FR643720A - Loudspeaker enhancements - Google Patents

Loudspeaker enhancements

Info

Publication number
FR643720A
FR643720A FR643720DA FR643720A FR 643720 A FR643720 A FR 643720A FR 643720D A FR643720D A FR 643720DA FR 643720 A FR643720 A FR 643720A
Authority
FR
France
Prior art keywords
enhancements
loudspeaker
loudspeaker enhancements
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.)
IMBAULT
Original Assignee
IMBAULT
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 IMBAULT filed Critical IMBAULT
Application granted granted Critical
Publication of FR643720A publication Critical patent/FR643720A/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 
    • H04R1/26—Spatial arrangements of separate transducers responsive 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)
FR643720D 1927-11-10 1927-11-10 Loudspeaker enhancements Expired FR643720A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR643720T 1927-11-10

Publications (1)

Publication Number Publication Date
FR643720A true FR643720A (en) 1928-09-21

Family

ID=8999655

Family Applications (1)

Application Number Title Priority Date Filing Date
FR643720D Expired FR643720A (en) 1927-11-10 1927-11-10 Loudspeaker enhancements

Country Status (1)

Country Link
FR (1) FR643720A (en)

Similar Documents

Publication Publication Date Title
FR698003A (en) Loudspeaker enhancements
FR695243A (en) Loudspeaker enhancements
FR36327E (en) Loudspeaker enhancements
FR628689A (en) Loudspeaker enhancements
FR638585A (en) Loudspeaker enhancements
FR638615A (en) Loudspeaker enhancements
FR643720A (en) Loudspeaker enhancements
FR655970A (en) Bumper enhancements
FR652082A (en) Switch enhancements
FR671511A (en) Veneer enhancements
FR36028E (en) Loudspeaker enhancements
FR682427A (en) Loudspeaker enhancements
FR679871A (en) Loudspeaker enhancements
FR634878A (en) Loud speaker
BE359759R (en) Loudspeaker enhancements
FR35609E (en) Loudspeaker enhancements
BE351188R (en) Loudspeaker enhancements
FR640227A (en) Loudspeaker enhancements
BE368564R (en) Loudspeaker enhancements
FR38139E (en) Loudspeaker enhancements
FR37341E (en) Loudspeaker enhancements
FR36830E (en) Loudspeaker enhancements
FR646306A (en) Loudspeaker enhancements
FR36634E (en) Loudspeaker enhancements
FR622666A (en) Loudspeaker enhancements