FR660494A - Improvements to sound reproduction systems - Google Patents

Improvements to sound reproduction systems

Info

Publication number
FR660494A
FR660494A FR660494DA FR660494A FR 660494 A FR660494 A FR 660494A FR 660494D A FR660494D A FR 660494DA FR 660494 A FR660494 A FR 660494A
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.)
BRITISH TALKING PICTURES Ltd
Original Assignee
BRITISH TALKING PICTURES 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 BRITISH TALKING PICTURES Ltd filed Critical BRITISH TALKING PICTURES Ltd
Application granted granted Critical
Publication of FR660494A publication Critical patent/FR660494A/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
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
    • H04R3/14—Cross-over networks

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR660494D 1927-09-17 1928-09-15 Improvements to sound reproduction systems Expired FR660494A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US660494XA 1927-09-17 1927-09-17

Publications (1)

Publication Number Publication Date
FR660494A true FR660494A (en) 1929-07-11

Family

ID=22066937

Family Applications (1)

Application Number Title Priority Date Filing Date
FR660494D Expired FR660494A (en) 1927-09-17 1928-09-15 Improvements to sound reproduction systems

Country Status (1)

Country Link
FR (1) FR660494A (en)

Similar Documents

Publication Publication Date Title
FR636818A (en) Improvements to acoustic devices
FR657396A (en) Improvements to sound reproduction systems
FR604370A (en) Improvements to sound reproducing devices
FR669581A (en) Improvements to acoustic devices
FR644982A (en) Improvements to sound reproduction systems
FR30476E (en) Improvements to sound reproduction systems
FR638286A (en) Sound reproducer
FR613218A (en) Improvements to sound reproduction systems
FR660494A (en) Improvements to sound reproduction systems
FR618595A (en) Improvements to sound reproduction systems
FR680259A (en) Improvements to sound reproduction systems
FR657136A (en) Improvements to sound reproduction systems
FR605491A (en) Improvements to sound reproduction systems
FR699474A (en) Improvements to sound reproduction systems
FR646684A (en) Sound reproduction
FR668222A (en) Improvements to sound reproduction devices
FR35192E (en) Improvements to acoustic devices
FR685841A (en) Improvements to sound reproduction devices
FR690953A (en) Improvements to sound reproduction devices
FR599509A (en) Improvements to sound amplifiers
FR681263A (en) Improvements to sound amplifying devices
FR605544A (en) Improvements to sound reproduction systems
FR549782A (en) Improvements to sound reproduction systems
FR694448A (en) Improvements to sound reproduction systems
FR716534A (en) Improvements to acoustic devices