HK1114994A1 - Apparatus and method for synthesizing three output channels using two input channels - Google Patents
Apparatus and method for synthesizing three output channels using two input channelsInfo
- Publication number
- HK1114994A1 HK1114994A1 HK08110460.2A HK08110460A HK1114994A1 HK 1114994 A1 HK1114994 A1 HK 1114994A1 HK 08110460 A HK08110460 A HK 08110460A HK 1114994 A1 HK1114994 A1 HK 1114994A1
- Authority
- HK
- Hong Kong
- Prior art keywords
- channels
- speaker
- signal components
- input channels
- synthesizing
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S5/00—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Stereophonic System (AREA)
- Circuit For Audible Band Transducer (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Time-Division Multiplex Systems (AREA)
- Harvester Elements (AREA)
Abstract
For synthesizing at least three output channels using two stereo input channels, the stereo input channels are analyzed (15) to detect signal components occurring in both input channels. A signal generator (16) is operative to introduce at least a part of the detected signal components into the second channel (12b) associated with a second speaker in an intended speaker scheme, which is positioned between a first and a third speaker in the speaker scheme. When, however, feeding of the complete detected signal components would result in a clipping situation, then only a part of the detected signal components is fed into the second channel as a real center channel and the remainder is located in the first and third channels as a phantom center channel.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2005/013738 WO2007071270A1 (en) | 2005-12-20 | 2005-12-20 | Apparatus and method for synthesizing three output channels using two input channels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| HK1114994A1 true HK1114994A1 (en) | 2008-11-14 |
Family
ID=37027614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| HK08110460.2A HK1114994A1 (en) | 2005-12-20 | 2008-09-22 | Apparatus and method for synthesizing three output channels using two input channels |
Country Status (15)
| Country | Link |
|---|---|
| EP (1) | EP1964442B1 (en) |
| JP (1) | JP4792086B2 (en) |
| KR (1) | KR100994294B1 (en) |
| CN (1) | CN101341792B (en) |
| AT (1) | ATE458364T1 (en) |
| AU (1) | AU2005339439B2 (en) |
| BR (1) | BRPI0520802B1 (en) |
| CA (1) | CA2632394C (en) |
| DE (1) | DE602005019484D1 (en) |
| ES (1) | ES2340784T3 (en) |
| HK (1) | HK1114994A1 (en) |
| IL (1) | IL191688A (en) |
| NO (1) | NO339830B1 (en) |
| PL (1) | PL1964442T3 (en) |
| WO (1) | WO2007071270A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7965848B2 (en) * | 2006-03-29 | 2011-06-21 | Dolby International Ab | Reduced number of channels decoding |
| JP5251731B2 (en) * | 2009-05-29 | 2013-07-31 | ヤマハ株式会社 | Mixing console and program |
| US8000485B2 (en) * | 2009-06-01 | 2011-08-16 | Dts, Inc. | Virtual audio processing for loudspeaker or headphone playback |
| JP5418357B2 (en) * | 2010-03-26 | 2014-02-19 | ヤマハ株式会社 | Digital mixer and program |
| JP5929301B2 (en) * | 2012-02-23 | 2016-06-01 | オンキヨー株式会社 | Time difference correction method, audio signal processing device, playback device, and program |
| EP3253079B1 (en) * | 2012-08-31 | 2023-04-05 | Dolby Laboratories Licensing Corporation | System for rendering and playback of object based audio in various listening environments |
| CN104376857A (en) * | 2013-08-16 | 2015-02-25 | 联想(北京)有限公司 | Information processing method and electronic equipment |
| KR20160072131A (en) * | 2013-10-02 | 2016-06-22 | 슈트로밍스위스 게엠베하 | Method and apparatus for downmixing a multichannel signal and for upmixing a downmix signal |
| CN105828271B (en) * | 2015-01-09 | 2019-07-05 | 南京青衿信息科技有限公司 | A method of two channel sound signals are converted into three sound channel signals |
| US11825026B1 (en) * | 2020-12-10 | 2023-11-21 | Hear360 Inc. | Spatial audio virtualization for conference call applications |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5770000A (en) * | 1980-10-20 | 1982-04-30 | Matsushita Electric Ind Co Ltd | Stereo playback device |
| JPH05236599A (en) * | 1992-02-21 | 1993-09-10 | Clarion Co Ltd | Acoustic reproducing device with three speakers |
| CN1149901C (en) * | 1997-12-08 | 2004-05-12 | 汤姆森许可公司 | Peak to peak signal detector for audio system |
| US7298852B2 (en) * | 2001-07-11 | 2007-11-20 | American Technology Corporation | Dynamic power sharing in a multi-channel sound system |
| CA2414501A1 (en) * | 2000-07-11 | 2002-01-17 | American Technology Corporation | Dynamic power sharing in a multi-channel sound system |
| CN1270583C (en) * | 2002-06-19 | 2006-08-16 | 普诚科技股份有限公司 | Method for changing from double track to multi-track and acoustic treater |
-
2005
- 2005-12-20 ES ES05822900T patent/ES2340784T3/en active Active
- 2005-12-20 CN CN200580052379XA patent/CN101341792B/en active Active
- 2005-12-20 CA CA2632394A patent/CA2632394C/en active Active
- 2005-12-20 PL PL05822900T patent/PL1964442T3/en unknown
- 2005-12-20 AU AU2005339439A patent/AU2005339439B2/en active Active
- 2005-12-20 WO PCT/EP2005/013738 patent/WO2007071270A1/en active Application Filing
- 2005-12-20 EP EP05822900A patent/EP1964442B1/en active Active
- 2005-12-20 KR KR1020087014463A patent/KR100994294B1/en active IP Right Grant
- 2005-12-20 BR BRPI0520802-5A patent/BRPI0520802B1/en active IP Right Grant
- 2005-12-20 JP JP2008546134A patent/JP4792086B2/en active Active
- 2005-12-20 AT AT05822900T patent/ATE458364T1/en active
- 2005-12-20 DE DE602005019484T patent/DE602005019484D1/en active Active
-
2008
- 2008-05-25 IL IL191688A patent/IL191688A/en active IP Right Grant
- 2008-07-17 NO NO20083188A patent/NO339830B1/en unknown
- 2008-09-22 HK HK08110460.2A patent/HK1114994A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AU2005339439B2 (en) | 2010-07-22 |
| CN101341792A (en) | 2009-01-07 |
| AU2005339439A1 (en) | 2007-06-28 |
| KR100994294B1 (en) | 2010-11-12 |
| ES2340784T3 (en) | 2010-06-09 |
| CA2632394A1 (en) | 2007-06-28 |
| PL1964442T3 (en) | 2010-07-30 |
| WO2007071270A1 (en) | 2007-06-28 |
| BRPI0520802B1 (en) | 2019-04-16 |
| BRPI0520802A2 (en) | 2009-06-23 |
| IL191688A0 (en) | 2008-12-29 |
| ATE458364T1 (en) | 2010-03-15 |
| EP1964442A1 (en) | 2008-09-03 |
| DE602005019484D1 (en) | 2010-04-01 |
| KR20080070066A (en) | 2008-07-29 |
| CN101341792B (en) | 2010-08-18 |
| JP2009520419A (en) | 2009-05-21 |
| IL191688A (en) | 2012-05-31 |
| NO20083188L (en) | 2008-07-17 |
| EP1964442B1 (en) | 2010-02-17 |
| NO339830B1 (en) | 2017-02-06 |
| JP4792086B2 (en) | 2011-10-12 |
| CA2632394C (en) | 2013-07-16 |
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