FR657396A - Improvements to sound reproduction systems - Google Patents

Improvements to sound reproduction systems

Info

Publication number
FR657396A
FR657396A FR657396DA FR657396A FR 657396 A FR657396 A FR 657396A FR 657396D A FR657396D A FR 657396DA FR 657396 A FR657396 A FR 657396A
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)
Inventor
William Bones Whitmore
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
Application granted granted Critical
Publication of FR657396A publication Critical patent/FR657396A/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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
FR657396D 1927-08-15 1928-06-15 Improvements to sound reproduction systems Expired FR657396A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US212944A US1672796A (en) 1927-08-15 1927-08-15 Sound reproducer

Publications (1)

Publication Number Publication Date
FR657396A true FR657396A (en) 1929-05-22

Family

ID=22793058

Family Applications (1)

Application Number Title Priority Date Filing Date
FR657396D Expired FR657396A (en) 1927-08-15 1928-06-15 Improvements to sound reproduction systems

Country Status (4)

Country Link
US (1) US1672796A (en)
BE (1) BE352291A (en)
FR (1) FR657396A (en)
GB (1) GB295625A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2519322A (en) * 1947-03-06 1950-08-15 Stewart A Downs Molasses dispenser for cattle
US2837340A (en) * 1952-04-07 1958-06-03 Golda A Duncan Mechanical sound reproducing device
US2853146A (en) * 1955-02-07 1958-09-23 George A Coates Transmitter with vibratile air coupling
US3985201A (en) * 1974-10-24 1976-10-12 Kloster Glenn R Infinite sound reproduction chamber
US4039044A (en) * 1974-11-25 1977-08-02 Oskar Heil Low frequency electro-acoustic transducer with interconnected diaphragms interleaved with fixed diaphragms
US4903308A (en) * 1988-02-10 1990-02-20 Linaeum Corporation Audio transducer with controlled flexibility diaphragm
US5198624A (en) * 1988-02-10 1993-03-30 Linaeum Corporation Audio transducer with controlled flexibility diaphragm
US6061461A (en) * 1998-05-08 2000-05-09 Paddock; Paul W. Audio transducer

Also Published As

Publication number Publication date
US1672796A (en) 1928-06-05
BE352291A (en)
GB295625A (en) 1929-08-29

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