DK428888D0 - SPEAKER DEVICE - Google Patents

SPEAKER DEVICE

Info

Publication number
DK428888D0
DK428888D0 DK428888A DK428888A DK428888D0 DK 428888 D0 DK428888 D0 DK 428888D0 DK 428888 A DK428888 A DK 428888A DK 428888 A DK428888 A DK 428888A DK 428888 D0 DK428888 D0 DK 428888D0
Authority
DK
Denmark
Prior art keywords
speaker device
speaker
Prior art date
Application number
DK428888A
Other languages
Danish (da)
Other versions
DK428888A (en
Inventor
Wolfgang Spors
Original Assignee
Wolfgang Spors
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
Priority claimed from PCT/DE1987/000447 external-priority patent/WO1988004514A1/en
Application filed by Wolfgang Spors filed Critical Wolfgang Spors
Publication of DK428888D0 publication Critical patent/DK428888D0/en
Publication of DK428888A publication Critical patent/DK428888A/en

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
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
DK428888A 1986-12-02 1988-08-01 SPEAKER DEVICE DK428888A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3641094 1986-12-02
PCT/DE1987/000447 WO1988004514A1 (en) 1986-12-02 1987-10-02 Loudspeaker installation

Publications (2)

Publication Number Publication Date
DK428888D0 true DK428888D0 (en) 1988-08-01
DK428888A DK428888A (en) 1988-08-01

Family

ID=6315247

Family Applications (1)

Application Number Title Priority Date Filing Date
DK428888A DK428888A (en) 1986-12-02 1988-08-01 SPEAKER DEVICE

Country Status (3)

Country Link
KR (1) KR890700299A (en)
DE (2) DE3790814D2 (en)
DK (1) DK428888A (en)

Also Published As

Publication number Publication date
KR890700299A (en) 1989-03-11
DE3764649D1 (en) 1990-10-04
DE3790814D2 (en) 1990-02-01
DK428888A (en) 1988-08-01

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Legal Events

Date Code Title Description
AHS Application shelved for other reasons than non-payment