FR865911A - Audiphone perfectionné - Google Patents
Audiphone perfectionnéInfo
- Publication number
- FR865911A FR865911A FR865911DA FR865911A FR 865911 A FR865911 A FR 865911A FR 865911D A FR865911D A FR 865911DA FR 865911 A FR865911 A FR 865911A
- Authority
- FR
- France
- Prior art keywords
- audiphone
- advanced
- advanced audiphone
- 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
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/50—Customised settings for obtaining desired overall acoustical characteristics
- H04R25/502—Customised settings for obtaining desired overall acoustical characteristics using analog signal processing
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Neurosurgery (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US535753XA | 1939-06-20 | 1939-06-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR865911A true FR865911A (fr) | 1941-06-09 |
Family
ID=21985195
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR865911D Expired FR865911A (fr) | 1939-06-20 | 1940-05-31 | Audiphone perfectionné |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE469534A (fr) |
FR (1) | FR865911A (fr) |
GB (1) | GB535753A (fr) |
-
0
- BE BE469534D patent/BE469534A/xx unknown
-
1940
- 1940-05-21 GB GB9004/40A patent/GB535753A/en not_active Expired
- 1940-05-31 FR FR865911D patent/FR865911A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB535753A (en) | 1941-04-21 |
BE469534A (fr) |
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