es) * | 2004-04-05 | 2007-01-16 | Koninkl Philips Electronics Nv | Codificador de canales multiples. |
| JP4594681B2 (ja) * | 2004-09-08 | 2010-12-08 | ソニー株式会社 | 音声信号処理装置および音声信号処理方法 |
| JP4580210B2 (ja) * | 2004-10-19 | 2010-11-10 | ソニー株式会社 | 音声信号処理装置および音声信号処理方法 |
| US8111830B2 (en) * | 2005-12-19 | 2012-02-07 | Samsung Electronics Co., Ltd. | Method and apparatus to provide active audio matrix decoding based on the positions of speakers and a listener |
| FR2916078A1 (fr) * | 2007-05-10 | 2008-11-14 | France Telecom | Procede de codage et decodage audio, codeur audio, decodeur audio et programmes d'ordinateur associes |
| US8315398B2 (en) | 2007-12-21 | 2012-11-20 | Dts Llc | System for adjusting perceived loudness of audio signals |
| TWI424755B (zh) * | 2008-01-11 | 2014-01-21 | Dolby Lab Licensing Corp | 矩陣解碼器 |
| TWI449442B (zh) | 2009-01-14 | 2014-08-11 | Dolby Lab Licensing Corp | 用於無回授之頻域主動矩陣解碼的方法與系統 |
| US8538042B2 (en) | 2009-08-11 | 2013-09-17 | Dts Llc | System for increasing perceived loudness of speakers |
| WO2013094135A1 (ja) | 2011-12-19 | 2013-06-27 | パナソニック株式会社 | 音分離装置、および音分離方法 |
| US9312829B2 (en) | 2012-04-12 | 2016-04-12 | Dts Llc | System for adjusting loudness of audio signals in real time |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4589129A (en) | 1984-02-21 | 1986-05-13 | Kintek, Inc. | Signal decoding system |
| US4799260A (en) | 1985-03-07 | 1989-01-17 | Dolby Laboratories Licensing Corporation | Variable matrix decoder |
| US5504819A (en) | 1990-06-08 | 1996-04-02 | Harman International Industries, Inc. | Surround sound processor with improved control voltage generator |
| US5172415A (en) | 1990-06-08 | 1992-12-15 | Fosgate James W | Surround processor |
| US5428687A (en) | 1990-06-08 | 1995-06-27 | James W. Fosgate | Control voltage generator multiplier and one-shot for integrated surround sound processor |
| US5295189A (en) | 1990-06-08 | 1994-03-15 | Fosgate James W | Control voltage generator for surround sound processor |
| US5625696A (en) | 1990-06-08 | 1997-04-29 | Harman International Industries, Inc. | Six-axis surround sound processor with improved matrix and cancellation control |
| JP3472046B2 (ja) | 1996-08-23 | 2003-12-02 | 株式会社国際電気通信基礎技術研究所 | 信号分離装置 |
| US5862228A (en) | 1997-02-21 | 1999-01-19 | Dolby Laboratories Licensing Corporation | Audio matrix encoding |
| US6198826B1 (en) | 1997-05-19 | 2001-03-06 | Qsound Labs, Inc. | Qsound surround synthesis from stereo |
-
2000
- 2000-06-21 US US09/602,585 patent/US6970567B1/en not_active Expired - Fee Related
- 2000-11-22 TW TW089124809A patent/TW506227B/zh not_active IP Right Cessation
- 2000-11-29 BR BR0016741-0A patent/BR0016741A/pt not_active Application Discontinuation
- 2000-11-29 DE DE60021756T patent/DE60021756T2/de not_active Expired - Fee Related
- 2000-11-29 CA CA002392602A patent/CA2392602A1/en not_active Abandoned
- 2000-11-29 AT AT00983809T patent/ATE301384T1/de not_active IP Right Cessation
- 2000-11-29 JP JP2001541299A patent/JP2003515771A/ja not_active Withdrawn
- 2000-11-29 HK HK03104927.7A patent/HK1054838B/zh not_active IP Right Cessation
- 2000-11-29 AU AU20518/01A patent/AU784083B2/en not_active Ceased
- 2000-11-29 CN CNB008165629A patent/CN1250046C/zh not_active Expired - Fee Related
- 2000-11-29 MX MXPA02005520A patent/MXPA02005520A/es active IP Right Grant
- 2000-11-29 WO PCT/US2000/032537 patent/WO2001041505A1/en not_active Ceased
- 2000-11-29 EP EP00983809A patent/EP1234485B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP1234485A1 (en) | 2002-08-28 |
| CN1250046C (zh) | 2006-04-05 |
| DE60021756D1 (de) | 2005-09-08 |
| ATE301384T1 (de) | 2005-08-15 |
| WO2001041505A1 (en) | 2001-06-07 |
| DE60021756T2 (de) | 2006-04-20 |
| EP1234485B1 (en) | 2005-08-03 |
| AU784083B2 (en) | 2006-02-02 |
| CN1402957A (zh) | 2003-03-12 |
| BR0016741A (pt) | 2002-09-03 |
| TW506227B (en) | 2002-10-11 |
| MXPA02005520A (es) | 2002-10-23 |
| HK1054838B (zh) | 2006-09-08 |
| US6970567B1 (en) | 2005-11-29 |
| JP2003515771A (ja) | 2003-05-07 |
| AU2051801A (en) | 2001-06-12 |
| HK1054838A1 (en) | 2003-12-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1362499B1 (en) | Method for apparatus for audio matrix decoding | |
| CA2392601C (en) | Method for deriving at least three audio signals from two input audio signals | |
| US5796844A (en) | Multichannel active matrix sound reproduction with maximum lateral separation | |
| EP1234485B1 (en) | Method and apparatus for deriving at least one audio signal from two or more input audio signals | |
| US5870480A (en) | Multichannel active matrix encoder and decoder with maximum lateral separation | |
| US6920223B1 (en) | Method for deriving at least three audio signals from two input audio signals | |
| US5757927A (en) | Surround sound apparatus | |
| AU2001288528A1 (en) | Method for apparatus for audio matrix decoding | |
| US20020071574A1 (en) | Phase shifting audio signal combining | |
| US10764704B2 (en) | Multi-channel subband spatial processing for loudspeakers | |
| US6587565B1 (en) | System for improving a spatial effect of stereo sound or encoded sound | |
| AU9302698A (en) | 5-2-5 matrix encoder and decoder system | |
| WO1993018630A1 (en) | Surround sound apparatus | |
| Gundry | A new active matrix decoder for surround sound | |
| EP1964443A2 (en) | Low-complexity audio matrix decoder | |
| KR20020065548A (ko) | 2개 이상의 입력 오디오 신호들로부터 적어도 1개의오디오 신호를 유도하는 방법 및 장치 | |
| GB1586271A (en) | 2-4 channel decoding matrix for regenerating quadrophonic signals | |
| HK1069063B (en) | Method for apparatus for audio matrix decoding |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |