BE623747A - - Google Patents
Info
- Publication number
- BE623747A BE623747A BE623747DA BE623747A BE 623747 A BE623747 A BE 623747A BE 623747D A BE623747D A BE 623747DA BE 623747 A BE623747 A BE 623747A
- Authority
- BE
- Belgium
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
- H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
- H04R1/403—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3720161A GB1030869A (en) | 1962-10-17 | 1962-10-17 | Improvements relating to loud-speakers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE623747A true BE623747A (US08197722-20120612-C00042.png) |
Family
ID=10394608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE623747D BE623747A (US08197722-20120612-C00042.png) | 1962-10-17 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE623747A (US08197722-20120612-C00042.png) |
| GB (1) | GB1030869A (US08197722-20120612-C00042.png) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4042778A (en) * | 1976-04-01 | 1977-08-16 | Clinton Henry H | Collapsible speaker assembly |
| JP2945983B2 (ja) * | 1987-03-25 | 1999-09-06 | 久次 中村 | スピーカ装置 |
-
0
- BE BE623747D patent/BE623747A/xx unknown
-
1962
- 1962-10-17 GB GB3720161A patent/GB1030869A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1030869A (en) | 1966-05-25 |
