FR595818A - Improvements to sound reproduction systems - Google Patents

Improvements to sound reproduction systems

Info

Publication number
FR595818A
FR595818A FR595818DA FR595818A FR 595818 A FR595818 A FR 595818A FR 595818D A FR595818D A FR 595818DA FR 595818 A FR595818 A FR 595818A
Authority
FR
France
Prior art keywords
sound reproduction
reproduction systems
systems
sound
reproduction
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
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR595818A publication Critical patent/FR595818A/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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • 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 
    • H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
FR595818D 1924-03-27 1925-03-26 Improvements to sound reproduction systems Expired FR595818A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US702452A US1631646A (en) 1924-03-27 1924-03-27 Sound-reproducing apparatus

Publications (1)

Publication Number Publication Date
FR595818A true FR595818A (en) 1925-10-09

Family

ID=24821277

Family Applications (3)

Application Number Title Priority Date Filing Date
FR595818D Expired FR595818A (en) 1924-03-27 1925-03-26 Improvements to sound reproduction systems
FR30476D Expired FR30476E (en) 1924-03-27 1925-03-26 Improvements to sound reproduction systems
FR47708D Expired FR47708E (en) 1924-03-27 1936-10-17 Improvements to sound reproduction systems

Family Applications After (2)

Application Number Title Priority Date Filing Date
FR30476D Expired FR30476E (en) 1924-03-27 1925-03-26 Improvements to sound reproduction systems
FR47708D Expired FR47708E (en) 1924-03-27 1936-10-17 Improvements to sound reproduction systems

Country Status (4)

Country Link
US (1) US1631646A (en)
BE (3) BE417960A (en)
FR (3) FR595818A (en)
GB (3) GB231421A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2445276A (en) * 1945-05-04 1948-07-13 Massa Frank Electrodynamic loudspeaker
GB774121A (en) * 1954-03-18 1957-05-08 Ferranti Ltd Improvements relating to gramophone pick-ups
US6704425B1 (en) * 1999-11-19 2004-03-09 Virtual Bass Technologies, Llc System and method to enhance reproduction of sub-bass frequencies
FR2955446B1 (en) 2010-01-15 2015-06-05 Phl Audio ELECTRODYNAMIC TRANSDUCER WITH DOME AND FLOATING SUSPENSION
FR2955445B1 (en) 2010-01-15 2013-06-07 Phl Audio ELECTRODYNAMIC TRANSDUCER WITH DOME AND INTERNAL SUSPENSION
FR2955444B1 (en) 2010-01-15 2012-08-03 Phl Audio COAXIAL SPEAKER SYSTEM WITH COMPRESSION CHAMBER

Also Published As

Publication number Publication date
GB231421A (en) 1925-09-17
FR30476E (en) 1926-07-17
BE421801A (en) 1937-06-30
US1631646A (en) 1927-06-07
GB231420A (en) 1925-08-20
GB464418A (en) 1937-04-19
FR47708E (en) 1937-06-22
BE324881A (en) 1949-09-30
BE417960A (en) 1936-11-30

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