FR897298A - Récepteur électro-acoustique - Google Patents
Récepteur électro-acoustiqueInfo
- Publication number
- FR897298A FR897298A FR897298DA FR897298A FR 897298 A FR897298 A FR 897298A FR 897298D A FR897298D A FR 897298DA FR 897298 A FR897298 A FR 897298A
- Authority
- FR
- France
- Prior art keywords
- electro
- acoustic receiver
- acoustic
- receiver
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
- H04R1/38—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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE897298X | 1942-08-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR897298A true FR897298A (fr) | 1945-03-16 |
Family
ID=6848635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR897298D Expired FR897298A (fr) | 1942-08-18 | 1943-08-17 | Récepteur électro-acoustique |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR897298A (fr) |
-
1943
- 1943-08-17 FR FR897298D patent/FR897298A/fr not_active Expired
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