DK137110C - - Google Patents
Info
- Publication number
- DK137110C DK137110C DK253273A DK253273A DK137110C DK 137110 C DK137110 C DK 137110C DK 253273 A DK253273 A DK 253273A DK 253273 A DK253273 A DK 253273A DK 137110 C DK137110 C DK 137110C
- Authority
- DK
- Denmark
Links
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)
- Stereophonic Arrangements (AREA)
- Stereo-Broadcasting Methods (AREA)
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
- Circuit For Audible Band Transducer (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US00251742A US3824342A (en) | 1972-05-09 | 1972-05-09 | Omnidirectional sound field reproducing system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DK137110B DK137110B (da) | 1978-01-16 |
| DK137110C true DK137110C (xx) | 1978-06-19 |
Family
ID=22953214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK253273AA DK137110B (da) | 1972-05-09 | 1973-05-08 | Lydgengivelsesapparat. |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US3824342A (xx) |
| JP (1) | JPS5215201B2 (xx) |
| AT (1) | AT350294B (xx) |
| BR (1) | BR7303322D0 (xx) |
| CA (1) | CA976090A (xx) |
| CH (1) | CH565494A5 (xx) |
| DD (1) | DD104673A5 (xx) |
| DE (1) | DE2317124A1 (xx) |
| DK (1) | DK137110B (xx) |
| ES (1) | ES414567A1 (xx) |
| FR (1) | FR2183974B1 (xx) |
| GB (1) | GB1432153A (xx) |
| IT (1) | IT984179B (xx) |
| NL (1) | NL7306404A (xx) |
| SE (1) | SE378969B (xx) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3970788A (en) * | 1971-10-06 | 1976-07-20 | Cooper Duane H | Monaural and stereo compatible multidirectional sound matrixing |
| GB1494751A (en) * | 1974-03-26 | 1977-12-14 | Nat Res Dev | Sound reproduction systems |
| US3940559A (en) * | 1974-04-18 | 1976-02-24 | Cbs Inc. | Compatible four channel recording and reproducing system |
| GB1512514A (en) * | 1974-07-12 | 1978-06-01 | Nat Res Dev | Microphone assemblies |
| JPS5187002A (en) * | 1975-01-29 | 1976-07-30 | Nippon Telegraph & Telephone | 4 chanerusutereohoshiki |
| JPS5230402A (en) * | 1975-09-04 | 1977-03-08 | Victor Co Of Japan Ltd | Multichannel stereo system |
| US4074084A (en) * | 1975-11-05 | 1978-02-14 | Berg Johannes C M Van Den | Method and apparatus for receiving sound intended for stereophonic reproduction |
| US4095049A (en) * | 1976-03-15 | 1978-06-13 | National Research Development Corporation | Non-rotationally-symmetric surround-sound encoding system |
| GB1548674A (en) * | 1976-07-01 | 1979-07-18 | Nat Res Dev | Sound reproduction systems |
| US4236039A (en) * | 1976-07-19 | 1980-11-25 | National Research Development Corporation | Signal matrixing for directional reproduction of sound |
| US4392019A (en) * | 1980-12-19 | 1983-07-05 | Independent Broadcasting Authority | Surround sound system |
| HU190912B (en) * | 1983-09-07 | 1986-12-28 | Polyak,Gabor,Hu | Method and apparatus for making stereoscopic sound effects |
| US6041127A (en) * | 1997-04-03 | 2000-03-21 | Lucent Technologies Inc. | Steerable and variable first-order differential microphone array |
| ITMI20020566A1 (it) * | 2002-03-18 | 2003-09-18 | Daniele Ramenzoni | Dispositivo per captare movimenti anche piccoli nell'aria e nei fluidi adatto per applicazioni cibernetiche e di laboratorio come trasduttor |
| US8130977B2 (en) * | 2005-12-27 | 2012-03-06 | Polycom, Inc. | Cluster of first-order microphones and method of operation for stereo input of videoconferencing system |
| TWI498014B (zh) * | 2012-07-11 | 2015-08-21 | Univ Nat Cheng Kung | 建立最佳化揚聲器聲場之方法 |
| US10631085B2 (en) | 2018-05-07 | 2020-04-21 | Crestron Electronics, Inc. | Microphone array system with Ethernet connection |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3746792A (en) * | 1968-01-11 | 1973-07-17 | P Scheiber | Multidirectional sound system |
| GB1359509A (en) * | 1970-06-15 | 1974-07-10 | Scheiber P | Decoder apparatus for use in a multidirectional sound system |
-
1972
- 1972-05-09 US US00251742A patent/US3824342A/en not_active Expired - Lifetime
-
1973
- 1973-04-05 DE DE2317124A patent/DE2317124A1/de not_active Withdrawn
- 1973-04-24 CA CA169,399A patent/CA976090A/en not_active Expired
- 1973-04-30 IT IT23574/73A patent/IT984179B/it active
- 1973-05-07 CH CH646473A patent/CH565494A5/xx not_active IP Right Cessation
- 1973-05-07 DD DD170651A patent/DD104673A5/xx unknown
- 1973-05-08 GB GB2174673A patent/GB1432153A/en not_active Expired
- 1973-05-08 NL NL7306404A patent/NL7306404A/xx not_active Application Discontinuation
- 1973-05-08 BR BR3322/73A patent/BR7303322D0/pt unknown
- 1973-05-08 JP JP48051041A patent/JPS5215201B2/ja not_active Expired
- 1973-05-08 DK DK253273AA patent/DK137110B/da unknown
- 1973-05-08 SE SE7306449A patent/SE378969B/xx unknown
- 1973-05-09 FR FR7316629A patent/FR2183974B1/fr not_active Expired
- 1973-05-09 AT AT410273A patent/AT350294B/de not_active IP Right Cessation
- 1973-05-09 ES ES414567A patent/ES414567A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| ES414567A1 (es) | 1976-02-01 |
| DE2317124A1 (de) | 1973-11-22 |
| JPS4955301A (xx) | 1974-05-29 |
| SE378969B (xx) | 1975-09-15 |
| AT350294B (de) | 1979-05-25 |
| BR7303322D0 (pt) | 1974-07-11 |
| DD104673A5 (xx) | 1974-03-12 |
| AU5511673A (en) | 1974-11-07 |
| DK137110B (da) | 1978-01-16 |
| CA976090A (en) | 1975-10-14 |
| ATA410273A (de) | 1978-10-15 |
| US3824342A (en) | 1974-07-16 |
| JPS5215201B2 (xx) | 1977-04-27 |
| FR2183974B1 (xx) | 1978-02-10 |
| CH565494A5 (xx) | 1975-08-15 |
| NL7306404A (xx) | 1973-11-13 |
| FR2183974A1 (xx) | 1973-12-21 |
| GB1432153A (en) | 1976-04-14 |
| IT984179B (it) | 1974-11-20 |