ZA793578B - Electro-acoustic transducer - Google Patents
Electro-acoustic transducerInfo
- Publication number
- ZA793578B ZA793578B ZA00793578A ZA793578A ZA793578B ZA 793578 B ZA793578 B ZA 793578B ZA 00793578 A ZA00793578 A ZA 00793578A ZA 793578 A ZA793578 A ZA 793578A ZA 793578 B ZA793578 B ZA 793578B
- Authority
- ZA
- South Africa
- Prior art keywords
- electro
- acoustic transducer
- acoustic
- transducer
- Prior art date
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
- H04R1/22—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
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
- H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19782831362 DE2831362A1 (de) | 1978-07-17 | 1978-07-17 | Elektroakustischer wandler |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA793578B true ZA793578B (en) | 1980-06-25 |
Family
ID=6044593
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA00793578A ZA793578B (en) | 1978-07-17 | 1979-07-16 | Electro-acoustic transducer |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0007036A1 (pt) |
JP (1) | JPS5516594A (pt) |
AR (1) | AR228018A1 (pt) |
AU (1) | AU4893079A (pt) |
BR (1) | BR7904528A (pt) |
DE (1) | DE2831362A1 (pt) |
GB (1) | GB2025732A (pt) |
ZA (1) | ZA793578B (pt) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3005708C2 (de) * | 1980-02-15 | 1984-08-30 | Siemens AG, 1000 Berlin und 8000 München | Wandlerplatte für piezoelektrische Wandler |
JPS582322A (ja) * | 1981-06-30 | 1983-01-07 | Nitto Electric Ind Co Ltd | 半導体封止用エポキシ樹脂組成物 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1299724B (de) * | 1966-10-21 | 1969-07-24 | Siemens Ag | Mikrophonkapsel mit einem piezoelektrischen Wandlerelement und einem Transistorverstaerker |
NL6813996A (pt) * | 1968-09-30 | 1970-04-01 | ||
US3846650A (en) * | 1970-10-08 | 1974-11-05 | Dynamics Corp Massa Div | Electroacoustic transducer of the vibratile diaphragm type with controlled uniformity of performance characteristics and method for controlling uniformity |
US3746898A (en) * | 1971-10-18 | 1973-07-17 | Bell Telephone Labor Inc | Electroacoustic transducer having improved transducing element supporting means |
US3786202A (en) * | 1972-04-10 | 1974-01-15 | Motorola Inc | Acoustic transducer including piezoelectric driving element |
-
1978
- 1978-07-17 DE DE19782831362 patent/DE2831362A1/de not_active Withdrawn
-
1979
- 1979-06-27 EP EP79102142A patent/EP0007036A1/de not_active Withdrawn
- 1979-07-11 GB GB7924083A patent/GB2025732A/en not_active Withdrawn
- 1979-07-16 AR AR277316A patent/AR228018A1/es active
- 1979-07-16 ZA ZA00793578A patent/ZA793578B/xx unknown
- 1979-07-16 AU AU48930/79A patent/AU4893079A/en not_active Abandoned
- 1979-07-16 JP JP8938279A patent/JPS5516594A/ja active Pending
- 1979-07-16 BR BR7904528A patent/BR7904528A/pt unknown
Also Published As
Publication number | Publication date |
---|---|
EP0007036A1 (de) | 1980-01-23 |
AU4893079A (en) | 1980-01-24 |
DE2831362A1 (de) | 1980-01-31 |
JPS5516594A (en) | 1980-02-05 |
AR228018A1 (es) | 1983-01-14 |
GB2025732A (en) | 1980-01-23 |
BR7904528A (pt) | 1980-04-08 |
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