NL66851C - - Google Patents
Info
- Publication number
- NL66851C NL66851C NL66851DA NL66851C NL 66851 C NL66851 C NL 66851C NL 66851D A NL66851D A NL 66851DA NL 66851 C NL66851 C NL 66851C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMSÂ
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R27/00—Public address systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE879079X | 1941-02-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL66851C true NL66851C (en:Method) |
Family
ID=6818836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL66851D NL66851C (en:Method) | 1941-02-06 |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR879079A (en:Method) |
| NL (1) | NL66851C (en:Method) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1034691B (de) * | 1957-03-25 | 1958-07-24 | Siemens Ag | Lautsprecheranlage mit einseitig gerichteten Lautsprechern |
-
0
- NL NL66851D patent/NL66851C/xx active
-
1942
- 1942-02-05 FR FR879079D patent/FR879079A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR879079A (fr) | 1943-02-12 |