JPS4910719A - - Google Patents

Info

Publication number
JPS4910719A
JPS4910719A JP48040076A JP4007673A JPS4910719A JP S4910719 A JPS4910719 A JP S4910719A JP 48040076 A JP48040076 A JP 48040076A JP 4007673 A JP4007673 A JP 4007673A JP S4910719 A JPS4910719 A JP S4910719A
Authority
JP
Japan
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.)
Granted
Application number
JP48040076A
Other languages
Japanese (ja)
Other versions
JPS5338924B2 (enrdf_load_stackoverflow
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of JPS4910719A publication Critical patent/JPS4910719A/ja
Publication of JPS5338924B2 publication Critical patent/JPS5338924B2/ja
Expired legal-status Critical Current

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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
JP4007673A 1972-04-10 1973-04-10 Expired JPS5338924B2 (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US24250172A 1972-04-10 1972-04-10

Publications (2)

Publication Number Publication Date
JPS4910719A true JPS4910719A (enrdf_load_stackoverflow) 1974-01-30
JPS5338924B2 JPS5338924B2 (enrdf_load_stackoverflow) 1978-10-18

Family

ID=22915023

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4007673A Expired JPS5338924B2 (enrdf_load_stackoverflow) 1972-04-10 1973-04-10

Country Status (11)

Country Link
US (1) US3786202A (enrdf_load_stackoverflow)
JP (1) JPS5338924B2 (enrdf_load_stackoverflow)
AU (1) AU5415873A (enrdf_load_stackoverflow)
BE (1) BE798009A (enrdf_load_stackoverflow)
CA (1) CA991304A (enrdf_load_stackoverflow)
DE (2) DE7313564U (enrdf_load_stackoverflow)
FR (1) FR2179883B1 (enrdf_load_stackoverflow)
GB (1) GB1399766A (enrdf_load_stackoverflow)
HK (1) HK74978A (enrdf_load_stackoverflow)
IT (1) IT982996B (enrdf_load_stackoverflow)
NL (1) NL173699C (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5437135U (enrdf_load_stackoverflow) * 1977-08-18 1979-03-10
JPS54149236U (enrdf_load_stackoverflow) * 1978-04-07 1979-10-17
JPS5516597A (en) * 1978-07-17 1980-02-05 Siemens Ag Electroacoustic converter

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4035672A (en) * 1975-02-06 1977-07-12 Cts Corporation Acoustic transducer with a dual purpose piezoelectric element
GB2018548B (en) * 1978-04-07 1982-06-16 Matsushita Electric Ind Co Ltd Piezoelectric speaker
DE2831362A1 (de) * 1978-07-17 1980-01-31 Siemens Ag Elektroakustischer wandler
JPS5911237B2 (ja) * 1979-08-16 1984-03-14 株式会社精工舎 圧電スピ−カ
DE3005708C2 (de) * 1980-02-15 1984-08-30 Siemens AG, 1000 Berlin und 8000 München Wandlerplatte für piezoelektrische Wandler
EP0057193A1 (en) * 1980-08-11 1982-08-11 Motorola, Inc. Apparatus and method for enhancing the frequency response of a loudspeaker
JPS6025956B2 (ja) * 1980-12-10 1985-06-21 松下電器産業株式会社 超音波送受波器
US4430529A (en) 1980-12-24 1984-02-07 Murata Manufacturing Co., Ltd. Piezoelectric loudspeaker
JPS5851697A (ja) * 1981-09-22 1983-03-26 Matsushita Electric Ind Co Ltd 超音波送受波器
US4607186A (en) * 1981-11-17 1986-08-19 Matsushita Electric Industrial Co. Ltd. Ultrasonic transducer with a piezoelectric element
US4458170A (en) * 1981-12-08 1984-07-03 Matsushita Electric Industrial Co., Ltd. Ultrasonic transmitter-receiver
US4418248A (en) * 1981-12-11 1983-11-29 Koss Corporation Dual element headphone
US4414436A (en) * 1982-04-19 1983-11-08 Pioneer Speaker Components, Inc. Narrow-frequency band acoustic transducer
US4461930A (en) * 1982-09-23 1984-07-24 Pioneer Speaker Components, Inc. Acoustic transducer with honeycomb diaphragm
DE3306801A1 (de) * 1983-02-26 1984-09-06 Rainer J. 5000 Köln Haas Kugelfoermiger hochtonlautsprecher mit piezoelektrischern antrieb
FR2574610A1 (fr) * 1984-09-05 1986-06-13 Sawafuji Dynameca Co Ltd Elements piezoelectriques vibrants et transducteurs piezoelectriques electroacoustiques utilisant de tels elements
GB2166022A (en) * 1984-09-05 1986-04-23 Sawafuji Dynameca Co Ltd Piezoelectric vibrator
FR2574609A1 (fr) * 1984-09-05 1986-06-13 Sawafuji Dynameca Co Ltd Elements piezoelectriques vibrants et transducteurs piezoelectriques electroacoustiques utilisant de tels elements
US5193119A (en) * 1985-09-02 1993-03-09 Franco Tontini Multiple loudspeaker
JPH0749914Y2 (ja) * 1986-01-29 1995-11-13 株式会社村田製作所 超音波トランスデユ−サ
DE4120681A1 (de) * 1990-08-04 1992-02-06 Bosch Gmbh Robert Ultraschallwandler
US5652801A (en) * 1994-05-02 1997-07-29 Aura Systems, Inc. Resonance damper for piezoelectric transducer
US5828768A (en) * 1994-05-11 1998-10-27 Noise Cancellation Technologies, Inc. Multimedia personal computer with active noise reduction and piezo speakers
US5638456A (en) * 1994-07-06 1997-06-10 Noise Cancellation Technologies, Inc. Piezo speaker and installation method for laptop personal computer and other multimedia applications
US5444324A (en) * 1994-07-25 1995-08-22 Western Atlas International, Inc. Mechanically amplified piezoelectric acoustic transducer
FR2734685B1 (fr) * 1995-05-23 1997-08-14 Silec Liaisons Elec Haut-parleur piezoelectrique
US5901231A (en) 1995-09-25 1999-05-04 Noise Cancellation Technologies, Inc. Piezo speaker for improved passenger cabin audio systems
JPH10294995A (ja) * 1997-04-21 1998-11-04 Matsushita Electric Ind Co Ltd 防滴型超音波送信器
US6181797B1 (en) 1999-01-09 2001-01-30 Noise Cancellation Technologies, Inc. Piezo speaker for improved passenger cabin audio systems
GB2404779B (en) * 2003-08-07 2005-08-03 Sonic Age Ltd Electro-acoustic device for creating patterns of particulate matter
US8354773B2 (en) * 2003-08-22 2013-01-15 Siemens Medical Solutions Usa, Inc. Composite acoustic absorber for ultrasound transducer backing material
JP4696487B2 (ja) * 2004-07-15 2011-06-08 リコープリンティングシステムズ株式会社 記録ヘッド及びこれを備えたインクジェット記録装置
US7415121B2 (en) * 2004-10-29 2008-08-19 Sonion Nederland B.V. Microphone with internal damping
EP2312740B1 (en) * 2008-07-14 2014-06-04 Murata Manufacturing Co. Ltd. Piezoelectric power generation device
CN102227919B (zh) * 2008-12-04 2014-04-09 株式会社村田制作所 超声波接收发送器
KR20120068613A (ko) * 2010-12-17 2012-06-27 삼성전기주식회사 압전 액추에이터
US9392372B2 (en) 2012-08-10 2016-07-12 Kyocera Corporation Acoustic generator, acoustic generation device, and electronic device
US9880671B2 (en) * 2013-10-08 2018-01-30 Sentons Inc. Damping vibrational wave reflections
US20160219373A1 (en) * 2015-01-23 2016-07-28 Knowles Electronics, Llc Piezoelectric Speaker Driver
KR101756673B1 (ko) * 2016-06-07 2017-07-25 주식회사 이엠텍 다공성 물질을 구비하는 마이크로스피커 인클로져
KR101788111B1 (ko) * 2016-06-09 2017-10-20 주식회사 이엠텍 다공성 물질을 구비하는 마이크로스피커 인클로져

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2518331A (en) * 1948-05-06 1950-08-08 Bell Telephone Labor Inc Piezoelectric crystal mounting
FR1376306A (fr) * 1963-02-07 1964-10-23 Brown Ltd S G Perfectionnements aux transducteurs électro-acoustiques
GB1159337A (en) * 1966-06-13 1969-07-23 Motorola Inc Piezoelectric Transducers
US3588381A (en) * 1967-08-28 1971-06-28 Motorola Inc Transducer having spaced apart oppositely flexing piezoelectric members
NL6813996A (enrdf_load_stackoverflow) * 1968-09-30 1970-04-01
US3698993A (en) * 1971-03-29 1972-10-17 Sonix Inc Sound deadening sheet material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5437135U (enrdf_load_stackoverflow) * 1977-08-18 1979-03-10
JPS54149236U (enrdf_load_stackoverflow) * 1978-04-07 1979-10-17
JPS5516597A (en) * 1978-07-17 1980-02-05 Siemens Ag Electroacoustic converter

Also Published As

Publication number Publication date
JPS5338924B2 (enrdf_load_stackoverflow) 1978-10-18
CA991304A (en) 1976-06-15
BE798009A (fr) 1973-10-10
DE2318027A1 (de) 1973-11-08
US3786202A (en) 1974-01-15
IT982996B (it) 1974-10-21
DE2318027C3 (de) 1975-10-30
FR2179883B1 (enrdf_load_stackoverflow) 1979-09-28
DE7313564U (de) 1973-11-22
NL173699C (nl) 1984-02-16
NL7305005A (enrdf_load_stackoverflow) 1973-10-12
DE2318027B2 (de) 1975-03-20
GB1399766A (en) 1975-07-02
FR2179883A1 (enrdf_load_stackoverflow) 1973-11-23
AU5415873A (en) 1974-10-10
HK74978A (en) 1978-12-29

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