BE562680A - - Google Patents
Info
- Publication number
- BE562680A BE562680A BE562680DA BE562680A BE 562680 A BE562680 A BE 562680A BE 562680D A BE562680D A BE 562680DA BE 562680 A BE562680 A BE 562680A
- 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
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Transducers For Ultrasonic Waves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3603156A GB819146A (en) | 1956-11-26 | 1956-11-26 | Improvements in or relating to acoustic impedance devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE562680A true BE562680A (id) |
Family
ID=10384198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE562680D BE562680A (id) | 1956-11-26 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE562680A (id) |
| GB (1) | GB819146A (id) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3007834A1 (de) * | 1980-02-29 | 1981-09-17 | Siemens AG, 1000 Berlin und 8000 München | Elektroakustischer wandler |
| DK148550C (da) * | 1981-12-10 | 1986-04-21 | Standard Electric Kirk | Elektrodynamisk transducer med bevaegelig spole |
| FR2542550B1 (fr) * | 1983-03-07 | 1986-11-14 | Thomson Csf | Transducteur electroacoustique a correction acoustique integree |
| ATE70936T1 (de) * | 1986-01-23 | 1992-01-15 | Siemens Plessey Electronic | Akustischer wandler. |
| GB9707372D0 (en) * | 1997-04-11 | 1997-05-28 | Bpb Plc | Cementitiuos tile |
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0
- BE BE562680D patent/BE562680A/xx unknown
-
1956
- 1956-11-26 GB GB3603156A patent/GB819146A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB819146A (en) | 1959-08-26 |