CA963570A - Electroacoustic transducer - Google Patents

Electroacoustic transducer

Info

Publication number: CA963570A
Authority: CA; Canada
Prior art keywords: electroacoustic transducer; electroacoustic; transducer
Prior art date: 1971-05-17
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.): Expired

Application number

CA132,362A

Other versions

CA132362S (en

Inventor

August F. Mostardo (Jr.)

Elmer V. Carlson

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Industrial Research Products Inc

Original Assignee

Industrial Research Products Inc

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.)

1971-05-17

Filing date

1972-01-13

Publication date

1975-02-25

1972-01-13 Application filed by Industrial Research Products Inc filed Critical Industrial Research Products Inc

1975-02-25 Application granted granted Critical

1975-02-25 Publication of CA963570A publication Critical patent/CA963570A/en

Status 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
- H04R11/00—Transducers of moving-armature or moving-core type
- H04R11/04—Microphones
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R11/00—Transducers of moving-armature or moving-core type
- H04R11/06—Telephone receivers

Landscapes

Physics & Mathematics (AREA)
Electromagnetism (AREA)
Engineering & Computer Science (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)
Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

CA132,362A 1971-05-17 1972-01-13 Electroacoustic transducer Expired CA963570A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US14401971A	1971-05-17	1971-05-17

Publications (1)

Publication Number	Publication Date
CA963570A true CA963570A (en)	1975-02-25

Family

ID=22506712

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA132,362A Expired CA963570A (en)	1971-05-17	1972-01-13	Electroacoustic transducer

Country Status (7)

Country	Link
US (1)	US3766332A (en)
JP (1)	JPS5224842B1 (en)
CA (1)	CA963570A (en)
DK (1)	DK139370B (en)
FR (1)	FR2138061B1 (en)
GB (1)	GB1366613A (en)
NL (1)	NL164722C (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NL1004669C2 (en) *	1996-12-02	1998-06-03	Microtronic Nederland Bv	Transducer.
US6658134B1 (en)	1999-08-16	2003-12-02	Sonionmicrotronic Nederland B.V.	Shock improvement for an electroacoustic transducer
WO2001052594A2 (en) *	2000-01-07	2001-07-19	Knowles Electronics, Llc	Vibration balanced receiver
US7164776B2 (en) *	2000-01-07	2007-01-16	Knowles Electronics, Llc.	Vibration balanced receiver
US7072482B2 (en)	2002-09-06	2006-07-04	Sonion Nederland B.V.	Microphone with improved sound inlet port
JP5265373B2 (en)	2005-11-11	2013-08-14	フィテックシステムズリミテッド	Noise elimination earphone
US8135163B2 (en) *	2007-08-30	2012-03-13	Klipsch Group, Inc.	Balanced armature with acoustic low pass filter
JP2009153103A (en) *	2007-10-02	2009-07-09	Phitek Systems Ltd	Component for noise reducing earphone
EP2129114A3 (en) *	2008-05-29	2011-11-02	Phitek Systems Limited	Media enhancement module
WO2010025351A2 (en) *	2008-08-29	2010-03-04	The Peen State Research Foundation	Methods and apparatus for reduced distortion balanced armature devices
US20110002474A1 (en) *	2009-01-29	2011-01-06	Graeme Colin Fuller	Active Noise Reduction System Control
EP2226902A3 (en) *	2009-03-06	2013-03-13	Phitek Systems Limited	In-flight entertainment system connector
US20110188668A1 (en) *	2009-09-23	2011-08-04	Mark Donaldson	Media delivery system
US9818394B2 (en) *	2009-11-30	2017-11-14	Graeme Colin Fuller	Realisation of controller transfer function for active noise cancellation
US8929082B2 (en)	2010-05-17	2015-01-06	Thales Avionics, Inc.	Airline passenger seat modular user interface device
US9487295B2 (en)	2010-11-15	2016-11-08	William James Sim	Vehicle media distribution system using optical transmitters
WO2012165976A1 (en)	2011-06-01	2012-12-06	Phitek Systems Limited	In-ear device incorporating active noise reduction

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB392318A (en) *	1932-03-05	1933-05-18	Radiophon G M B H	Improvements in loud-speaking telephones or loud-speaker apparatus
US2297218A (en) *	1937-04-24	1942-09-29	Hans E Henrich	Loud-speaker
NL106495C (en) *	1956-03-06
US3002057A (en) *	1956-03-29	1961-09-26	Vigren Sten Daniel	Polarized electromagnetic device
US3111187A (en) *	1959-11-23	1963-11-19	H J Leak & Company Ltd	Diaphragm for electro acoustic transducer
GB1058212A (en) *	1964-04-24	1967-02-08	Gen Electric Co Ltd	Improvements in or relating to telephone receivers
US3617653A (en) *	1967-05-16	1971-11-02	Tibbetts Industries	Magnetic reed type acoustic transducer with improved armature

1971
- 1971-05-17 US US00144019A patent/US3766332A/en not_active Expired - Lifetime
1972
- 1972-01-13 CA CA132,362A patent/CA963570A/en not_active Expired
- 1972-02-09 JP JP47013639A patent/JPS5224842B1/ja active Pending
- 1972-02-14 GB GB676072A patent/GB1366613A/en not_active Expired
- 1972-02-21 NL NL7202226.A patent/NL164722C/en not_active IP Right Cessation
- 1972-05-17 DK DK245572AA patent/DK139370B/en not_active IP Right Cessation
- 1972-05-17 FR FR7217699A patent/FR2138061B1/fr not_active Expired

Also Published As

Publication number	Publication date
NL164722C (en)	1981-01-15
DK139370B (en)	1979-02-05
FR2138061A1 (en)	1972-12-29
DK139370C (en)	1979-07-09
DE2224148B2 (en)	1976-12-09
US3766332A (en)	1973-10-16
DE2224148A1 (en)	1972-12-07
FR2138061B1 (en)	1975-08-01
JPS5224842B1 (en)	1977-07-04
GB1366613A (en)	1974-09-11
NL7202226A (en)	1972-11-21

Publication	Publication Date	Title
CA989972A (en)	1976-05-25	Electroacoustic transducer
CA971288A (en)	1975-07-15	Piezoelectric-type electroacoustic transducer
AU463235B2 (en)	1975-07-17	Transducer
AU465715B2 (en)	1975-10-02	An electroacoustic transducer device
CA979113A (en)	1975-12-02	Electro-acoustic transducer
CA963570A (en)	1975-02-25	Electroacoustic transducer
AU469106B2 (en)	1976-02-05	Transducers
CA982687A (en)	1976-01-27	Electro-acoustic transducer
CA963571A (en)	1975-02-25	Transducer
CA991303A (en)	1976-06-15	Transducer
AU461117B2 (en)	1975-05-15	Electroacoustic transducer
CA969637A (en)	1975-06-17	Pressure-to-electric transducer
AU463776B2 (en)	1975-08-07	Diaphragm
CA879324A (en)	1971-08-24	Loudspeakers
CA885139A (en)	1971-11-02	Magnetoelectrical transducer
CA876538A (en)	1971-07-27	Transducer
CA882247A (en)	1971-09-28	Transducer
CA922420A (en)	1973-03-06	Photo-piezoelectric transducer
CA887807A (en)	1971-12-07	Fluidic-electro transducer
CA865866A (en)	1971-03-09	Transducer
CA869151A (en)	1971-04-20	Electrostatic electroacoustic transducer
CA836173A (en)	1970-03-03	Electro-acoustic transducer
CA882944A (en)	1971-10-05	Mechano-electrical transducer
CA865343A (en)	1971-03-02	Mechano-electrical transducer
CA972456A (en)	1975-08-05	Narrow band acoustical transducer