FR605491A - Improvements to sound reproduction systems - Google Patents

Improvements to sound reproduction systems

Info

Publication number
FR605491A
FR605491A FR605491DA FR605491A FR 605491 A FR605491 A FR 605491A FR 605491D A FR605491D A FR 605491DA FR 605491 A FR605491 A FR 605491A
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 FR605491A publication Critical patent/FR605491A/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
    • H04R11/00—Transducers of moving-armature or moving-core type

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
FR605491D 1924-09-15 1925-09-14 Improvements to sound reproduction systems Expired FR605491A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US737660A US1765257A (en) 1924-09-15 1924-09-15 Loud-speaker

Publications (1)

Publication Number Publication Date
FR605491A true FR605491A (en) 1926-05-27

Family

ID=24964773

Family Applications (1)

Application Number Title Priority Date Filing Date
FR605491D Expired FR605491A (en) 1924-09-15 1925-09-14 Improvements to sound reproduction systems

Country Status (2)

Country Link
US (1) US1765257A (en)
FR (1) FR605491A (en)

Also Published As

Publication number Publication date
US1765257A (en) 1930-06-17

Similar Documents

Publication Publication Date Title
FR604370A (en) Improvements to sound reproducing devices
FR657396A (en) Improvements to sound reproduction systems
FR47708E (en) Improvements to sound reproduction systems
FR644982A (en) Improvements to sound reproduction systems
FR592738A (en) Improvements to sound-producing devices
FR613217A (en) Improvements to sound reproduction systems
FR605491A (en) Improvements to sound reproduction systems
FR607912A (en) Improvements to sound transmitters and receivers
FR618595A (en) Improvements to sound reproduction systems
FR605544A (en) Improvements to sound reproduction systems
FR660494A (en) Improvements to sound reproduction systems
FR29528E (en) Improvements to acoustic devices
FR549782A (en) Improvements to sound reproduction systems
FR583412A (en) Improvements to sound amplifiers
FR680259A (en) Improvements to sound reproduction systems
FR599509A (en) Improvements to sound amplifiers
FR588100A (en) Improvements to loudspeaker receivers
FR668222A (en) Improvements to sound reproduction devices
FR685841A (en) Improvements to sound reproduction devices
FR690953A (en) Improvements to sound reproduction devices
FR602427A (en) Improvements to the acoustic horns of loudspeaker devices
FR557375A (en) Improvements to sound amplifiers
FR657136A (en) Improvements to sound reproduction systems
FR545670A (en) Improvements to sound emitting devices
FR29554E (en) Sound reproducer