GB1350023A - Electro acoustical transducers - Google Patents
Electro acoustical transducersInfo
- Publication number
- GB1350023A GB1350023A GB1556772A GB1556772A GB1350023A GB 1350023 A GB1350023 A GB 1350023A GB 1556772 A GB1556772 A GB 1556772A GB 1556772 A GB1556772 A GB 1556772A GB 1350023 A GB1350023 A GB 1350023A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaphragm
- transducer
- april
- hollow
- resilient body
- 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
- 239000000919 ceramic Substances 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 229920002379 silicone rubber Polymers 0.000 abstract 1
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
- H04R1/222—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only for microphones
-
- 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
- H04R7/16—Mounting or tensioning of diaphragms or cones
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
1350023 Transducers; diaphragms SIEMENS AG 5 April 1972 [23 April 1971] 15567/72 Addition to 1293670 Heading H4J A transducer, particularly a microphone, which consists of a diaphragm 2 that is gripped in its peripheral region by a resilient body 3, e.g. silicon rubber, such as to obtain particular frequency peaks for the diaphragm, comprises a member 6 having an upstanding annular surface 5 for supporting the resilient body 3, the inner diameter p2 of the annular surface being greater than that p1 of the body 3. Members having different size annular surfaces may be provided so that a particular size supporting surface may be selected in dependence on the frequency characteristic required of the transducer. The member 6 may be hollow with apertures connecting the inner hollow to the space behind the diaphragm (Fig. 2, not shown) so as to form a Helmholtz resonator, and possibly also to the space defined by the rear part 10 of the transducer casing (Fig. 3, not shown). The diaphragm may carry a ceramic piezo electric layer. An amplifier may be incorporated in the housing which has an external contact 12 mounted in an insulating portion 11 thereof.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2119911A DE2119911B2 (en) | 1971-04-23 | 1971-04-23 | Electroacoustic converter, in particular microphone for telephone systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1350023A true GB1350023A (en) | 1974-04-18 |
Family
ID=5805699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1556772A Expired GB1350023A (en) | 1971-04-23 | 1972-04-05 | Electro acoustical transducers |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US3798392A (en) |
| BE (1) | BE782498R (en) |
| BG (1) | BG20417A4 (en) |
| DE (1) | DE2119911B2 (en) |
| FR (1) | FR2134023B2 (en) |
| GB (1) | GB1350023A (en) |
| IT (1) | IT1018506B (en) |
| LU (1) | LU65209A1 (en) |
| SE (1) | SE367752B (en) |
| ZA (1) | ZA722575B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1032479A (en) * | 1974-09-16 | 1978-06-06 | Rudolf Gorike | Headphone |
| DE2937922A1 (en) * | 1979-09-19 | 1981-04-09 | Siemens AG, 1000 Berlin und 8000 München | PIEZOELECTRIC CONVERTER |
| WO2014061584A1 (en) * | 2012-10-15 | 2014-04-24 | Ｎｅｃカシオモバイルコミュニケーションズ株式会社 | Electroacoustic transducer, manufacturing method thereof, and electronic device utilizing same |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE88657C (en) * | ||||
| US1757938A (en) * | 1925-04-13 | 1930-05-06 | Harvey C Hayes | Acoustic instrument |
| FR1084139A (en) * | 1952-10-06 | 1955-01-17 | Condenser microphone for directional reception | |
| US2921993A (en) * | 1955-10-04 | 1960-01-19 | Electro Voice | Pressure gradient noise canceling microphone |
| US3206558A (en) * | 1961-09-22 | 1965-09-14 | Erie Technological Prod Inc | Microphone |
| DE1226647B (en) * | 1965-03-22 | 1966-10-13 | Siemens Ag | Electroacoustic converter |
| BE759888A (en) * | 1969-12-05 | 1971-06-04 | Siemens Ag | ELECTRO-ACOUSTIC TRANSDUCER, ESPECIALLY MICROPHONE FOR TELEPHONE SYSTEMS |
-
1971
- 1971-04-23 DE DE2119911A patent/DE2119911B2/en not_active Withdrawn
-
1972
- 1972-04-05 GB GB1556772A patent/GB1350023A/en not_active Expired
- 1972-04-17 ZA ZA722575A patent/ZA722575B/en unknown
- 1972-04-18 US US00245105A patent/US3798392A/en not_active Expired - Lifetime
- 1972-04-20 BG BG20269A patent/BG20417A4/xx unknown
- 1972-04-21 IT IT7322/72A patent/IT1018506B/en active
- 1972-04-21 FR FR7214194A patent/FR2134023B2/fr not_active Expired
- 1972-04-21 BE BE782498A patent/BE782498R/en active
- 1972-04-21 LU LU65209D patent/LU65209A1/xx unknown
- 1972-04-24 SE SE05378/72A patent/SE367752B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US3798392A (en) | 1974-03-19 |
| IT1018506B (en) | 1977-10-20 |
| FR2134023A2 (en) | 1972-12-01 |
| DE2119911A1 (en) | 1972-11-02 |
| SE367752B (en) | 1974-06-04 |
| LU65209A1 (en) | 1972-07-13 |
| BE782498R (en) | 1972-10-23 |
| FR2134023B2 (en) | 1978-03-03 |
| ZA722575B (en) | 1973-01-31 |
| DE2119911B2 (en) | 1973-11-15 |
| BG20417A4 (en) | 1975-11-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |