SE8704844L - Loudspeaker with improved bass reproduction - has cavity acoustically coupled with speaker membrane and surroundings of cabinet via apertures - Google Patents

Loudspeaker with improved bass reproduction - has cavity acoustically coupled with speaker membrane and surroundings of cabinet via apertures

Info

Publication number
SE8704844L
SE8704844L SE8704844A SE8704844A SE8704844L SE 8704844 L SE8704844 L SE 8704844L SE 8704844 A SE8704844 A SE 8704844A SE 8704844 A SE8704844 A SE 8704844A SE 8704844 L SE8704844 L SE 8704844L
Authority
SE
Sweden
Prior art keywords
loudspeaker
surroundings
apertures
acoustically coupled
cabinet
Prior art date
Application number
SE8704844A
Other languages
Swedish (sv)
Other versions
SE8704844D0 (en
Inventor
Thomas Aastroem
Original Assignee
Astroem Thomas
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 Astroem Thomas filed Critical Astroem Thomas
Priority to SE8704844A priority Critical patent/SE8704844L/en
Publication of SE8704844D0 publication Critical patent/SE8704844D0/en
Priority to EP88907419A priority patent/EP0375714B1/en
Priority to DE8888907419T priority patent/DE3879952D1/en
Priority to AU22643/88A priority patent/AU2264388A/en
Priority to US07/465,110 priority patent/US5056616A/en
Priority to PCT/SE1988/000428 priority patent/WO1989001728A1/en
Publication of SE8704844L publication Critical patent/SE8704844L/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
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2803—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means for loudspeaker transducers
    • 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 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2873—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself for loudspeaker transducers

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

The loudspeaker includes a cabinet with at least one loudspeaker element (2) provided with a loudspeaker membrane (4), and with a sound passage arrangement (20), that in connection with a wall of the cabinet defines a cavity, which via apertures is acoustically coupled to the membrane and to the surroundings of the cabinet. One opening (6) of the apertures communicates with the other apertures via sound passages, the sectional area of which varies from the first-mentioned opening to the other aperturs, at least two of the sound passages having mutually different length. Preferably the sectional area increases from the first-mentioned opening towards the other apertures, where it is finally decreased again.
SE8704844A 1987-08-21 1987-12-03 Loudspeaker with improved bass reproduction - has cavity acoustically coupled with speaker membrane and surroundings of cabinet via apertures SE8704844L (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE8704844A SE8704844L (en) 1987-08-21 1987-12-03 Loudspeaker with improved bass reproduction - has cavity acoustically coupled with speaker membrane and surroundings of cabinet via apertures
EP88907419A EP0375714B1 (en) 1987-08-21 1988-08-22 Loudspeaker
DE8888907419T DE3879952D1 (en) 1987-08-21 1988-08-22 SPEAKER.
AU22643/88A AU2264388A (en) 1987-08-21 1988-08-22 Loudspeaker
US07/465,110 US5056616A (en) 1987-08-21 1988-08-22 Loudspeaker
PCT/SE1988/000428 WO1989001728A1 (en) 1987-08-21 1988-08-22 Loudspeaker

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8703252A SE458814B (en) 1987-08-21 1987-08-21 Loudspeaker with improved bass reproduction
SE8704844A SE8704844L (en) 1987-08-21 1987-12-03 Loudspeaker with improved bass reproduction - has cavity acoustically coupled with speaker membrane and surroundings of cabinet via apertures

Publications (2)

Publication Number Publication Date
SE8704844D0 SE8704844D0 (en) 1987-12-03
SE8704844L true SE8704844L (en) 1989-02-22

Family

ID=20369350

Family Applications (3)

Application Number Title Priority Date Filing Date
SE8703252A SE458814B (en) 1987-08-21 1987-08-21 Loudspeaker with improved bass reproduction
SE8704844A SE8704844L (en) 1987-08-21 1987-12-03 Loudspeaker with improved bass reproduction - has cavity acoustically coupled with speaker membrane and surroundings of cabinet via apertures
SE8802928A SE8802928D0 (en) 1987-08-21 1988-08-18 wOOFER

Family Applications Before (1)

Application Number Title Priority Date Filing Date
SE8703252A SE458814B (en) 1987-08-21 1987-08-21 Loudspeaker with improved bass reproduction

Family Applications After (1)

Application Number Title Priority Date Filing Date
SE8802928A SE8802928D0 (en) 1987-08-21 1988-08-18 wOOFER

Country Status (1)

Country Link
SE (3) SE458814B (en)

Also Published As

Publication number Publication date
SE458814B (en) 1989-05-08
SE8703252D0 (en) 1987-08-21
SE8802928D0 (en) 1988-08-18
SE8704844D0 (en) 1987-12-03
SE8703252L (en) 1989-02-22

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