EP0165997A1 - Systeme de reproduction de sons - Google Patents

Systeme de reproduction de sons

Info

Publication number
EP0165997A1
EP0165997A1 EP85903173A EP85903173A EP0165997A1 EP 0165997 A1 EP0165997 A1 EP 0165997A1 EP 85903173 A EP85903173 A EP 85903173A EP 85903173 A EP85903173 A EP 85903173A EP 0165997 A1 EP0165997 A1 EP 0165997A1
Authority
EP
European Patent Office
Prior art keywords
frequency range
speakers
cabinet
range speaker
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Withdrawn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
EP85903173A
Other languages
German (de)
English (en)
Inventor
Raymond M. Yee
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 EP0165997A1 publication Critical patent/EP0165997A1/fr
Withdrawn legal-status Critical Current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 
    • H04R1/26—Spatial arrangements of separate transducers responsive to two or more frequency ranges
    • 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 
    • H04R1/227—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  using transducers reproducing the same frequency band

Definitions

  • This invention relates to systems for reproducing recorded sound, particularly musical sound, in a manner to enhance the pleasure of the listener.
  • the Arany patent represents that the low frequency range speaker disposition there employed has the effect of accentuating the low frequency radiation and because the sound emanates from the rear, or convex side, of these speakers, instead of the more conventional direction fro ⁇ r the concave side of the speakers the sound is sent out evenly in all directions without the directional re ⁇ mission of a typical commercial installation. So far as is known, this sound reproduction system has achieved no measureable listener recognition nor any commercial success.
  • U.S. Patent No. 4,006,311 granted February 1, 1977 to S. Carlsson for "Stereophonic Sound Reproducing Apparatus” discloses another sound reproducing system in which the low, mid and high frequency range speakers are oriented in different directions in an attempt to achieve an omni ⁇ directional reproduction of sound.
  • the basic principle underlying this system is the recognition that there should be a certain ratio between the quantity of sound passing directly to the listener and the quantity of sound re ⁇ flecting off the walls of the listening room.
  • the speakers are oriented in such a manner as to direct sound therefrom at specific angles to adjoining walls of the room.
  • the principal object of the present invention is to reproduce recorded sound in such a manner that the sound seems to emanate from around the system structure rather than directly from the structure or a plane containing the structure.
  • the effect achieved by the invention is that the listener perceives the sound to be appearing as an aur surrounding the reproducing system much as he might percei the sound emanating from a live performance, thereby en ⁇ hancing his pleasure of listening to the reproduction of t recorded sound.
  • this invention contemplates using two conventional low frequency range, or woofer, speakers dis ⁇ posed within a single cabinet, or enclosure, in such a manner that the speakers are directed outwardly from opposite faces of the cabinet.
  • These low frequency range speakers are connected electrically to operate in a push- pull fashion.
  • the electrical signals re ⁇ ceived by the respective low range speakers are 180° out of phase with each other so that the moveable elements of each of the two speakers, although they are facing in opposite directions, are simultaneously urged to move in
  • the high frequency range, or tweeter, speakers be directed away from the listener and preferably generally in a direction at riqht angles to the direction of the low frequency range speaker facing the listener. Sound issuing from a high fre ⁇ quency range speaker is highly directional and if directed toward the listener is immediately perceived to be ema ⁇ nating from a particular spot, i.e., the high frequency speaker. This effect is entirely altered by directing the sound from the high frequency range speakers outwardly through the aura or vortex of the low frequency sound surrounding the cabinet.
  • a plurality of high frequency range speakers be used and that these be ' stacked in an array above the low frequency range cabinet in such a manner that each ascending succeeding speaker is displaced rearwardly, i.e., away from the listener, by at least some small amount.
  • This disposition of the high frequency speakers has the effect of further minimizing the customary, highly localized per ⁇ formance characteristics of such speakers.
  • the system embodying this invention also perferably includes at least one mid frequency range speaker to blend in and fill in between the low and high frequency speakers.
  • the positioning of this particular speaker is not as critical as is the positioning of the low and high fre ⁇ quency range speakers but it is preferably located outside and above the cabinet or enclosure for the low frequency range speakers.
  • Fig. 1 is a three-quarter perspective view from above of a sound reproduction system embodying the invention
  • Fig. 2 is a side elevational view of the system of Fig. 1 with portions broken away to show the interior of the cabinet containing the low frequency range speakers and with the high frequency range array foreshortened;
  • Fig. 3 is a plan view from above of the sound repro ⁇
  • Fig. 4 is a fragmentary perspective view illustrating the mounting details for one of the high frequency range speakers of the system.
  • Fig. 5 is a schematic illustration of the electrical circuitry for the sound reproduction system. Best Mode for Carrying Out the Invention
  • Figs. 1, 2 and 3 collectively illustrate the mechani ⁇ cal arrangement of components in a sound reproduction syste embodying this invention.
  • the principal components are a pair of low frequency range, or woofer, speakers 11 and 12, a mid frequency range speaker 13 and a plurality of high frequency range, or tweeter, speakers 14.
  • All of the aforementioned speakers are of conventional construction and of the types commonly used in home sound reproducing systems.
  • the low frequency range speakers 11 and 12 preferably have a diameter of from approximately 15 inches to approximately 20 inches and are capable- of high compliance sound output down to 40 Hz.
  • Speakers 11 and 12 are housed within a cabinet, or enclosure, 16 having opposite front and rear walls 17 and 18 on which front and rear speakers 11 and 12, respectively, are mounted. Walls 17 and 18 have openings therein through which speakers 11 and 12 can project sound outwardly of the cabinet 16.
  • Cabinet 16 is preferably made of plywood and may have its top and side walls dampened by the application of a fiberglass mat 19.
  • Mid frequency range speaker 13 is preferably mounted atop cabinet 16 near one of the front corners thereof. If the sound reproducing system of this invention is to be used in pairs as it would be for stereophonic sound repro ⁇ duction the two systems would preferably have their mid range speakers 13 mounted at opposite front corners and preferably at that corner nearest to the other sound repro ⁇ ducing system.
  • a plurality of high frequency range speakers 14 are employed in accordance with this invention and their number usually will range from two to four speakers. Speakers 14 are preferably carried in stacked array above cabinet 16 by support means comprising a pair of angle bars 21 pivotally connected at their lower ends 22 to a base 23 resting atop cabinet 16. Base 23 may, if desired, be positioned above a spindle 24 projecting upwardly from cabinet 16 " and about which base 23 and the array of high frequency range speakers 14 may be rotated about a vertical axis. If de ⁇ sired, spindle 24 can be eliminated in which case base 23 simply rests atop cabinet 16 and can be moved about on the
  • angle bars 21 The purpose of the pivotal connection at the lower ends 22 of angle bars 21 is to permit the bars to be swung backward or forward on the pivots to vary the dis ⁇ tance between the high frequency range speakers 14 and a listener positioned in front of the sound reproducing sys ⁇ tem.
  • the exact position of angle bars 21 is a matter of personal preference to the individual listener, but it has been determined that positioning ' these bars at approxi ⁇ mately 50° to 60° from the horizontal will give the most desirable results.
  • Each of the high frequency range speakers 14 is preferably secured to the angle bars 21 by means of pivotal connections 26 (see Fig. 4) permitting the angular relationship between the speakers and the bars to be changed when the bars are moved.
  • Sound emanating from high frequency range speakers is highly directional in character and in order to obtain the non-directional, or omni-directional, effect sought of this improved sound re ⁇ production system, the high frequency range speakers 14 must not be pointed directly at the listener. In fact, the most pleasing effects are achieved with the high frequency range speakers 14 pointing in a direction generally at right angles to the directions in which the low frequency range speakers 11 and 12 are pointing.
  • the floor ⁇ mounted system illustrated in Figs. 1 to 3 and described above speakers 14 are preferably disposed to project ' sound upwardly. It should be appreciated, however, that the system can be turned on its side or turned upside down for suspension from the ' ceiling.
  • the invention contemplates a particular electrical arrangement of the components as well.
  • the preferred circuit diagram for the components is illustrated in Fig. 5 wherein the various speaker compo ⁇ nents are identified by the same reference numerals utilized heretofore.
  • This circuit includes a pair of input terminals 27 and 28, designated positive and negative respectively, and adapted to receive electrical signals from a conventional amplifier.
  • Positive'terminal 27 is connected to a lead 29 for delivering electrical impulses to one electrical side of each of the speakers 11, 12, 13 and 14.
  • the negative terminal 28 is connected to a nega ⁇ tive lead 30 connected to an opposite electrical side of each of the speaker components.
  • Positive lead 29 is connected via a choke 31 to a, so-called, positive terminal on forward facing low frequency range speaker 11.
  • Negative lead 30 is connected to a, so-called, negative terminal ⁇ on speaker 11.
  • positive lead 29 is connected via choke 31 and through a variable resistor 32 to a, so-called, negative terminal on rear low frequency range speaker 12.
  • Negative lead 30 is connected to a, so-called, positive terminal on speaker 12.
  • the speakers 11 and 12 receive electrical signals which are essentially 180° out of phase with respect to each other with the result that when the speaker cone of the forward speaker 11 is caused to move forward the speaker cone of rear speaker 12 moves rearwardly with respect to the speaker itself, but also forwardly of the cabinet.
  • the moveable elements of two speakers 11 and 12 are thus operated in a, so-called, push-pull fashion.
  • the effect of speakers 11 and 12 opera ⁇ ting in this fashion is the generation. of a sound field radiating as an aura around the exterior of cabinet 16. A listener perceives the sound as coming not from. speakers 11 and 12 but from the space surrounding the cabinet 16.
  • the relative electrical drive to speakers 11 and 12 can be adjusted to the listener's preference by means of variable resistor 32 which adjusts the strength of elec ⁇ trical signals reaching rear speaker 12.
  • Choke 31 is one part of what is normally termed a "cross over network" which filters the electrical signals sent to the sound reproduction system from the amplifier so that the low, mid and high frequency range speakers, respectively, receive just the signals of frequencies which they are capable of converting to audible sound without distortion.
  • Mid range speaker 13 is also connected to leads 29 and 30 with lead 29 being connected through a variable resistor 33 to control the volume of speaker 13 and other components of the crossover network consisting of a choke 34 and a condenser 35.
  • Positive lead 29 is preferably con ⁇ nected to the, so-called, negative connection on speaker 13, which means that the negative lead 30 is connected to the so-called positive connection.
  • That portion of the crossover network controlling the feed of electrical signals to the high frequency range speakers 14 consists of a plurality of condensers 36 preferably connected to the speakers 14 in the manner shown in Fig. 5.
  • the arrangement there shown includes one con ⁇ denser 36 connected between the, so-called, positive con ⁇ nection on each speaker 14 and positive lead 29.
  • Another pair of condensers 36 are connected between negative lead 30 and the, so-called, negative connections on two pairs of speakers 14,
  • variable resistor 33 permits the user to balance the volume coming from the low frequency range speakers 11 and 12 and the mid frequency range speaker 13 so that there is a blending of the sound from these speakers with the sound coming from the remainder of the system.
  • Adjustment of the angular position of support bars 21 permits the user to vary the distance between himself and the several high frequency range speakers 14 and moving the entire high frequency range speaker array on cabinet 16 enables the user to change the characteristics of the high frequency range of the sound generated by the system.

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)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Stereophonic System (AREA)

Abstract

Un système de reproduction de sons, en particulier des sons musicaux, donne davantage de plaisir à la personne qui les écoute. Le système utilise une paire de haut-parleurs dans la gamme des basses fréquences (11, 12), une pluralité de haut-parleurs dans la gamme des hautes fréquences (14) et peut utiliser un ou plusieurs haut-parleurs dans la gamme des fréquences moyennes (13), tous ces haut-parleurs étant de construction conventionnelle. Cependant, ces haut-parleurs sont disposés dans un agencement mécanique nouveau et sont interconnectés électriquement de sorte que les sons émanent essentiellement de manière non directionnelle. La personne qui les écoute perçoit les sons comme émanant de l'espace dimensionnel entourant le système plutôt que d'un point ou plan unique, et les apprécie comme si il ou elle se trouvait dans la même pièce que les musiciens et non comme si il ou elle écoutait un enregistrement. On peut attribuer ces résultats en partie à la paire de haut-parleurs dans la gamme des basses fréquences (11, 12) disposés dans une enceinte (16) regardant vers l'extérieur par rapport à des faces opposées de l'enceinte (16) et connectés à une source de signaux électriques de sorte que les haut-parleurs fonctionnent suivant un mode "push-pull". L'agencement mécanique du système est complété par les haut-parleurs de hautes fréquences (14) montés sur l'enceinte (16) de manière à regarder vers le haut de l'enceinte (16) et le haut-parleur de fréquences moyennes (13) est monté sur l'enceinte (16) face à la personne qui écoute.
EP85903173A 1983-12-02 1984-12-03 Systeme de reproduction de sons Withdrawn EP0165997A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US55753183A 1983-12-02 1983-12-02
US557531 1995-11-14

Publications (1)

Publication Number Publication Date
EP0165997A1 true EP0165997A1 (fr) 1986-01-02

Family

ID=24225801

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85903173A Withdrawn EP0165997A1 (fr) 1983-12-02 1984-12-03 Systeme de reproduction de sons

Country Status (7)

Country Link
EP (1) EP0165997A1 (fr)
JP (1) JPS61500644A (fr)
AU (1) AU3745585A (fr)
DK (1) DK349285A (fr)
FI (1) FI852991L (fr)
NO (1) NO853028L (fr)
WO (1) WO1985002513A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH667174A5 (fr) * 1986-06-05 1988-09-15 Sound Electronic Systems Enceinte stereophonique monolithique.
DE69012911T2 (de) * 1989-07-24 1995-01-26 Matsushita Electric Ind Co Ltd Lautsprechersystem.
CA2066121A1 (fr) * 1991-05-29 1992-11-30 Arnold I. Klayman Enceinte acoustique a frequence de resonance basse
NL192947C (nl) * 1992-01-24 1998-05-07 Bastiaan Hendrik Van Bezouwen Luidsprekerkast.
WO1998007294A1 (fr) * 1996-08-12 1998-02-19 Carver R W Subwoofer haute pression a force contre-electromotrice elevee
KR100260128B1 (ko) * 1997-07-29 2000-07-01 구자홍 음향기기의음장이퀄라이저장치
JP4800169B2 (ja) * 2006-10-04 2011-10-26 鹿島建設株式会社 スピーカの防振装置およびスピーカ設置ホール

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1932343A (en) * 1932-05-04 1933-10-24 Philadelphia Storage Battery Radio loud speaker cabinet
US2831060A (en) * 1954-10-18 1958-04-15 Philips Corp Method of reproducing speech and music by means of loudspeakers
US3054856A (en) * 1959-02-24 1962-09-18 Arany Donald Sound reproducing system
US3385929A (en) * 1964-07-23 1968-05-28 Clairtone Sound Corp Ltd Support for a high fidelity stereophonic system
US3393764A (en) * 1966-12-27 1968-07-23 Curtiss R. Schafer Loudspeaker systems
DE2251178C3 (de) * 1970-10-23 1982-10-07 Bürk, Hans, 7911 Unterelchingen Lautsprecheranordnung für eine in einem breiten Frequenzbereich weitgehend ungerichtete Schallabstrahlung
US3824343A (en) * 1972-11-29 1974-07-16 J Dahlquist Multiple driver dynamic loud speaker
SE387512B (sv) * 1973-08-24 1976-09-06 S Carlsson Hogtalare for sterofonisk ljudatergivningsanleggning, samt av tva sadana hogtalare bestaende hogtalarpar
US3931867A (en) * 1975-02-12 1976-01-13 Electrostatic Research Corporation Wide range speaker system
GB1571714A (en) * 1977-04-13 1980-07-16 Kef Electronics Ltd Loudspeakers
DE2725346C3 (de) * 1977-06-04 1981-05-14 Josef Wilhelm 8725 Arnstein Manger Lautsprecher
US4199657A (en) * 1978-07-21 1980-04-22 Harvey Lane Planar sound reproducing speaker system
GB2037130A (en) * 1978-12-19 1980-07-02 Griffin P Single source stereo sound
US4348552A (en) * 1980-06-09 1982-09-07 Siccone Ralph R Direct/reflecting speaker system and triangular shaped enclosure

Also Published As

Publication number Publication date
NO853028L (no) 1985-07-30
AU3745585A (en) 1985-06-13
WO1985002513A1 (fr) 1985-06-06
JPS61500644A (ja) 1986-04-03
DK349285D0 (da) 1985-08-01
DK349285A (da) 1985-08-01
FI852991A0 (fi) 1985-08-02
FI852991L (fi) 1985-08-02

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Legal Events

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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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AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI LU NL SE

17P Request for examination filed

Effective date: 19851205

18D Application deemed to be withdrawn

Effective date: 19871030

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