BG20835A3 - - Google Patents
Info
- Publication number
- BG20835A3 BG20835A3 BG21178A BG2117872A BG20835A3 BG 20835 A3 BG20835 A3 BG 20835A3 BG 21178 A BG21178 A BG 21178A BG 2117872 A BG2117872 A BG 2117872A BG 20835 A3 BG20835 A3 BG 20835A3
- Authority
- BG
- Bulgaria
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/323—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only for loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/26—Spatial arrangements of separate transducers responsive to two or more frequency ranges
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
- Transducers For Ultrasonic Waves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HUEE1935A HU163253B (cg-RX-API-DMAC7.html) | 1971-08-16 | 1971-08-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BG20835A3 true BG20835A3 (cg-RX-API-DMAC7.html) | 1975-12-20 |
Family
ID=10995379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BG21178A BG20835A3 (cg-RX-API-DMAC7.html) | 1971-08-16 | 1972-08-10 |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US3862366A (cg-RX-API-DMAC7.html) |
| AT (1) | AT330869B (cg-RX-API-DMAC7.html) |
| BG (1) | BG20835A3 (cg-RX-API-DMAC7.html) |
| CA (1) | CA978093A (cg-RX-API-DMAC7.html) |
| CS (1) | CS171735B2 (cg-RX-API-DMAC7.html) |
| DD (1) | DD98415A5 (cg-RX-API-DMAC7.html) |
| DE (1) | DE2236306B2 (cg-RX-API-DMAC7.html) |
| FR (1) | FR2149449B1 (cg-RX-API-DMAC7.html) |
| GB (1) | GB1407243A (cg-RX-API-DMAC7.html) |
| HU (1) | HU163253B (cg-RX-API-DMAC7.html) |
| PL (1) | PL78133B1 (cg-RX-API-DMAC7.html) |
| SE (1) | SE386799B (cg-RX-API-DMAC7.html) |
| SU (1) | SU510171A3 (cg-RX-API-DMAC7.html) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1086464B (it) * | 1977-09-06 | 1985-05-28 | Selmin Sas | Metodo e dispositivi per l'irradiazione omnidirezionale di onde acustiche |
| US4445227A (en) * | 1981-12-28 | 1984-04-24 | Magnavox Consumer Electronics Company | Loudspeaker having improved directional characteristics |
| DE3831468A1 (de) * | 1988-09-16 | 1990-03-22 | Messerschmitt Boelkow Blohm | Segelyacht |
| US5250763A (en) * | 1991-10-07 | 1993-10-05 | Brown William G | Acoustical equalization device system |
| US5278361A (en) * | 1993-02-05 | 1994-01-11 | Thomson Consumer Electronics, Inc. | Loudspeaker system |
| US6201878B1 (en) * | 1995-09-02 | 2001-03-13 | New Transducers Limited | Portable compact disc player |
| US6389935B1 (en) * | 1996-09-02 | 2002-05-21 | New Transducers Limited | Acoustic display screen |
| GB9930275D0 (en) * | 1999-12-21 | 2000-02-09 | New Transducers Ltd | Loudspeakers |
| US20030006092A1 (en) * | 2001-06-27 | 2003-01-09 | Rpg Diffusor Systems, Inc. | Sound diffuser with low frequency sound absorption |
| US7392880B2 (en) * | 2002-04-02 | 2008-07-01 | Gibson Guitar Corp. | Dual range horn with acoustic crossover |
| CN101072451A (zh) * | 2006-05-12 | 2007-11-14 | 鸿富锦精密工业（深圳）有限公司 | 音箱面罩 |
| US9113257B2 (en) * | 2013-02-01 | 2015-08-18 | William E. Collins | Phase-unified loudspeakers: parallel crossovers |
| US20150312693A1 (en) * | 2014-04-23 | 2015-10-29 | William E. Collins | Phase-unified loudspeakers: series crossovers |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3104730A (en) * | 1963-09-24 | Speaker enclosure | ||
| US2143175A (en) * | 1937-10-23 | 1939-01-10 | Samuel A Waite | Sound reproducing system |
| GB721976A (en) * | 1952-08-11 | 1955-01-19 | Ferguson Radio Corp | Improvements in and relating to sound reproducing apparatus |
| US3125181A (en) * | 1961-06-21 | 1964-03-17 | pawlowski | |
| US3340956A (en) * | 1965-11-01 | 1967-09-12 | Motorola Inc | Sound reproduction apparatus |
| BE756400A (fr) * | 1969-11-26 | 1971-03-01 | Elektroakusztikai Gyar | Enceinte acoustique |
-
1971
- 1971-08-16 HU HUEE1935A patent/HU163253B/hu not_active IP Right Cessation
-
1972
- 1972-07-20 AT AT627872A patent/AT330869B/de not_active IP Right Cessation
- 1972-07-24 DE DE19722236306 patent/DE2236306B2/de active Granted
- 1972-07-26 SE SE7209788A patent/SE386799B/xx unknown
- 1972-07-28 PL PL1972156988A patent/PL78133B1/pl unknown
- 1972-08-01 DD DD164797A patent/DD98415A5/xx unknown
- 1972-08-10 BG BG21178A patent/BG20835A3/xx unknown
- 1972-08-10 CA CA149,320A patent/CA978093A/en not_active Expired
- 1972-08-10 US US279515A patent/US3862366A/en not_active Expired - Lifetime
- 1972-08-11 FR FR7229164A patent/FR2149449B1/fr not_active Expired
- 1972-08-15 CS CS725646A patent/CS171735B2/cs unknown
- 1972-08-15 SU SU1820169A patent/SU510171A3/ru active
- 1972-08-15 GB GB3797772A patent/GB1407243A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2149449B1 (cg-RX-API-DMAC7.html) | 1980-03-14 |
| ATA627872A (de) | 1975-10-15 |
| FR2149449A1 (cg-RX-API-DMAC7.html) | 1973-03-30 |
| PL78133B1 (cg-RX-API-DMAC7.html) | 1975-04-30 |
| DD98415A5 (cg-RX-API-DMAC7.html) | 1973-06-12 |
| GB1407243A (en) | 1975-09-24 |
| DE2236306A1 (de) | 1973-03-15 |
| AT330869B (de) | 1976-07-26 |
| SU510171A3 (ru) | 1976-04-05 |
| DE2236306B2 (de) | 1976-07-08 |
| US3862366A (en) | 1975-01-21 |
| CS171735B2 (en) | 1976-10-31 |
| CA978093A (en) | 1975-11-18 |
| SE386799B (sv) | 1976-08-16 |
| HU163253B (cg-RX-API-DMAC7.html) | 1973-07-28 |