FR40003E - Acoustic diffuser with basic warped surfaces with parallel edges - Google Patents
Acoustic diffuser with basic warped surfaces with parallel edgesInfo
- Publication number
- FR40003E FR40003E FR40003DA FR40003E FR 40003 E FR40003 E FR 40003E FR 40003D A FR40003D A FR 40003DA FR 40003 E FR40003 E FR 40003E
- Authority
- FR
- France
- Prior art keywords
- basic
- parallel edges
- acoustic diffuser
- warped surfaces
- warped
- 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
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
- H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Stringed Musical Instruments (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR547840X | 1929-06-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR40003E true FR40003E (en) | 1932-03-21 |
Family
ID=8934455
Family Applications (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR692095D Expired FR692095A (en) | 1929-06-04 | 1929-06-04 | Acoustic diffuser with basic warped surfaces with parallel edges |
FR37934D Expired FR37934E (en) | 1929-06-04 | 1929-08-26 | Acoustic diffuser with basic warped surfaces with parallel edges |
FR38511D Expired FR38511E (en) | 1929-06-04 | 1929-12-16 | Acoustic diffuser with elementary warped surfaces with parallel edges |
FR38677D Expired FR38677E (en) | 1929-06-04 | 1930-01-10 | Acoustic diffuser with basic warped surfaces with parallel edges |
FR40003D Expired FR40003E (en) | 1929-06-04 | 1930-09-25 | Acoustic diffuser with basic warped surfaces with parallel edges |
Family Applications Before (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR692095D Expired FR692095A (en) | 1929-06-04 | 1929-06-04 | Acoustic diffuser with basic warped surfaces with parallel edges |
FR37934D Expired FR37934E (en) | 1929-06-04 | 1929-08-26 | Acoustic diffuser with basic warped surfaces with parallel edges |
FR38511D Expired FR38511E (en) | 1929-06-04 | 1929-12-16 | Acoustic diffuser with elementary warped surfaces with parallel edges |
FR38677D Expired FR38677E (en) | 1929-06-04 | 1930-01-10 | Acoustic diffuser with basic warped surfaces with parallel edges |
Country Status (5)
Country | Link |
---|---|
US (1) | US1796335A (en) |
BE (1) | BE370732A (en) |
DE (1) | DE547840C (en) |
FR (5) | FR692095A (en) |
GB (2) | GB344290A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2182823A (en) * | 1985-11-07 | 1987-05-20 | Midlen Trading Corp | Diaphragm and driver for a loudspeaker |
CA1284837C (en) * | 1987-06-18 | 1991-06-11 | Highwood Audio Inc. | Audio transducer |
EP1377115B1 (en) * | 2002-06-24 | 2016-01-06 | Panasonic Intellectual Property Management Co., Ltd. | Loudspeaker diaphragm |
-
0
- BE BE370732D patent/BE370732A/xx unknown
-
1929
- 1929-06-04 FR FR692095D patent/FR692095A/en not_active Expired
- 1929-08-26 FR FR37934D patent/FR37934E/en not_active Expired
- 1929-09-25 DE DEL76298D patent/DE547840C/en not_active Expired
- 1929-12-16 FR FR38511D patent/FR38511E/en not_active Expired
-
1930
- 1930-01-10 FR FR38677D patent/FR38677E/en not_active Expired
- 1930-05-13 US US452008A patent/US1796335A/en not_active Expired - Lifetime
- 1930-05-14 GB GB14837/30A patent/GB344290A/en not_active Expired
- 1930-05-15 GB GB14987/30A patent/GB346205A/en not_active Expired
- 1930-09-25 FR FR40003D patent/FR40003E/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR38511E (en) | 1931-06-13 |
FR38677E (en) | 1931-06-26 |
BE370732A (en) | |
US1796335A (en) | 1931-03-17 |
GB344290A (en) | 1931-03-05 |
FR692095A (en) | 1930-10-30 |
FR37934E (en) | 1931-02-07 |
DE547840C (en) | 1932-04-07 |
GB346205A (en) | 1931-04-09 |
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