FR668755A - Advanced training in loudspeaker devices - Google Patents

Advanced training in loudspeaker devices

Info

Publication number
FR668755A
FR668755A FR668755DA FR668755A FR 668755 A FR668755 A FR 668755A FR 668755D A FR668755D A FR 668755DA FR 668755 A FR668755 A FR 668755A
Authority
FR
France
Prior art keywords
advanced training
loudspeaker devices
loudspeaker
devices
training
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.)
ARNAUD ETS
Original Assignee
ARNAUD ETS
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 ARNAUD ETS filed Critical ARNAUD ETS
Application granted granted Critical
Publication of FR668755A publication Critical patent/FR668755A/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR668755D 1928-05-12 1928-05-12 Advanced training in loudspeaker devices Expired FR668755A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR668755T 1928-05-12

Publications (1)

Publication Number Publication Date
FR668755A true FR668755A (en) 1929-11-06

Family

ID=9015261

Family Applications (1)

Application Number Title Priority Date Filing Date
FR668755D Expired FR668755A (en) 1928-05-12 1928-05-12 Advanced training in loudspeaker devices

Country Status (1)

Country Link
FR (1) FR668755A (en)

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