GB961369A - Improvements in electro-acoustic transducer which is incorporated in a capsule and comprises a transistor amplifier particularly for telephone handsets - Google Patents
Improvements in electro-acoustic transducer which is incorporated in a capsule and comprises a transistor amplifier particularly for telephone handsetsInfo
- Publication number
- GB961369A GB961369A GB18588/62A GB1858862A GB961369A GB 961369 A GB961369 A GB 961369A GB 18588/62 A GB18588/62 A GB 18588/62A GB 1858862 A GB1858862 A GB 1858862A GB 961369 A GB961369 A GB 961369A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transducer
- diaphragm
- transistor amplifier
- ducts
- capsule
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S181/00—Acoustics
- Y10S181/40—Wave coupling
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT97061A AT228283B (de) | 1961-02-06 | 1961-02-06 | In eine Kapsel eingebauter elektroakustischer Wandler mit einem Transistorverstärker, insbesondere für Handapparate von Fernsprechstationen |
Publications (1)
Publication Number | Publication Date |
---|---|
GB961369A true GB961369A (en) | 1964-06-17 |
Family
ID=3503981
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB18588/62A Expired GB961369A (en) | 1961-02-06 | 1962-05-15 | Improvements in electro-acoustic transducer which is incorporated in a capsule and comprises a transistor amplifier particularly for telephone handsets |
Country Status (4)
Country | Link |
---|---|
US (1) | US3201516A (de) |
AT (2) | AT228283B (de) |
DE (1) | DE1186108B (de) |
GB (1) | GB961369A (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6953012B2 (en) | 2003-10-20 | 2005-10-11 | Honda Motor Co., Ltd. | Forced opening and closing type valve operating system |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4401859A (en) * | 1981-05-29 | 1983-08-30 | Electro-Voice, Incorporated | Directional microphone with high frequency selective acoustic lens |
US4633045A (en) * | 1985-02-13 | 1986-12-30 | Crown International, Inc. | Differential microphone |
US4625828A (en) * | 1985-09-09 | 1986-12-02 | The Boeing Company | Acoustic reflector for ground plane microphone |
US7352558B2 (en) | 2003-07-09 | 2008-04-01 | Maxwell Technologies, Inc. | Dry particle based capacitor and methods of making same |
US7791860B2 (en) * | 2003-07-09 | 2010-09-07 | Maxwell Technologies, Inc. | Particle based electrodes and methods of making same |
US20060147712A1 (en) * | 2003-07-09 | 2006-07-06 | Maxwell Technologies, Inc. | Dry particle based adhesive electrode and methods of making same |
US20070122698A1 (en) | 2004-04-02 | 2007-05-31 | Maxwell Technologies, Inc. | Dry-particle based adhesive and dry film and methods of making same |
US20110165318A9 (en) * | 2004-04-02 | 2011-07-07 | Maxwell Technologies, Inc. | Electrode formation by lamination of particles onto a current collector |
US7920371B2 (en) * | 2003-09-12 | 2011-04-05 | Maxwell Technologies, Inc. | Electrical energy storage devices with separator between electrodes and methods for fabricating the devices |
US7090946B2 (en) * | 2004-02-19 | 2006-08-15 | Maxwell Technologies, Inc. | Composite electrode and method for fabricating same |
US7440258B2 (en) * | 2005-03-14 | 2008-10-21 | Maxwell Technologies, Inc. | Thermal interconnects for coupling energy storage devices |
DE102013221752A1 (de) * | 2013-10-25 | 2015-04-30 | Kaetel Systems Gmbh | Ohrhörer und verfahren zum herstellen eines ohrhörers |
GB2527784A (en) * | 2014-07-01 | 2016-01-06 | Audiogravity Holdings Ltd | Wind noise reduction apparatus |
US11785375B2 (en) * | 2021-06-15 | 2023-10-10 | Quiet, Inc. | Precisely controlled microphone acoustic attenuator with protective microphone enclosure |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE912821C (de) * | 1935-11-13 | 1954-06-03 | Siemens Ag | Einrichtung zur Sprachuebertragung aus geraeuscherfuellten Raeumen |
US2299620A (en) * | 1938-08-19 | 1942-10-20 | Associated Electric Lab Inc | Acoustic apparatus |
US2228886A (en) * | 1938-10-31 | 1941-01-14 | Rca Corp | Electroacoustical apparatus |
US2463762A (en) * | 1941-11-14 | 1949-03-08 | Automatic Elect Lab | Electroacoustical transducer |
US2870255A (en) * | 1954-01-11 | 1959-01-20 | Remler Company Ltd | Microphone assembly |
DE1014595B (de) * | 1955-02-15 | 1957-08-29 | Lab Wennebostel | Richtmikrophon |
AT190988B (de) * | 1956-02-09 | 1957-07-25 | Henry Radio Heinrich & Co | Tauchspulenmikrophon |
US3048659A (en) * | 1959-03-30 | 1962-08-07 | Motorola Inc | Microphone preamplifier |
-
1961
- 1961-02-06 AT AT97061A patent/AT228283B/de active
-
1962
- 1962-02-03 AT AT90762A patent/AT234171B/de active
- 1962-02-05 DE DEA39378A patent/DE1186108B/de active Pending
- 1962-05-14 US US194265A patent/US3201516A/en not_active Expired - Lifetime
- 1962-05-15 GB GB18588/62A patent/GB961369A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6953012B2 (en) | 2003-10-20 | 2005-10-11 | Honda Motor Co., Ltd. | Forced opening and closing type valve operating system |
Also Published As
Publication number | Publication date |
---|---|
AT234171B (de) | 1964-06-25 |
DE1186108B (de) | 1965-01-28 |
US3201516A (en) | 1965-08-17 |
AT228283B (de) | 1963-07-10 |
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