FR939369A - Improvements to directional microphones - Google Patents
Improvements to directional microphonesInfo
- Publication number
- FR939369A FR939369A FR939369DA FR939369A FR 939369 A FR939369 A FR 939369A FR 939369D A FR939369D A FR 939369DA FR 939369 A FR939369 A FR 939369A
- Authority
- FR
- France
- Prior art keywords
- directional microphones
- microphones
- directional
- 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)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US472575A US2401328A (en) | 1943-01-16 | 1943-01-16 | Sound translating device |
Publications (1)
Publication Number | Publication Date |
---|---|
FR939369A true FR939369A (en) | 1948-11-12 |
Family
ID=23876067
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR939369D Expired FR939369A (en) | 1943-01-16 | 1946-10-09 | Improvements to directional microphones |
Country Status (5)
Country | Link |
---|---|
US (1) | US2401328A (en) |
BE (1) | BE467509A (en) |
FR (1) | FR939369A (en) |
GB (1) | GB574611A (en) |
NL (1) | NL72895C (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2546343A (en) * | 1946-12-31 | 1951-03-27 | Univ Loudspeakers Inc | Driver unit for loud-speakers |
US2532413A (en) * | 1946-12-31 | 1950-12-05 | Univ Loudspeakers Inc | Magnet structure for loud-speakers |
US2515031A (en) * | 1948-03-31 | 1950-07-11 | Bell Telephone Labor Inc | Microphone having controllable directional response pattern |
US2587684A (en) * | 1948-10-13 | 1952-03-04 | Shure Bros | Directional microphone |
DE945768C (en) * | 1949-06-05 | 1956-07-19 | Siemens Ag | Loudspeaker group arrangement consisting of several loudspeakers built in a row in a common baffle-like baffle |
US2695370A (en) * | 1950-07-04 | 1954-11-23 | Hartford Nat Bank & Trust Co | Permanent magnet for dynamoelectric machines |
NL102054C (en) * | 1954-01-11 | |||
US2865464A (en) * | 1954-08-07 | 1958-12-23 | Gorike Rudolf | Unidirectional dynamic microphone |
DE1073546B (en) * | 1955-05-26 | 1960-01-21 | Rudolf Gorike Wien Dr | Directional microphone with low vibration and wind sensitivity |
US3061690A (en) * | 1958-09-15 | 1962-10-30 | Turner Company | Acoustically compensated microphone with adjustable acoustic resistance |
NL147916B (en) * | 1966-10-22 | 1975-11-17 | Philips Nv | ELECTRODYNAMIC MICROPHONE WITH CARDIOID-SHAPED TARGETING CHARACTERISTICS. |
US3342285A (en) * | 1966-12-19 | 1967-09-19 | Standard Systems Comm Corp | Combination pillow speaker and control unit |
US3679022A (en) * | 1969-07-04 | 1972-07-25 | Nippon Musical Instruments Mfg | Speaker box |
DE19710967C1 (en) * | 1997-03-17 | 1998-10-22 | Karl Heinz Koeppen | Full range speakers |
USD395893S (en) | 1997-05-30 | 1998-07-07 | Telex Communications, Inc. | Microphone |
-
0
- NL NL72895D patent/NL72895C/xx active
- BE BE467509D patent/BE467509A/xx unknown
-
1943
- 1943-01-16 US US472575A patent/US2401328A/en not_active Expired - Lifetime
-
1944
- 1944-01-13 GB GB681/44A patent/GB574611A/en not_active Expired
-
1946
- 1946-10-09 FR FR939369D patent/FR939369A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2401328A (en) | 1946-06-04 |
BE467509A (en) | |
NL72895C (en) | |
GB574611A (en) | 1946-01-14 |
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