EP0450685A1 - Apparatus for sound reproduction - Google Patents

Apparatus for sound reproduction Download PDF

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Publication number
EP0450685A1
EP0450685A1 EP91200574A EP91200574A EP0450685A1 EP 0450685 A1 EP0450685 A1 EP 0450685A1 EP 91200574 A EP91200574 A EP 91200574A EP 91200574 A EP91200574 A EP 91200574A EP 0450685 A1 EP0450685 A1 EP 0450685A1
Authority
EP
European Patent Office
Prior art keywords
loudspeaker
board
sounding
sound
sound reproduction
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Withdrawn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
EP91200574A
Other languages
German (de)
French (fr)
Inventor
Hendrik Vastenhoud
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 EP0450685A1 publication Critical patent/EP0450685A1/en
Withdrawn legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34Arrangements 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
    • H04R1/345Arrangements 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 for loudspeakers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/403Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers

Definitions

  • the invention relates to an apparatus for sound reproduction, comprising a support with at least one loudspeaker.
  • Such an apparatus is well known in the shape of acoustic boxes, in which in one of the side walls a loudspeaker is arranged.
  • Such an apparatus has the drawbnack of the directed effect of the sound generated by the apparatus.
  • This directed effect influences unfavourably the quality of the produced sound and more in particular the reproduced music.
  • the invention aims to obviate this drawback of the known apparatus.
  • the apparatus according to the invention thereto is characterized, in that the central line of the loudspeaker extends vertically.
  • the loudspeaker-opening is directed upwards.
  • a sounding-board is arranged at a distance from the loudspeaker.
  • This sounding-board preferably extends parallel with the plane through the periphery of the loudspeaker-opening.
  • a second loudspeaker is arranged coaxially with the loudspeaker in the sounding-board.
  • both the loudspeakers may be directed towards one another in a favourable way.
  • the distance between the sounding-board and the loudspeaker may be adjusted.
  • the sound generated by the apparatus may be affected and thus may be adapted to the acoustics of the room in which the apparatus is placed.
  • the support has the shape of an acoustic box which at its upper side is provided with a loudspeaker.
  • the sounding-board may then be arranged in a fairly simple way by means of small columns, and with possibly a second loudspeaker arranged within it and which then extends coaxially with the first loudspeaker.
  • the acoustic box 1 is provided at its upper side with a loudspeaker 2 of which the central axis of the cone 3 extends vertically.
  • a sound board 4 is supported by vertical columns 5 and this sound board is provided with a second loudspeaker 6 which is placed coaxially with the first loudspeaker 2.
  • both the loudspeaker-openings are directed towards one another.

Abstract

Apparatus for sound reproduction comprising an acoustic box which at its upper side is provided with a loudspeaker, the loudspeaker-opening of which is directed upwards, while coaxially above this loudspeaker a second loudspeaker is arranged, the loudspeaker-opening of which is directed downwards.

Description

  • The invention relates to an apparatus for sound reproduction, comprising a support with at least one loudspeaker.
  • Such an apparatus is well known in the shape of acoustic boxes, in which in one of the side walls a loudspeaker is arranged.
  • Such an apparatus has the drawbnack of the directed effect of the sound generated by the apparatus.
  • This directed effect influences unfavourably the quality of the produced sound and more in particular the reproduced music.
  • The invention aims to obviate this drawback of the known apparatus.
  • The apparatus according to the invention thereto is characterized, in that the central line of the loudspeaker extends vertically.
  • By this measure the drawback of the directed effect of the known apparatus is obviated completely, because by the apparatus according to the invention the sound is sent out in all directions.
  • In a favourable embodiment of the apparatus according to the invention the loudspeaker-opening is directed upwards.
  • In a further working out of the apparatus according to the invention a sounding-board is arranged at a distance from the loudspeaker.
  • This sounding-board preferably extends parallel with the plane through the periphery of the loudspeaker-opening.
  • In a further working out of the apparatus according to the invention a second loudspeaker is arranged coaxially with the loudspeaker in the sounding-board.
  • Thereby both the loudspeakers may be directed towards one another in a favourable way.
  • It has appeared that with the apparatus according to the invention a better sound quality may be obtained, especially concerning a reproduction of music, than such being the case with the known apparatuses.
  • In order to be able to adjust the apparatus according to the invention to the acoustics of the room in which the apparatus is arranged and in which the sound has to be generated, the distance between the sounding-board and the loudspeaker may be adjusted.
  • By adjusting this distance the sound generated by the apparatus may be affected and thus may be adapted to the acoustics of the room in which the apparatus is placed.
  • In a favourable embodiment of the aparatus according to the invention the support has the shape of an acoustic box which at its upper side is provided with a loudspeaker.
  • Above this loudspeaker the sounding-board may then be arranged in a fairly simple way by means of small columns, and with possibly a second loudspeaker arranged within it and which then extends coaxially with the first loudspeaker.
  • The invention will now be explained further with reference to the accompanying drawing by way of example.
  • As shown in the drawing the acoustic box 1 is provided at its upper side with a loudspeaker 2 of which the central axis of the cone 3 extends vertically.
    At distance from the loudspeaker 2 a sound board 4 is supported by vertical columns 5 and this sound board is provided with a second loudspeaker 6 which is placed coaxially with the first loudspeaker 2.
  • As shown in the drawing both the loudspeaker-openings are directed towards one another.

Claims (7)

  1. Apparatus for sound reproduction, formed by a support with at least one loudspeaker, characterized in that the central line of the loudspeaker extends vertically.
  2. Apparatus according to claim 1, characterized in that the loudspeaker-opening is directed upwards.
  3. Apparatus according to claim 1 or 2, characterized in that a sounding-board is provided at a distance from the loudspeaker.
  4. Apparatus according to claim 3, characterized in that in the sounding- board a second loudspeaker is arranged coaxially with the loudspeaker.
  5. Apparatus according to claim 4, characterized in that both the loudspeakers are directed towards one another.
  6. Apparatus according to claim 3 or 4, characterized in that the distance between the sounding-board and the loudspeaker is adjustable
  7. Apparatus according to any of the preceding claims, characterized in that the support has the shape of an acoustic box which at its upper side is provided with a loudspeaker.
EP91200574A 1990-03-22 1991-03-18 Apparatus for sound reproduction Withdrawn EP0450685A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9000670A NL9000670A (en) 1990-03-22 1990-03-22 DEVICE FOR SOUND PLAYBACK.
NL9000670 1990-03-22

Publications (1)

Publication Number Publication Date
EP0450685A1 true EP0450685A1 (en) 1991-10-09

Family

ID=19856793

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91200574A Withdrawn EP0450685A1 (en) 1990-03-22 1991-03-18 Apparatus for sound reproduction

Country Status (2)

Country Link
EP (1) EP0450685A1 (en)
NL (1) NL9000670A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3371742A (en) * 1965-10-21 1968-03-05 Desmond H. Norton Speaker enclosure
DE2041906A1 (en) * 1970-08-24 1973-05-30 Karl Otto Poensgen HIFI SPEAKER BOX
GB2184323A (en) * 1985-12-12 1987-06-17 Midlen Trading Corp Loudspeaker system
GB2188811A (en) * 1986-04-01 1987-10-07 Canon Kk Sound output system
FR2632801A1 (en) * 1988-06-14 1989-12-15 Voise Serge Adapter for curvilinear acoustics

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3371742A (en) * 1965-10-21 1968-03-05 Desmond H. Norton Speaker enclosure
DE2041906A1 (en) * 1970-08-24 1973-05-30 Karl Otto Poensgen HIFI SPEAKER BOX
GB2184323A (en) * 1985-12-12 1987-06-17 Midlen Trading Corp Loudspeaker system
GB2188811A (en) * 1986-04-01 1987-10-07 Canon Kk Sound output system
FR2632801A1 (en) * 1988-06-14 1989-12-15 Voise Serge Adapter for curvilinear acoustics

Also Published As

Publication number Publication date
NL9000670A (en) 1991-10-16

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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