NL28935C - - Google Patents
Info
- Publication number
- NL28935C NL28935C NL28935DA NL28935C NL 28935 C NL28935 C NL 28935C NL 28935D A NL28935D A NL 28935DA NL 28935 C NL28935 C NL 28935C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; 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
- H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
- H04R1/342—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for microphones
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; 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
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US297218A US1866831A (en) | 1928-08-03 | 1928-08-03 | Auditorium loud speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL28935C true NL28935C (en) |
Family
ID=23145363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL28935D NL28935C (en) | 1928-08-03 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1866831A (en) |
| NL (1) | NL28935C (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE934353C (en) * | 1948-10-02 | 1955-10-20 | Telefunken Gmbh | Arrangement for the central broadband sound supply of an airspace |
| DE915460C (en) * | 1948-10-03 | 1954-07-22 | Alexander Schaaf | Loudspeaker combination with a uniform sound field |
| DE928351C (en) * | 1949-06-05 | 1955-05-31 | Siemens Ag | Loudspeaker arrangement with several individual loudspeakers arranged in a row to achieve a directional effect in the manner of the straight radiator group |
| DE976894C (en) * | 1949-08-28 | 1964-08-06 | Telefunken Patent | Arrangement for the central broadband sound supply of an airspace |
| US2888090A (en) * | 1949-10-14 | 1959-05-26 | Telefunken Gmbh | Loudspeaker arrangement |
| DE969537C (en) * | 1954-10-06 | 1958-06-12 | Grammophon Ges Mit Beschraenkt | Speaker arrangement with multiple speakers |
| US3022377A (en) * | 1956-10-29 | 1962-02-20 | Philco Corp | Sound reproducing system |
| US3578103A (en) * | 1969-06-04 | 1971-05-11 | John B Lennes | Speaker enclosure |
| US4054750A (en) * | 1976-06-18 | 1977-10-18 | Ralph Montgomery | Full range rotatable speaker housing with oppositely directed speakers |
| US4182429A (en) * | 1977-12-29 | 1980-01-08 | Kabushiki Kaisha Senzaki Seisakusho | Loud-speaker system |
| US4554414A (en) * | 1983-04-28 | 1985-11-19 | Harman International Industries Incorporated | Multi-driver loudspeaker |
| US5088574A (en) * | 1990-04-16 | 1992-02-18 | Kertesz Iii Emery | Ceiling speaker system |
| US5602366A (en) * | 1995-10-12 | 1997-02-11 | Harman International Industries Incorporated | Spaceframe with array element positioning |
| US5996728A (en) * | 1999-04-13 | 1999-12-07 | Eastern Acoustic Works, Inc. | Modular speaker cabinet including an integral rigging system |
| US20020048379A1 (en) * | 2000-10-23 | 2002-04-25 | Gunnar Flentje | Guitar amplifier with volume control |
| US6830275B2 (en) * | 2002-11-27 | 2004-12-14 | Brian J. Shea | Speaker mounted in recreational vehicle |
| US7575095B2 (en) * | 2005-12-28 | 2009-08-18 | Lg Electronics Inc. | Speaker |
-
0
- NL NL28935D patent/NL28935C/xx active
-
1928
- 1928-08-03 US US297218A patent/US1866831A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US1866831A (en) | 1932-07-12 |