FR699474A - Improvements to sound reproduction systems - Google Patents

Improvements to sound reproduction systems

Info

Publication number
FR699474A
FR699474A FR699474DA FR699474A FR 699474 A FR699474 A FR 699474A FR 699474D A FR699474D A FR 699474DA FR 699474 A FR699474 A FR 699474A
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.)
Societe des Etablissements Gaumont
Original Assignee
Societe des Etablissements Gaumont
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 Societe des Etablissements Gaumont filed Critical Societe des Etablissements Gaumont
Application granted granted Critical
Publication of FR699474A publication Critical patent/FR699474A/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
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR699474D 1929-10-24 1929-10-24 Improvements to sound reproduction systems Expired FR699474A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR699474T 1929-10-24

Publications (1)

Publication Number Publication Date
FR699474A true FR699474A (en) 1931-02-16

Family

ID=9048268

Family Applications (1)

Application Number Title Priority Date Filing Date
FR699474D Expired FR699474A (en) 1929-10-24 1929-10-24 Improvements to sound reproduction systems

Country Status (1)

Country Link
FR (1) FR699474A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1928846A1 (en) * 1968-06-07 1969-12-11 Hitachi Ltd Regulator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1928846A1 (en) * 1968-06-07 1969-12-11 Hitachi Ltd Regulator

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