EP0101031A3 - Arrangement for sound sources avoiding acoustic short circuits in loudspeakers - Google Patents

Arrangement for sound sources avoiding acoustic short circuits in loudspeakers Download PDF

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Publication number
EP0101031A3
EP0101031A3 EP83107746A EP83107746A EP0101031A3 EP 0101031 A3 EP0101031 A3 EP 0101031A3 EP 83107746 A EP83107746 A EP 83107746A EP 83107746 A EP83107746 A EP 83107746A EP 0101031 A3 EP0101031 A3 EP 0101031A3
Authority
EP
European Patent Office
Prior art keywords
loudspeakers
speakers
air
arrangement
short circuits
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Withdrawn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
EP83107746A
Other languages
German (de)
French (fr)
Other versions
EP0101031A2 (en
Inventor
Péter Dipl. Albert
Vidor Otoltics
Tamás Albert
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.)
Alkoto Ifjusag Egyesueles
Alkoto Ifjusag Egyesules
Original Assignee
Alkoto Ifjusag Egyesueles
Alkoto Ifjusag Egyesules
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 Alkoto Ifjusag Egyesueles, Alkoto Ifjusag Egyesules filed Critical Alkoto Ifjusag Egyesueles
Publication of EP0101031A2 publication Critical patent/EP0101031A2/en
Publication of EP0101031A3 publication Critical patent/EP0101031A3/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Withdrawn legal-status Critical Current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
    • H04R1/2853—Enclosures comprising vibrating or resonating arrangements using an acoustic labyrinth or a transmission line
    • H04R1/2857—Enclosures comprising vibrating or resonating arrangements using an acoustic labyrinth or a transmission line 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

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)
  • Circuit For Audible Band Transducer (AREA)

Abstract

Vorrichtung für Schallstrahler zur Beseitigung akusti­ scher Kurzchlußerscheinungen bei Lautsprechern. Die Vor­ richtung weist wenigstens drei Lautsprecher (1) auf und jeder der Lautsprecher ist an je eine geschlossene Mantelflä­ che aufweisende starre Wand (2) derart angeschlossen, daß durch die Membran (3) des Lautsprechers (1) das eine Ende der durch die Mantelfläche umgrenzten Luftsäule (4) abge­ schlossen ist, wohingegen das andere Ende der Luftsäulen mit dem äußeren Luftraum in Verbindung steht. Die Längs­ abmessungen der Mantelflächen sind derart gewählt, daß die kürzeste durch die Luft verlaufende Verbindungsstrecke zwischen der Vorderseite und der Hinterseite der jeweiligen Membran (3) nicht kürzer als ein Drittel der Wellenlänge der auszustrahlenden Schallwelle der untersten Frequenz sind, wobei die Länge der Luftsäulen (4) voneinander und von der halben und viertel Wellenlänge der Selbstresonanz der angeschlossenen Lautsprecher verschieden sind und die Eingänge (5, 6) der Lautsprecher (1) einen Generator (7) niedriger Impedanz angeschlossen sind. Device for sound emitters for eliminating acousti short circuit phenomena in loudspeakers. The before direction has at least three speakers (1) and each of the speakers is connected to a closed surface che rigid wall (2) connected such that through the membrane (3) of the speaker (1) one end the air column (4) delimited by the lateral surface is closed, whereas the other end of the air columns is connected to the outer airspace. The longitudinal dimensions of the lateral surfaces are chosen such that the shortest link through the air between the front and the back of each Membrane (3) not shorter than a third of the wavelength of the are the lowest frequency sound wave to be emitted, the length of the air columns (4) from each other and from the half and quarter wavelength of the self resonance of the connected speakers are different and the Inputs (5, 6) of the loudspeakers (1) a generator (7) low impedance are connected.

EP83107746A 1982-08-05 1983-08-05 Arrangement for sound sources avoiding acoustic short circuits in loudspeakers Withdrawn EP0101031A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU251482A HU186101B (en) 1982-08-05 1982-08-05 Sound radiator without effect of acoustic short circuit of the loadspeakers
HU251482 1982-08-05

Publications (2)

Publication Number Publication Date
EP0101031A2 EP0101031A2 (en) 1984-02-22
EP0101031A3 true EP0101031A3 (en) 1986-04-09

Family

ID=10959778

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83107746A Withdrawn EP0101031A3 (en) 1982-08-05 1983-08-05 Arrangement for sound sources avoiding acoustic short circuits in loudspeakers

Country Status (2)

Country Link
EP (1) EP0101031A3 (en)
HU (1) HU186101B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5170435A (en) * 1990-06-28 1992-12-08 Bose Corporation Waveguide electroacoustical transducing
US6278789B1 (en) * 1993-05-06 2001-08-21 Bose Corporation Frequency selective acoustic waveguide damping
DE19601217C1 (en) * 1996-01-15 1997-07-24 Mark Iv Audio Deutschland Gmbh Bass reflex box
JP2010509827A (en) * 2006-11-10 2010-03-25 ピーエスエス・ベルギー・エヌブイ Loudspeaker system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1912454A (en) * 1932-03-03 1933-06-06 William H Hutter Acoustic apparatus
US3993162A (en) * 1975-06-20 1976-11-23 Kenneth Juuti Acoustic speaker system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1912454A (en) * 1932-03-03 1933-06-06 William H Hutter Acoustic apparatus
US3993162A (en) * 1975-06-20 1976-11-23 Kenneth Juuti Acoustic speaker system

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
AUDIO, Band 40, Nr. 9, September 1956, Seiten 34-42 und 82-86, New York, US; E.J. JORDAN: "Baffles unbaffled" *
FUNKSCHAU, Nr. 9, April 1982, Seiten 69-70, M}nchen, DE; H. SCHAPER: "Akustische Laufzeitleitung" *
JOURNAL OF THE AUDIO ENGINEERING SOCIETY, Band 7, Nr. 1, Januar 1959, Seiten 38-46, New York, US; P.W. TAPPAN: "Analysis of a low-frequency loudspeaker system" *

Also Published As

Publication number Publication date
EP0101031A2 (en) 1984-02-22
HU186101B (en) 1985-06-28

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Effective date: 19860303

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Inventor name: ALBERT, TAMAS

Inventor name: ALBERT, PETER, DIPL.

Inventor name: OTOLTICS, VIDOR