ZA775530B - Improvements in or relating to electro-acoustic transducers - Google Patents

Improvements in or relating to electro-acoustic transducers

Info

Publication number
ZA775530B
ZA775530B ZA00775530A ZA775530A ZA775530B ZA 775530 B ZA775530 B ZA 775530B ZA 00775530 A ZA00775530 A ZA 00775530A ZA 775530 A ZA775530 A ZA 775530A ZA 775530 B ZA775530 B ZA 775530B
Authority
ZA
South Africa
Prior art keywords
electro
relating
acoustic transducers
transducers
acoustic
Prior art date
Application number
ZA00775530A
Other languages
English (en)
Inventor
W Cragg
A Lawson
Original Assignee
Int Standard Electric Corp
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 by Int Standard Electric Corp filed Critical Int Standard Electric Corp
Publication of ZA775530B publication Critical patent/ZA775530B/xx

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
    • H04R17/005—Piezoelectric transducers; Electrostrictive transducers using a piezoelectric polymer
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S310/00—Electrical generator or motor structure
    • Y10S310/80—Piezoelectric polymers, e.g. PVDF

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)
ZA00775530A 1976-09-21 1977-09-15 Improvements in or relating to electro-acoustic transducers ZA775530B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB39063/76A GB1593271A (en) 1976-09-21 1976-09-21 Electro-acoustic transducers

Publications (1)

Publication Number Publication Date
ZA775530B true ZA775530B (en) 1978-08-30

Family

ID=10407417

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00775530A ZA775530B (en) 1976-09-21 1977-09-15 Improvements in or relating to electro-acoustic transducers

Country Status (18)

Country Link
US (1) US4186323A (xx)
JP (2) JPS5339114A (xx)
AR (1) AR212933A1 (xx)
AU (2) AU508882B2 (xx)
BE (1) BE858823A (xx)
BR (1) BR7706220A (xx)
CA (1) CA1114492A (xx)
CH (1) CH623700A5 (xx)
DE (1) DE2742133A1 (xx)
DK (1) DK148870C (xx)
ES (1) ES462476A1 (xx)
GB (1) GB1593271A (xx)
IT (1) IT1086321B (xx)
NL (1) NL7710161A (xx)
NZ (1) NZ185170A (xx)
PL (1) PL200966A1 (xx)
SE (1) SE413971B (xx)
ZA (1) ZA775530B (xx)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2902545C2 (de) * 1979-01-24 1985-04-04 Akzo Gmbh, 5600 Wuppertal Faden mit Leitschichten
FR2465387A1 (fr) * 1979-09-12 1981-03-20 Audax Transducteur piezoelectrique
FR2473242A1 (fr) * 1980-01-08 1981-07-10 Thomson Csf Transducteur electroacoustique a dome actif
FR2521380B2 (fr) * 1980-02-22 1987-11-27 Lectret Sa Transducteur acoustique
DE3009068A1 (de) * 1980-03-10 1981-09-24 Reinhard Dipl.-Ing. Lerch Piezopolymer-wandler mit fester membranunterstuetzung
FR2498406A1 (fr) * 1981-01-16 1982-07-23 Thomson Csf Structure de transducteur electromecanique
GB8325861D0 (en) * 1983-09-28 1983-11-02 Syrinx Presicion Instr Ltd Force transducer
DE3437488A1 (de) * 1984-10-12 1986-04-17 Richard Wolf Gmbh, 7134 Knittlingen Schallsender
US4654546A (en) * 1984-11-20 1987-03-31 Kari Kirjavainen Electromechanical film and procedure for manufacturing same
AU588933B2 (en) * 1985-12-10 1989-09-28 Alcatel Australia Limited Improvements in transducers
AU594852B2 (en) * 1986-11-07 1990-03-15 Gec Marconi Systems Pty Limited A composite sonar transducer for operation as a low frequency underwater acoustic source
JPH01501421A (ja) * 1986-11-07 1989-05-18 プレッシー　オーストラリア　プロプライエタリー　リミテッド 低周波の水中音源として動作する複合ソナートランスジューサ
US4825116A (en) * 1987-05-07 1989-04-25 Yokogawa Electric Corporation Transmitter-receiver of ultrasonic distance measuring device
FR2625640B1 (fr) * 1987-12-30 1990-06-22 Inst Francais Du Petrole Capteur piezo-electrique tubulaire a grande sensibilite
US5185549A (en) * 1988-12-21 1993-02-09 Steven L. Sullivan Dipole horn piezoelectric electro-acoustic transducer design
US5621264A (en) * 1995-08-07 1997-04-15 Ocean Power Technologies, Inc. Water craft using piezoelectric materials
RO119056B1 (ro) * 1995-09-02 2004-02-27 Verityágroupáplc Traductor de vibraţii inerţial şi difuzor pentru utilizarea acestuia
US5901231A (en) * 1995-09-25 1999-05-04 Noise Cancellation Technologies, Inc. Piezo speaker for improved passenger cabin audio systems
DE19733233C1 (de) * 1997-08-01 1998-09-17 Wolf Gmbh Richard Elektroakustischer Wandler
US6438242B1 (en) * 1999-09-07 2002-08-20 The United States Of America As Represented By The Secretary Of The Navy Acoustic transducer panel
FI108204B (fi) * 1999-11-25 2001-11-30 Kari Johannes Kirjavainen Kalvo energioiden muuntamiseksi
JP2004532743A (ja) * 2000-10-25 2004-10-28 ワシントン ステート ユニバーシティ リサーチ ファウンデーション 圧電マイクロトランスデューサ、その使用法および製造法
US6847155B2 (en) * 2001-04-24 2005-01-25 Clemson University Electroactive apparatus and methods
US6937736B2 (en) * 2001-08-06 2005-08-30 Measurement Specialties, Inc. Acoustic sensor using curved piezoelectric film
NO314555B1 (no) * 2002-04-08 2003-04-07 Meditron Asa Piezoelektrisk vibrasjonssensor
JP5064384B2 (ja) * 2005-05-31 2012-10-31 エモ・ラブズ・インコーポレーテッド 環境状態に感応するダイアフラム膜及び支持構造
EP2218120A2 (en) * 2007-10-29 2010-08-18 Humdinger Wind Energy LLC Energy converter with transducers for converting fluid-induced movements or stress to electricity
WO2009067669A1 (en) * 2007-11-21 2009-05-28 Emo Labs, Inc.. Wireless loudspeaker
US8189851B2 (en) 2009-03-06 2012-05-29 Emo Labs, Inc. Optically clear diaphragm for an acoustic transducer and method for making same
WO2011020100A1 (en) * 2009-08-14 2011-02-17 Emo Labs, Inc System to generate electrical signals for a loudspeaker
JP6022545B2 (ja) * 2012-03-30 2016-11-09 住友理工株式会社 スピーカー
JP5993946B2 (ja) * 2012-05-24 2016-09-21 住友理工株式会社 スピーカー
WO2014143927A2 (en) 2013-03-15 2014-09-18 Emo Labs, Inc. Acoustic transducers
USD741835S1 (en) 2013-12-27 2015-10-27 Emo Labs, Inc. Speaker
USD733678S1 (en) 2013-12-27 2015-07-07 Emo Labs, Inc. Audio speaker
USD748072S1 (en) 2014-03-14 2016-01-26 Emo Labs, Inc. Sound bar audio speaker
EP3153948B1 (en) * 2014-06-09 2022-09-28 Murata Manufacturing Co., Ltd. Vibrating device and haptic device
WO2017002573A1 (ja) * 2015-06-29 2017-01-05 富士フイルム株式会社 電気音響変換器

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1967130C2 (de) * 1968-01-25 1982-04-01 Pioneer Electronic Corp., Tokyo Mechanisch-elektrisch bzw. elektrisch-mechanischer Wandler
DE2116573A1 (de) * 1971-04-05 1972-10-19 Tn Korperschallkompensierendes Mikrofon
JPS4829420A (xx) * 1971-08-20 1973-04-19
US3816774A (en) * 1972-01-28 1974-06-11 Victor Company Of Japan Curved piezoelectric elements
JPS4926285U (xx) * 1972-06-07 1974-03-06
JPS4924125A (xx) * 1972-06-26 1974-03-04
JPS5118197B2 (xx) * 1972-07-20 1976-06-08
JPS5197421A (en) * 1975-02-24 1976-08-27 Atsudengatadenki onkyohenkanki

Also Published As

Publication number Publication date
AR212933A1 (es) 1978-11-15
DK148870C (da) 1986-04-21
DK148870B (da) 1985-10-28
IT1086321B (it) 1985-05-28
AU2877377A (en) 1979-03-22
CH623700A5 (xx) 1981-06-15
NL7710161A (nl) 1978-03-23
ES462476A1 (es) 1978-07-16
BR7706220A (pt) 1978-07-04
NZ185170A (en) 1983-05-31
DK416277A (da) 1978-03-22
US4186323A (en) 1980-01-29
AU508882B2 (en) 1980-04-03
JPS5339114A (en) 1978-04-10
JPS5546400U (xx) 1980-03-26
PL200966A1 (pl) 1978-07-17
CA1114492A (en) 1981-12-15
AU5584380A (en) 1980-06-26
SE7710433L (sv) 1978-03-22
SE413971B (sv) 1980-06-30
GB1593271A (en) 1981-07-15
BE858823A (nl) 1978-03-20
AU518390B2 (en) 1981-10-01
DE2742133A1 (de) 1978-03-23

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