NL249090A - - Google Patents
Info
- Publication number
- NL249090A NL249090A NL249090DA NL249090A NL 249090 A NL249090 A NL 249090A NL 249090D A NL249090D A NL 249090DA NL 249090 A NL249090 A NL 249090A
- Authority
- NL
- Netherlands
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
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- 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
- H04R19/04—Microphones
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT170659A AT209396B (de) | 1959-03-04 | 1959-03-04 | Kondensatormikrophon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL249090A true NL249090A (US07816562-20101019-C00012.png) |
Family
ID=3519210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL249090D NL249090A (US07816562-20101019-C00012.png) | 1959-03-04 |
Country Status (5)
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT211394B (de) * | 1959-10-09 | 1960-10-10 | Goerike Rudolf | Kondensatormikrophon |
| AT226290B (de) * | 1961-06-19 | 1963-03-11 | Akg Akustische Kino Geraete | Schallempfänger mit vorzugsweise einseitiger, gegebenenfalls einstellbarer Richtcharakteristik, enthaltend ein oder mehrere nach dem elektrostatischen Prinzip arbeitende Wandlersysteme |
| GB1067344A (en) * | 1964-09-11 | 1967-05-03 | Standard Telephones Cables Ltd | Electro-mechanical transducer arrangement |
| US3777079A (en) * | 1971-10-21 | 1973-12-04 | Willco Gmbh | Directional microphone for head mounted midget hearing aids |
| US4675906A (en) * | 1984-12-20 | 1987-06-23 | At&T Company, At&T Bell Laboratories | Second order toroidal microphone |
| JPH0681352B2 (ja) * | 1985-11-19 | 1994-10-12 | 株式会社オ−デイオテクニカ | 狭指向性マイクロホン |
| JP2562295B2 (ja) * | 1985-11-19 | 1996-12-11 | 株式会社 オ−デイオテクニカ | 狭指向性マイクロホン |
| USD444143S1 (en) | 1999-10-08 | 2001-06-26 | Telex Communications, Inc. | Microphone |
| JP1603197S (US07816562-20101019-C00012.png) * | 2017-06-12 | 2018-05-07 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE523587C (de) * | 1926-08-12 | 1931-04-28 | Georg Seibt Fabrik Elektr U Me | Elektrostatischer Lautsprecher |
| US1776112A (en) * | 1929-04-08 | 1930-09-16 | Ephraim Banning | Loud-speaker condenser |
| DE912821C (de) * | 1935-11-13 | 1954-06-03 | Siemens Ag | Einrichtung zur Sprachuebertragung aus geraeuscherfuellten Raeumen |
| DE884516C (de) * | 1940-12-09 | 1953-07-27 | Siemens Ag | Elektrostatisches Mikrophon |
| US2387845A (en) * | 1943-06-24 | 1945-10-30 | Bell Telephone Labor Inc | Electroacoustic transducer |
| GB571870A (en) * | 1943-12-10 | 1945-09-12 | Otto Kurt Kolb | Improvements relating to unidirectional microphones |
| US2686847A (en) * | 1951-12-12 | 1954-08-17 | Bell Telephone Labor Inc | Directional transducer |
| DE1044170B (de) * | 1952-08-14 | 1958-11-20 | Schoeps Dr Ing Karl | Mikrophon-Anordnung zur Erzielung einer Richtcharakteristik fuer bevorzugt einseitige Schallaufnahme |
| US2787671A (en) * | 1952-10-06 | 1957-04-02 | Schall Technik Dr Ing Karl Sch | Microphone arrangement |
| DE1011467B (de) * | 1954-08-13 | 1957-07-04 | Schoeps Dr Ing Karl | Umschaltbares Kondensator-Mikrophon |
| US2920140A (en) * | 1958-03-14 | 1960-01-05 | Rca Corp | Electrostatic microphone circuits |
-
0
- NL NL249090D patent/NL249090A/xx unknown
-
1959
- 1959-03-04 AT AT170659A patent/AT209396B/de active
-
1960
- 1960-01-27 DE DEA33819A patent/DE1121116B/de active Pending
- 1960-02-23 GB GB6259/60A patent/GB911866A/en not_active Expired
- 1960-02-24 US US10718A patent/US3082298A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| AT209396B (de) | 1960-06-10 |
| GB911866A (en) | 1962-11-28 |
| DE1121116B (de) | 1962-01-04 |
| US3082298A (en) | 1963-03-19 |
