EP0403900A3 - Electroacoustical loudspeaker device - Google Patents

Electroacoustical loudspeaker device Download PDF

Info

Publication number
EP0403900A3
EP0403900A3 EP19900110936 EP90110936A EP0403900A3 EP 0403900 A3 EP0403900 A3 EP 0403900A3 EP 19900110936 EP19900110936 EP 19900110936 EP 90110936 A EP90110936 A EP 90110936A EP 0403900 A3 EP0403900 A3 EP 0403900A3
Authority
EP
European Patent Office
Prior art keywords
loudspeaker
opening
tuning unit
housing
electroacoustical
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.)
Withdrawn
Application number
EP19900110936
Other languages
German (de)
French (fr)
Other versions
EP0403900A2 (en
Inventor
Krister Amnéus
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.)
AMNEUS, KRISTER
Original Assignee
Individual
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 DE19893920060 external-priority patent/DE3920060A1/en
Priority claimed from DE19893920038 external-priority patent/DE3920038A1/en
Application filed by Individual filed Critical Individual
Publication of EP0403900A2 publication Critical patent/EP0403900A2/en
Publication of EP0403900A3 publication Critical patent/EP0403900A3/en
Withdrawn legal-status Critical Current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 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2815—Enclosures comprising vibrating or resonating arrangements of the bass reflex type
    • H04R1/2819—Enclosures comprising vibrating or resonating arrangements of the bass reflex type 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
    • H04R1/2876—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding
    • H04R1/288—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding 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

Es wird eine Lautsprechervorrichtung vorgeschlagen mit wenigstens einen in einer Öffnung eines Gehäuses angebrachten Lautsprecher, mit mindestens einer weiteren Gehäuseöffnung, die eine Größe, insbesondere Fläche und Tiefe hat, daß sie als solche Resonanz mit dem Gehäusevolumen (Vb) bei mindestens der Eigenfrequenz (Fs) des freien Lautsprechers gibt, wobei die Öffnung mit in ihr enthaltenem strömungsbegrenzendem Material eine erste Abstimmeinheit bildet und mit wenigstens einer aus einer weiteren Öffnung und gegebenenfals Pfropfen oder ähnlichem aus akustisch resistivem Material gebildeten weiteren Abstimmeinheit, die auf eine Frequenz abgestimmt ist, die unterschiedlich zu der von der ersten Abstimmeinheit bewirkten Resonanzfrequenz ist und deutlich unter der Eigenfrequenz (fs) des Lautsprechers liegt. A loudspeaker device is proposed with at least one loudspeaker mounted in an opening of a housing, with at least one further housing opening that has a size, in particular area and depth, that it as such resonates with the housing volume (V b ) at at least the natural frequency (F s ) of the free loudspeaker, the opening with the flow-limiting material contained in it forming a first tuning unit and with at least one further tuning unit formed from a further opening and possibly plugs or the like made of acoustically resistive material, which is tuned to a frequency that differs to the resonance frequency caused by the first tuning unit and is clearly below the natural frequency (f s ) of the loudspeaker.

EP19900110936 1989-06-20 1990-06-09 Electroacoustical loudspeaker device Withdrawn EP0403900A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19893920060 DE3920060A1 (en) 1989-06-20 1989-06-20 Loudspeaker housing with acoustically damped resonator opening
DE3920038 1989-06-20
DE3920060 1989-06-20
DE19893920038 DE3920038A1 (en) 1989-06-20 1989-06-20 Loudspeaker housing with acoustically damped resonator opening

Publications (2)

Publication Number Publication Date
EP0403900A2 EP0403900A2 (en) 1990-12-27
EP0403900A3 true EP0403900A3 (en) 1992-03-25

Family

ID=25882113

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900110936 Withdrawn EP0403900A3 (en) 1989-06-20 1990-06-09 Electroacoustical loudspeaker device

Country Status (2)

Country Link
EP (1) EP0403900A3 (en)
DD (1) DD298985A5 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2714788A1 (en) * 1993-12-31 1995-07-07 Sono Light Diffusion White noise emitter esp. for detection and analysis of pulmonary noise
US11606633B2 (en) * 2019-12-10 2023-03-14 Apple Inc. Speaker assembly

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3729061A (en) * 1970-02-27 1973-04-24 Pioneer Electronic Corp Speaker box
GB1406427A (en) * 1971-10-22 1975-09-17 Ferrograph Co Ltd Bass reflex loud-speaker enclosures
FR2365926A1 (en) * 1976-09-27 1978-04-21 Marantz Co Modification of low frequency response of loudspeaker - uses elastically compressible stopper to selectively block tuned orifice
DE3920041C1 (en) * 1989-06-20 1990-12-06 Amneus Engineering, Vaellingby, Se

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3729061A (en) * 1970-02-27 1973-04-24 Pioneer Electronic Corp Speaker box
GB1406427A (en) * 1971-10-22 1975-09-17 Ferrograph Co Ltd Bass reflex loud-speaker enclosures
FR2365926A1 (en) * 1976-09-27 1978-04-21 Marantz Co Modification of low frequency response of loudspeaker - uses elastically compressible stopper to selectively block tuned orifice
DE3920041C1 (en) * 1989-06-20 1990-12-06 Amneus Engineering, Vaellingby, Se

Also Published As

Publication number Publication date
EP0403900A2 (en) 1990-12-27
DD298985A5 (en) 1992-03-19

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