BR8101221A - Trasdutor eletroacustico - Google Patents
Trasdutor eletroacusticoInfo
- Publication number
- BR8101221A BR8101221A BR8101221A BR8101221A BR8101221A BR 8101221 A BR8101221 A BR 8101221A BR 8101221 A BR8101221 A BR 8101221A BR 8101221 A BR8101221 A BR 8101221A BR 8101221 A BR8101221 A BR 8101221A
- Authority
- BR
- Brazil
- Prior art keywords
- acoustic transmitter
- electric acoustic
- electric
- transmitter
- acoustic
- 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
- 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
- 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
-
- 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)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19803007808 DE3007808A1 (de) | 1980-02-29 | 1980-02-29 | Elektroakustischer wandler |
Publications (1)
Publication Number | Publication Date |
---|---|
BR8101221A true BR8101221A (pt) | 1981-09-01 |
Family
ID=6095959
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR8101221A BR8101221A (pt) | 1980-02-29 | 1981-02-27 | Trasdutor eletroacustico |
Country Status (8)
Country | Link |
---|---|
US (1) | US4376232A (pt) |
EP (1) | EP0035222A1 (pt) |
JP (1) | JPS56134898A (pt) |
AU (1) | AU6790581A (pt) |
BR (1) | BR8101221A (pt) |
DE (1) | DE3007808A1 (pt) |
FI (1) | FI810624L (pt) |
ZA (1) | ZA811320B (pt) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0074424B1 (de) * | 1981-09-14 | 1986-12-03 | Heinrich Andreas Peiker | Gegen Feuchtigkeit, und Staub, insbesondere Eisenstaub, geschützter, elektroakustischer, insbesondere elektrodynamischer Wandler |
DE3232177A1 (de) * | 1982-08-30 | 1984-03-01 | Siemens AG, 1000 Berlin und 8000 München | Piezoelektrischer wandler |
FR2542552B1 (fr) * | 1983-03-07 | 1986-04-11 | Thomson Csf | Transducteur electroacoustique a diaphragme piezo-electrique |
DE3425173A1 (de) * | 1984-07-09 | 1986-01-16 | Fernsprech- und Signalbaugesellschaft mbH Schüler & Vershoven, 4300 Essen | Piezoelektrische fernsprechkapsel |
DE3425176A1 (de) * | 1984-07-09 | 1986-02-20 | Fernsprech Und Signalbau Kg Sc | Piezoelektrische fernsprechkapsel |
US4646873A (en) * | 1986-03-04 | 1987-03-03 | Electro-Voice, Inc. | Microphone and acoustic equalizer therefor |
DE3630951A1 (de) * | 1986-09-11 | 1988-03-17 | Siemens Ag | Anordnung zur frequenzgangverbesserung fuer elektroakustische wandler |
JPH01156696U (pt) * | 1988-04-18 | 1989-10-27 | ||
US5406161A (en) * | 1994-05-24 | 1995-04-11 | Industrial Technology Research Institute | Piezoelectric composite receiver |
AT400910B (de) | 1994-06-16 | 1996-04-25 | Akg Akustische Kino Geraete | Akustischer widerstand, insbesondere für elektroakustische wandler |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB970986A (pt) * | 1960-02-12 | |||
DE2831411C2 (de) * | 1978-07-17 | 1983-10-06 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Elektroakustischer Wandler mit mit piezoelektrischer Schicht versehener Membran |
-
1980
- 1980-02-29 DE DE19803007808 patent/DE3007808A1/de not_active Withdrawn
-
1981
- 1981-02-24 EP EP81101327A patent/EP0035222A1/de not_active Ceased
- 1981-02-27 ZA ZA00811320A patent/ZA811320B/xx unknown
- 1981-02-27 JP JP2828281A patent/JPS56134898A/ja active Pending
- 1981-02-27 AU AU67905/81A patent/AU6790581A/en not_active Abandoned
- 1981-02-27 FI FI810624A patent/FI810624L/fi not_active Application Discontinuation
- 1981-02-27 BR BR8101221A patent/BR8101221A/pt unknown
- 1981-03-02 US US06/239,580 patent/US4376232A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
AU6790581A (en) | 1981-09-03 |
FI810624L (fi) | 1981-08-30 |
US4376232A (en) | 1983-03-08 |
EP0035222A1 (de) | 1981-09-09 |
DE3007808A1 (de) | 1981-09-10 |
ZA811320B (en) | 1982-03-31 |
JPS56134898A (en) | 1981-10-21 |
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