FR659922A - Improvements in apparatus for reproducing or recording sound waves - Google Patents

Improvements in apparatus for reproducing or recording sound waves

Info

Publication number
FR659922A
FR659922A FR659922DA FR659922A FR 659922 A FR659922 A FR 659922A FR 659922D A FR659922D A FR 659922DA FR 659922 A FR659922 A FR 659922A
Authority
FR
France
Prior art keywords
reproducing
sound waves
recording sound
recording
waves
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.)
Cliftophone & Records Ltd
Original Assignee
Cliftophone & Records Ltd
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 Cliftophone & Records Ltd filed Critical Cliftophone & Records Ltd
Application granted granted Critical
Publication of FR659922A publication Critical patent/FR659922A/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)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
FR659922D 1927-09-26 1928-09-03 Improvements in apparatus for reproducing or recording sound waves Expired FR659922A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2534827A GB304805A (en) 1927-09-26 1927-09-26 Improvements in or relating to apparatus for reproducing or recording sound waves

Publications (1)

Publication Number Publication Date
FR659922A true FR659922A (en) 1929-07-04

Family

ID=10226193

Family Applications (1)

Application Number Title Priority Date Filing Date
FR659922D Expired FR659922A (en) 1927-09-26 1928-09-03 Improvements in apparatus for reproducing or recording sound waves

Country Status (2)

Country Link
FR (1) FR659922A (en)
GB (1) GB304805A (en)

Also Published As

Publication number Publication date
GB304805A (en) 1929-01-28

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