FR640926A - Perfectionnements apportés aux hauts parleurs électrostatiques - Google Patents
Perfectionnements apportés aux hauts parleurs électrostatiquesInfo
- Publication number
- FR640926A FR640926A FR640926DA FR640926A FR 640926 A FR640926 A FR 640926A FR 640926D A FR640926D A FR 640926DA FR 640926 A FR640926 A FR 640926A
- Authority
- FR
- France
- Prior art keywords
- electrostatic loudspeakers
- loudspeakers
- electrostatic
- 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
- H04R19/00—Electrostatic transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R19/00—Electrostatic transducers
- H04R19/02—Loudspeakers
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1753137X | 1926-08-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR640926A true FR640926A (fr) | 1928-07-24 |
Family
ID=7741866
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR640926D Expired FR640926A (fr) | 1926-08-12 | 1927-08-10 | Perfectionnements apportés aux hauts parleurs électrostatiques |
Country Status (4)
Country | Link |
---|---|
US (1) | US1753137A (fr) |
DE (1) | DE523587C (fr) |
FR (1) | FR640926A (fr) |
GB (1) | GB275962A (fr) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE744615C (de) * | 1941-03-07 | 1944-01-21 | Philips Nv | Mikrophon fuer geraeuschvolle Umgebung |
US2627558A (en) * | 1946-07-22 | 1953-02-03 | Electro Voice | Unidirectional microphone |
US2552878A (en) * | 1947-09-24 | 1951-05-15 | Electro Voice | Second order differential microphone |
US2519810A (en) * | 1947-12-05 | 1950-08-22 | Jose W Acosta | Electrostatic sound reproducer |
US2824178A (en) * | 1954-04-26 | 1958-02-18 | Philco Corp | Transducers |
US2878323A (en) * | 1954-04-26 | 1959-03-17 | Philco Corp | Transducers |
NL249090A (fr) * | 1959-03-04 | |||
AT211394B (de) * | 1959-10-09 | 1960-10-10 | Goerike Rudolf | Kondensatormikrophon |
JPS5220297Y2 (fr) * | 1974-05-10 | 1977-05-10 | ||
US11428845B2 (en) * | 2015-11-04 | 2022-08-30 | Quantum Technology Sciences, Inc. | System and method for sensing seismic acoustic signals |
-
1926
- 1926-08-15 DE DES75722D patent/DE523587C/de not_active Expired
-
1927
- 1927-07-27 GB GB19953/27A patent/GB275962A/en not_active Expired
- 1927-08-08 US US211544A patent/US1753137A/en not_active Expired - Lifetime
- 1927-08-10 FR FR640926D patent/FR640926A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE523587C (de) | 1931-04-28 |
US1753137A (en) | 1930-04-01 |
GB275962A (en) | 1928-10-25 |
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