NZ203265A - Electroacoustic transducer with attenuating shutter - Google Patents
Electroacoustic transducer with attenuating shutterInfo
- Publication number
- NZ203265A NZ203265A NZ203265A NZ20326583A NZ203265A NZ 203265 A NZ203265 A NZ 203265A NZ 203265 A NZ203265 A NZ 203265A NZ 20326583 A NZ20326583 A NZ 20326583A NZ 203265 A NZ203265 A NZ 203265A
- Authority
- NZ
- New Zealand
- Prior art keywords
- electro
- calling device
- planar member
- planar
- acoustic
- Prior art date
Links
- 239000013078 crystal Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000012886 linear function Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 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
Landscapes
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Mobile Radio Communication Systems (AREA)
- Devices For Supply Of Signal Current (AREA)
- Telephone Set Structure (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Headphones And Earphones (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8205748 | 1982-02-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
NZ203265A true NZ203265A (en) | 1985-04-30 |
Family
ID=10528646
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NZ203265A NZ203265A (en) | 1982-02-26 | 1983-02-14 | Electroacoustic transducer with attenuating shutter |
Country Status (15)
Country | Link |
---|---|
EP (1) | EP0087908B1 (de) |
JP (1) | JPS58159099A (de) |
AT (1) | ATE16879T1 (de) |
AU (1) | AU549945B2 (de) |
CA (1) | CA1215163A (de) |
DE (1) | DE3361370D1 (de) |
DK (1) | DK78383A (de) |
GB (1) | GB2115648B (de) |
HK (1) | HK79485A (de) |
IL (1) | IL67935A (de) |
KE (1) | KE3554A (de) |
MY (1) | MY8600266A (de) |
NZ (1) | NZ203265A (de) |
ZA (1) | ZA831054B (de) |
ZW (1) | ZW5283A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2168875A (en) * | 1984-12-19 | 1986-06-25 | Philips Electronic Associated | Electroacoustic calling device |
AT400910B (de) * | 1994-06-16 | 1996-04-25 | Akg Akustische Kino Geraete | Akustischer widerstand, insbesondere für elektroakustische wandler |
US6124992A (en) * | 1995-02-08 | 2000-09-26 | Seagate Technology Llc | System and method for reconstructing a signal wave in a partial response read channel |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1884724A (en) * | 1923-06-19 | 1932-10-25 | Western Electric Co | Sound box for phonic diaphragms |
US3826333A (en) * | 1973-03-21 | 1974-07-30 | J Buckwalter | Baffle for a sound producing device |
FR2273335B1 (de) * | 1974-05-31 | 1979-05-25 | Klaxon Sa | |
GB2082018B (en) * | 1980-07-31 | 1983-10-12 | Standard Telephones Cables Ltd | Telephone sounder |
-
1983
- 1983-02-14 NZ NZ203265A patent/NZ203265A/en unknown
- 1983-02-16 IL IL67935A patent/IL67935A/xx unknown
- 1983-02-16 ZA ZA831054A patent/ZA831054B/xx unknown
- 1983-02-16 AU AU11492/83A patent/AU549945B2/en not_active Ceased
- 1983-02-16 CA CA000421729A patent/CA1215163A/en not_active Expired
- 1983-02-22 DK DK78383A patent/DK78383A/da not_active Application Discontinuation
- 1983-02-22 EP EP83300910A patent/EP0087908B1/de not_active Expired
- 1983-02-22 DE DE8383300910T patent/DE3361370D1/de not_active Expired
- 1983-02-22 AT AT83300910T patent/ATE16879T1/de active
- 1983-02-23 GB GB08305038A patent/GB2115648B/en not_active Expired
- 1983-02-25 ZW ZW52/83A patent/ZW5283A1/xx unknown
- 1983-02-25 JP JP58030642A patent/JPS58159099A/ja active Pending
-
1985
- 1985-08-07 KE KE3554A patent/KE3554A/xx unknown
- 1985-10-17 HK HK794/85A patent/HK79485A/xx unknown
-
1986
- 1986-12-30 MY MY266/86A patent/MY8600266A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
EP0087908B1 (de) | 1985-12-04 |
ATE16879T1 (de) | 1985-12-15 |
CA1215163A (en) | 1986-12-09 |
IL67935A0 (en) | 1983-06-15 |
IL67935A (en) | 1986-04-29 |
HK79485A (en) | 1985-10-25 |
DK78383D0 (da) | 1983-02-22 |
ZA831054B (en) | 1984-03-28 |
MY8600266A (en) | 1986-12-31 |
DE3361370D1 (en) | 1986-01-16 |
EP0087908A1 (de) | 1983-09-07 |
GB2115648B (en) | 1985-03-13 |
GB2115648A (en) | 1983-09-07 |
GB8305038D0 (en) | 1983-03-30 |
DK78383A (da) | 1983-08-27 |
KE3554A (en) | 1985-08-30 |
ZW5283A1 (en) | 1983-05-11 |
AU549945B2 (en) | 1986-02-20 |
JPS58159099A (ja) | 1983-09-21 |
AU1149283A (en) | 1983-09-01 |
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