FR1461089A - Loud speaker - Google Patents

Loud speaker

Info

Publication number
FR1461089A
FR1461089A FR43184A FR43184A FR1461089A FR 1461089 A FR1461089 A FR 1461089A FR 43184 A FR43184 A FR 43184A FR 43184 A FR43184 A FR 43184A FR 1461089 A FR1461089 A FR 1461089A
Authority
FR
France
Prior art keywords
loud speaker
loud
speaker
Prior art date
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
FR43184A
Other languages
French (fr)
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.)
Motorola Solutions Inc
Original Assignee
Motorola 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.)
Filing date
Publication date
Application filed by Motorola Inc filed Critical Motorola Inc
Application granted granted Critical
Publication of FR1461089A publication Critical patent/FR1461089A/en
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
    • 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 
    • H04R1/30—Combinations of transducers with horns, e.g. with mechanical matching means, i.e. front-loaded horns
FR43184A 1965-01-06 1965-12-21 Loud speaker Expired FR1461089A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US42368365A 1965-01-06 1965-01-06
US46476965A 1965-06-17 1965-06-17

Publications (1)

Publication Number Publication Date
FR1461089A true FR1461089A (en) 1966-12-10

Family

ID=27026100

Family Applications (1)

Application Number Title Priority Date Filing Date
FR43184A Expired FR1461089A (en) 1965-01-06 1965-12-21 Loud speaker

Country Status (5)

Country Link
US (1) US3535471A (en)
DE (1) DE1462174A1 (en)
ES (1) ES321223A1 (en)
FR (1) FR1461089A (en)
GB (1) GB1083477A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU676639B2 (en) * 1994-05-20 1997-03-13 Shinsei Corporation Sound generating device
US6396197B1 (en) * 1995-12-22 2002-05-28 Speaker Acquisition Sub, A Cayman Island Corporation Piezoelectric speaker
JP2894276B2 (en) * 1996-05-02 1999-05-24 日本電気株式会社 Piezo acoustic transducer
GB2445597A (en) * 2007-01-09 2008-07-16 William Wood Magnetostrictive compression type loudspeaker with phasing plug

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1802781A (en) * 1927-05-06 1931-04-28 Cleveland Trust Co Piezo-electric device
US1688744A (en) * 1927-05-25 1928-10-23 Wired Radio Inc Multiple acoustic device
US2479987A (en) * 1947-10-11 1949-08-23 Brush Dev Co Multiplate electrotransducer
US3068446A (en) * 1958-08-21 1962-12-11 Stanley L Ehrlich Tubular electrostrictive transducer with spaced electrodes and loading masses
US3215977A (en) * 1960-07-27 1965-11-02 Clevite Corp Acoustic transducer
GB1048602A (en) * 1964-01-30 1966-11-16 Emi Ltd Improvements relating to moving coil loudspeakers and the like

Also Published As

Publication number Publication date
GB1083477A (en) 1967-09-13
ES321223A1 (en) 1966-12-16
DE1462174A1 (en) 1969-02-06
US3535471A (en) 1970-10-20

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