FR672303A - Improvements in devices for transforming sound waves into electrical energy - Google Patents

Improvements in devices for transforming sound waves into electrical energy

Info

Publication number
FR672303A
FR672303A FR672303DA FR672303A FR 672303 A FR672303 A FR 672303A FR 672303D A FR672303D A FR 672303DA FR 672303 A FR672303 A FR 672303A
Authority
FR
France
Prior art keywords
devices
electrical energy
sound waves
transforming sound
transforming
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.)
DOMINION GRAMOPHONE RECORDS FO
Original Assignee
DOMINION GRAMOPHONE RECORDS FO
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 DOMINION GRAMOPHONE RECORDS FO filed Critical DOMINION GRAMOPHONE RECORDS FO
Application granted granted Critical
Publication of FR672303A publication Critical patent/FR672303A/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)
  • Circuit For Audible Band Transducer (AREA)
FR672303D 1928-04-28 1929-03-29 Improvements in devices for transforming sound waves into electrical energy Expired FR672303A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US310519XA 1928-04-28 1928-04-28

Publications (1)

Publication Number Publication Date
FR672303A true FR672303A (en) 1929-12-26

Family

ID=21857411

Family Applications (1)

Application Number Title Priority Date Filing Date
FR672303D Expired FR672303A (en) 1928-04-28 1929-03-29 Improvements in devices for transforming sound waves into electrical energy

Country Status (2)

Country Link
FR (1) FR672303A (en)
GB (1) GB310519A (en)

Also Published As

Publication number Publication date
GB310519A (en) 1930-07-07

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