EP0505344B1 - Dispositif de reproduction du son sans distorsion mecanique intermodulaire - Google Patents

Dispositif de reproduction du son sans distorsion mecanique intermodulaire Download PDF

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Publication number
EP0505344B1
EP0505344B1 EP19920870046 EP92870046A EP0505344B1 EP 0505344 B1 EP0505344 B1 EP 0505344B1 EP 19920870046 EP19920870046 EP 19920870046 EP 92870046 A EP92870046 A EP 92870046A EP 0505344 B1 EP0505344 B1 EP 0505344B1
Authority
EP
European Patent Office
Prior art keywords
tube
mechanical
mass
frequency
intermodulation
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 - Lifetime
Application number
EP19920870046
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0505344A1 (fr
Inventor
Ivan Schellekens
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.)
Individual
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
Application filed by Individual filed Critical Individual
Publication of EP0505344A1 publication Critical patent/EP0505344A1/fr
Application granted granted Critical
Publication of EP0505344B1 publication Critical patent/EP0505344B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2892—Mountings or supports for transducers
    • H04R1/2896—Mountings or supports for transducers 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 
    • H04R1/26—Spatial arrangements of separate transducers responsive to two or more frequency ranges

Definitions

  • the invention in question relates to a decoupling system for reproducing sound without intermodular mechanical distortion due to the mechanical coupling of the chassis of the different speakers by means of a single acoustic enclosure with several speakers.
  • loudspeakers It is well known that the purpose of loudspeakers is to transform electrical signals into acoustic signals, and this, according to defined quality criteria.
  • One of these criteria is to achieve minimum distortion, both with regard to harmonic distortion and with regard to intermodular distortion.
  • intermodular distortion we know that during the reproduction of the sound an annoying influence arises from the fact that the high frequency loudspeakers coexist with the low frequency loudspeakers; this gives rise to intermodular distortion (I.M.D.).
  • I.M.D. intermodular distortion
  • the high frequencies are modulated on the bass.
  • the fixing bolt 8 presses the mass 2 against the mass 3 and the mass 3 against the rear side of the enclosure 5.
  • the aim of the present invention is to avoid the distortion of mechanical intermodulation, caused by the mechanical coupling of the chassis of the different speakers, so that the high frequencies are not modulated on the bass.

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)
EP19920870046 1991-03-19 1992-03-18 Dispositif de reproduction du son sans distorsion mecanique intermodulaire Expired - Lifetime EP0505344B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9100253A BE1004807A3 (nl) 1991-03-19 1991-03-19 Het weergeven van geluid zonder mechanische intermodulatievervorming.
BE9100253 1991-03-19

Publications (2)

Publication Number Publication Date
EP0505344A1 EP0505344A1 (fr) 1992-09-23
EP0505344B1 true EP0505344B1 (fr) 1996-06-05

Family

ID=3885394

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19920870046 Expired - Lifetime EP0505344B1 (fr) 1991-03-19 1992-03-18 Dispositif de reproduction du son sans distorsion mecanique intermodulaire

Country Status (3)

Country Link
EP (1) EP0505344B1 (nl)
BE (1) BE1004807A3 (nl)
DE (1) DE69211196T2 (nl)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI104302B1 (fi) * 1997-11-12 1999-12-15 Genelec Oy Menetelmä ja laitteisto kaiuttimen mekaanisten resonanssien vaimentamiseksi

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS606157B2 (ja) * 1977-07-25 1985-02-15 ソニー株式会社 スピ−カ
EP0111408A1 (en) * 1982-12-02 1984-06-20 Celestion International Limited Loudspeaker cabinets
FR2548854A1 (fr) * 1983-07-07 1985-01-11 Przykorski Karol Enceinte acoustique
DE3414407C2 (de) * 1984-04-17 1986-02-20 Jürgen 6804 Ilvesheim Quaas Anordnung von Schallwandlern in einer Schallführung, insbesondere für Lautsprecherboxen
CH667765A5 (en) * 1985-07-11 1988-10-31 Fredy Egger Improved sound audio loudspeaker system - has separated HF and LF loudspeakers contained in vertically spaced units supported by common stand
FR2625639B1 (fr) * 1987-12-30 1991-11-15 Kobus Stanislas Dispositif de fixation pour haut-parleur electrodynamique
US4924964A (en) * 1989-07-24 1990-05-15 Olsen Michael P Loudspeaker enclosure

Also Published As

Publication number Publication date
DE69211196T2 (de) 1997-04-24
EP0505344A1 (fr) 1992-09-23
DE69211196D1 (de) 1996-07-11
BE1004807A3 (nl) 1993-02-02

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