NL7208049A - - Google Patents
Info
- Publication number
- NL7208049A NL7208049A NL7208049A NL7208049A NL7208049A NL 7208049 A NL7208049 A NL 7208049A NL 7208049 A NL7208049 A NL 7208049A NL 7208049 A NL7208049 A NL 7208049A NL 7208049 A NL7208049 A NL 7208049A
- Authority
- NL
- Netherlands
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
- H04R1/34—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
- H04R1/38—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 in which sound waves act upon both sides of a diaphragm and incorporating acoustic phase-shifting means, e.g. pressure-gradient microphone
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Steroid Compounds (AREA)
- Building Environments (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2130887 | 1971-06-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL7208049A true NL7208049A (https=) | 1972-12-28 |
Family
ID=5811444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7208049A NL7208049A (https=) | 1971-06-22 | 1972-06-13 |
Country Status (8)
| Country | Link |
|---|---|
| BE (1) | BE784997A (https=) |
| CH (1) | CH547048A (https=) |
| DE (1) | DE2130887B1 (https=) |
| ES (1) | ES404091A1 (https=) |
| FR (1) | FR2143320A1 (https=) |
| IT (1) | IT965841B (https=) |
| NL (1) | NL7208049A (https=) |
| NO (1) | NO130256B (https=) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2531299B1 (fr) * | 1982-08-02 | 1986-07-18 | Depaepe Sa Henri | Transducteur acousto-electrique, notamment pour microphone piezoelectrique |
| DE3807251A1 (de) * | 1988-03-05 | 1989-09-14 | Sennheiser Electronic | Kapazitiver schallwandler |
-
1971
- 1971-06-22 DE DE19712130887D patent/DE2130887B1/de active Pending
-
1972
- 1972-05-17 CH CH734072A patent/CH547048A/xx not_active IP Right Cessation
- 1972-06-13 NL NL7208049A patent/NL7208049A/xx unknown
- 1972-06-16 NO NO02166/72A patent/NO130256B/no unknown
- 1972-06-16 BE BE784997A patent/BE784997A/xx unknown
- 1972-06-20 IT IT51028/72A patent/IT965841B/it active
- 1972-06-21 ES ES404091A patent/ES404091A1/es not_active Expired
- 1972-06-22 FR FR7222625A patent/FR2143320A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| ES404091A1 (es) | 1975-05-16 |
| IT965841B (it) | 1974-02-11 |
| DE2130887B1 (de) | 1972-09-07 |
| BE784997A (fr) | 1972-10-16 |
| NO130256B (https=) | 1974-07-29 |
| CH547048A (de) | 1974-03-15 |
| FR2143320A1 (https=) | 1973-02-02 |