EP0763310B1 - Lautsprecher, insbesondere in säulenform - Google Patents
Lautsprecher, insbesondere in säulenform Download PDFInfo
- Publication number
- EP0763310B1 EP0763310B1 EP95923208A EP95923208A EP0763310B1 EP 0763310 B1 EP0763310 B1 EP 0763310B1 EP 95923208 A EP95923208 A EP 95923208A EP 95923208 A EP95923208 A EP 95923208A EP 0763310 B1 EP0763310 B1 EP 0763310B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- loudspeaker
- reflector unit
- axis
- central axis
- sound
- 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
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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
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/34—Arrangements 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
- H04R1/345—Arrangements 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
Definitions
- the invention relates to a loudspeaker, in particular in Columnar shape, with at least one electroacoustic transducer, especially in the execution as a three-way system, the one Reflector body is assigned to all-round sound radiation, wherein the reflector body has a cone shape with a circular cone base has and with its cone tip the electro-acoustic Converter, especially a tweeter or midrange, is arranged opposite.
- Such speakers are for example from the DE-GM 87 00 649 and DE-GM 92 05 731 known.
- To this point-shaped sound source of the tweeter cover such diffusion or reflection cones used so that the all-round sound radiation to the real Sound behavior is modeled. Because the Sound radiation all around and not only in Direction of the listener occurs, arise on the walls of the Listening room reflections that are delayed by direct sound add. Through this indirect sound wave distribution creates a largely natural auditory impression.
- the invention is based on the object To create speakers, especially in columnar form, with the with all-round sound radiation a different sound wave distribution with a certain directional characteristic or more preferred Sound emission direction can be achieved.
- the reflector body By designing the reflector body with respect to the loudspeaker center axis asymmetrical conical surface is achieved that the electroacoustic transducer the flatter Cone part sonicated more and because of that a larger reflection surface formed a preferred Direction of sound emission results.
- the reflector body works similar to a wall of a horn or horn speaker, where due to the asymmetrical "horn cone" on the flatter and steeper Cone part of different horn lengths arise, creating a broad frequency spectrum reaches the listener directly and a determinable portion is used for reflection.
- the sound wave distribution i.e. H. a deviation from the completely the same all-round sound radiation results according to the invention in simple way that the cone tip of Reflector body with respect to the loudspeaker center axis by one certain eccentricity is offset.
- This eccentricity leaves depending on the desired non-uniformity of the all-round sound radiation choose any, but has one Eccentricity corresponding to approximately half the radius of the opposite transducer, especially the tweeter, proven to be useful.
- the reflector body in its flatter cone part has an inclination of about 30 °, while the steeper cone part has an inclination of approx. 45 °.
- the reflector body is in a preferred embodiment with respect to the loudspeaker center axis around a parallel one Swivel or swivel axis.
- This allows the stronger ones appearing on the flatter surface of the cone Change sound radiation in the direction so that depending on The directional characteristic of the sound radiation compared to the uniform omnidirectional radiation can.
- the preferred one Direction of sound emission exactly to a preferred listening position, especially in the middle of two stereo speakers, adjust, the two speakers, as usual with the Stereo playback, along with the listening position form an isosceles triangle.
- the preferred listening position e.g. B. an armchair, is about the less flat cone parts provide all-round sound radiation with stepless, continuous transitions reached.
- the sound volume or sonority of the speaker system to the respective listener wishes adjustable and controllable.
- the adjustment of the asymmetrical, conical reflector body can be done manually, but also by means of a motor Remote control.
- the drive motor is preferably inside the reflector body arranged so that there is a special space-saving solution.
- the rotation of the reflection body its positioning, especially the cone tip with respect to the opposite one electroacoustic transducer, is changeable.
- kinematic reversal Relative position between the two assigned to each other Parts, namely the transducer and the reflection body, thereby change that the transducer, especially the tweeter, twisted or is moved. So can the tweeter, for example be included in an eccentric bearing and with respect to the Reflector body are rotated, so that there is also a changed sound emission characteristics results.
- Fig. 1 the upper area of a speaker 1 is in Side view shown in partial section.
- the Loudspeaker 1 is designed in the form of a column, with a column 2 in the upper area an electroacoustic transducer 4, especially a tweeter.
- This converter 4 especially in the version as a dome tweeter, sonicates a conical reflector body 5 on which the Sound waves are emitted all around, as by means of drawn arrows is indicated.
- Pillar 2 and the top one Area 3 are by spacers (or a perforated plate) 2a interconnected so that the sound waves emerge all around can.
- the reflector body 5 has an asymmetrical conical surface on, whereby a flatter cone part 5a and a steeper Cone part 5b are formed.
- the cone tip 5c of the The reflector body 5 is opposite the loudspeaker central axis 6 offset by an eccentricity measure e. This Eccentricity of the cone tip 5c corresponds to approximately half Radius of the electroacoustic transducer 4.
- the flatter one Tapered surface 5a is a central section through the Cone tip 5c through about 30 ° compared to here horizontal, circular cone base 5d inclined.
- the steeper conical surface 5b is about 45 ° to Tapered base surface 5d.
- the reflector body 5 is one Speaker center axis 6 parallel axis of rotation 7 rotatable.
- This axis of rotation 7 can be identical to the loudspeaker central axis 6, as shown in Fig. 2 in plan view is.
- the axis of rotation 7 can also be eccentric Loudspeaker central axis 6 be aligned, as is the case with the Reference numeral 7 'is indicated, this axis of rotation about half the eccentricity measure e of the cone tip 5c compared to the Speaker center axis 6 is aligned offset.
- the rotation or pivoting of the reflector body 5 can manually by means of a in the plane of the cone base 5d arranged adjustment ring 9 (see also FIG. 2).
- a another alternative is the arrangement of a servomotor 8, the preferred, as shown here in dashed lines in Fig. 1, inside the hollow, thin-walled inside Reflector body 5 is arranged.
- a further reflector body 5 ' is provided be a midrange 4 'as another electroacoustic Converter is assigned.
- this reflector body 5 apply Comments regarding the reflector body 5 in a corresponding manner Wise.
- Pedestal area of column 2 is arranged a woofer preferably also the sound all around via a reflector body emits. Such a can also with respect to the woofer asymmetrical reflector body 5 can be provided if necessary.
- FIG. 2 is a top view of the reflector body 5 shown, in particular with the asymmetrical design an eccentric cone tip 5c can be seen.
- an adjusting ring 9 or an adjustment motor 8 may be the preferred one Direction of radiation changed from A to A '(see also FIG. 3) will.
- the reflector body 5 with its cone base 5d is preferably arranged horizontally, So the axis of rotation 7 arranged here in the middle runs vertically. However, there are also inclined or a horizontal arrangement of the Rotation axis 7 possible.
- this relative movement between the reflector body 5 and the electroacoustic transducer 4 also can be achieved in that the tweeter 4 in Fig. 1 um an upright axis of rotation formed by an eccentric disc 11 is pivoted.
- the twist of the Reflector body 5 preferred, since this is a passive Part is without electrical connections. If only one slight rotation, for example 90 °, desired would also be the twisting movement of the electroacoustic Converter 4 about an eccentric axis of the eccentric disk 11 or a displacement movement away from the central axis 6 is conceivable, as indicated by arrow a.
- the rotation of the reflector body 5 also results in the Possibility to turn the reflector body 5 by more than 360 ° and even, the reflector body 5 at low speeds to rotate to have special sound effects constantly changing, preferred directions of sound radiation A to achieve.
- Fig. 3 the usual arrangement of two speakers 1 in an isosceles triangle to a listening position 10, e.g. shown an armchair in top view.
- the one from the flat one Cone part 5a radiates preferred sound in direction A targets each time to the middle listening position 10.
- the Adjustment movement takes place here by coupling the Adjusting motors 8 preferably synchronous, i.e. a reflector body 5 turns clockwise while the other around the same Angle amount is pivoted counterclockwise.
- Beam or PA area also at the transition surfaces between the flat cone part 5a and steep cone part 5b in sound is emitted all around. This creates the desired "soft" sound impression.
- loudspeakers 1 can be provided, for example in a square arrangement to achieve a Quadro effect, with the preferred listening position 10 in the The middle of the square lies and the respective flat cone part 5a each of the four (or more) speakers 1 toward the center is aligned.
- the converter 4 shows a preferred embodiment, wherein as an arrangement of the converter 4 to the reflector 5 compared to the 1 an overhead arrangement is selected.
- the converter 4 is fixed in the column 2 and can use this as a sound box, while the very light Reflector body 5 with its tip facing downwards is arranged.
- the base area 5d thus points upwards and carries an adjustment pin 9 ', which is at the top of a cage-like, hemispherical cover 12 (partially shown cut) is stored.
- This will Reflector body 5 "floating" held above the transducer 4 and can on the adjustment pin 9 'to set the preferred Beam direction A due to the flatter cone part 5a at the same time rotates the central axis 6 forming the axis of rotation 7 will.
- cone shape also a slight of the exact geometric cone shape deviating design of the reflector should be understood, e.g. B. a concave surface line in the manner of a pagoda roof or barrel-shaped convex surface line at the top basically conical, asymmetrical basic shape of the reflector (Diffuser).
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)
Description
- Fig. 1
- eine Seitenansicht mit teilweiser Schnittdarstellung eines Lautsprechers in Säulenform mit einem asymmetrischen Reflektorkörper;
- Fig. 2
- eine Draufsicht auf den asymmetrischen Reflektorkörper mit einer Verstelleinrichtung;
- Fig. 3
- eine Draufsicht auf zwei voneinander beabstandet angeordnete Lautsprecher zur Verdeutlichung der Schallabstrahlung; und
- Fig. 4
- eine bevorzugte Ausführungsform eines Lautsprechers.
Claims (9)
- Lautsprecher, insbesondere in Säulenform, mit mindestens einem elektroakustischen Wandler (4), insbesondere in der Ausführung als Dreiwegesystem, dem ein Reflektorkörper (5) zur Rundum-Schallabstrahlung zugeordnet ist, wobei der Reflektorkörper (5) eine Kegelform mit einer kreisrunden Kegelgrundfläche (5d) aufweist und mit seiner Kegelspitze (5c) dem elektroakustischen Wandler (4) gegenüberliegend angeordnet ist,
dadurch gekennzeichnet, daß
der Reflektorkörper (5) bezüglich der durch die Kegelspitze (5c) führenden und parallel zur LautsprecherMittelachse (6) verlaufenden Achse eine asymmetrische Kegelmantelfläche mit einem flacheren Kegelteil (5a) und einem steileren Kegelteil (5b) aufweist, so daß die Kegelspitze (5c) des Reflektorkörpers (5) gegenüber der Lautsprecher-Mittelachse (6) um ein Exzentrizitätsmaß (e) versetzt ist. - Lautsprecher nach Anspruch 1, dadurch gekennzeichnet, daß das Exzentrizitätsmaß (e) etwa dem halben Radius des elektroakustischen Wandlers (4) entspricht.
- Lautsprecher nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß am Reflektorkörper (5) - in der Mittelschnittebene durch die Kegelspitze (5c) - die Erzeugende der flacheren Kegelmantelfläche (5a) um 30° und die Erzeugende der gegenüberliegenden, steileren Kegelmantelfläche (5b) um 45° zur Kegelgrundfläche (5d) geneigt ist.
- Lautsprecher nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Lautsprecher (1) säulenförmig ausgebildet ist, wobei der Reflektorkörper (5) im oberen Bereich (3) einer Säule (2) angeordnet ist.
- Lautsprecher nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Reflektorkörper (5) bezüglich der Lautsprecher-Mittelachse (6) um eine zur Lautsprecher-Mittelachse (6) parallele Drehachse (7) verdrehbar ist und mit einem Verstellring (9) zum Verdrehen um die Drehachse (7) versehen ist.
- Lautsprecher nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Reflektorkörper (5) bezüglich der Lautsprecher-Mittelachse (6) um eine zur Lautsprecher-Mittelachse (6) parallele Drehachse (7) verdrehbar ist und mit einem Verstellmotor (8) zum Verdrehen um die Drehachse (7) versehen ist.
- Lautsprecher nach Anspruch 6, dadurch gekennzeichnet, daß der Verstellmotor (8) innerhalb des Reflektorkörpers (5) angeordnet ist.
- Lautsprecher nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Reflektorkörper (5) mit seiner Spitze (5c) nach unten weisend an einer schalldurchlässigen, kuppelförmigen Abdeckung (12) über dem Wandler (4) gelagert ist.
- Lautsprecher nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß zwei Reflektorkörper (5, 5') symmetrisch zu deren Kegelgrundfläche (5d) für einen Hochtöner (4) und einen Mitteltöner (4') angeordnet sind.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE9408805U DE9408805U1 (de) | 1994-05-30 | 1994-05-30 | Lautsprecher, insbesondere in Säulenform |
DE9408805U | 1994-05-30 | ||
PCT/EP1995/002035 WO1995033356A1 (de) | 1994-05-30 | 1995-05-29 | Lautsprecher, insbesondere in säulenform |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0763310A1 EP0763310A1 (de) | 1997-03-19 |
EP0763310B1 true EP0763310B1 (de) | 1998-08-05 |
Family
ID=6909245
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95923208A Expired - Lifetime EP0763310B1 (de) | 1994-05-30 | 1995-05-29 | Lautsprecher, insbesondere in säulenform |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0763310B1 (de) |
DE (2) | DE9408805U1 (de) |
WO (1) | WO1995033356A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE9408805U1 (de) * | 1994-05-30 | 1994-09-01 | Baur Albert | Lautsprecher, insbesondere in Säulenform |
RU2186470C2 (ru) * | 1997-10-10 | 2002-07-27 | Самсунг Электроникс Ко., Лтд. | Всенаправленная акустическая система |
US20190052969A1 (en) * | 2017-08-11 | 2019-02-14 | Kang Gu | Adjustable-Angle Asymmetric High Frequency Acoustic Device |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3842205A (en) * | 1972-07-18 | 1974-10-15 | Nippon Musical Instruments Mfg | Tremolo effect producing acoustic filter system |
DE3447857A1 (de) * | 1984-12-31 | 1986-07-10 | Bernhard 6800 Mannheim Mayer | Rotierendes schallumlenksystem in miniaturausfuehrung |
DE8700649U1 (de) * | 1987-01-15 | 1987-05-27 | Steffen, Eckhard, 8501 Schwarzenbruck, De | |
US5144670A (en) * | 1987-12-09 | 1992-09-01 | Canon Kabushiki Kaisha | Sound output system |
JP2771003B2 (ja) * | 1990-01-23 | 1998-07-02 | キヤノン株式会社 | オーディオ・ミラー・スピーカ |
GB9020788D0 (en) * | 1990-09-25 | 1990-11-07 | Ellis Glynn A | Tool and saw blade tipping apparatus |
DE4219689C2 (de) * | 1991-09-24 | 1995-12-21 | Rainer Keplinger | Lautsprechereinheit |
GB2256773A (en) * | 1991-06-12 | 1992-12-16 | Canon Res Ct Europe Ltd | Loudspeaker uinit |
ATE209908T1 (de) * | 1991-06-18 | 2001-12-15 | Oklahoma Med Res Found | RADIKALFÄNGER (ßSPIN TRAPSß) ZUR BEHANDLUNG VON MIT OXIDATION VON LIPIDEN UND PROTEINEN VERBUNDENEN ERKRANKUNGEN |
DE9205731U1 (de) * | 1992-04-29 | 1992-08-20 | Schoor, Bodo, 3404 Adelebsen, De | |
JP3358836B2 (ja) * | 1992-12-25 | 2002-12-24 | 株式会社東芝 | 反射型スピーカシステム |
DE9408805U1 (de) * | 1994-05-30 | 1994-09-01 | Baur Albert | Lautsprecher, insbesondere in Säulenform |
-
1994
- 1994-05-30 DE DE9408805U patent/DE9408805U1/de not_active Expired - Lifetime
-
1995
- 1995-05-29 EP EP95923208A patent/EP0763310B1/de not_active Expired - Lifetime
- 1995-05-29 DE DE59503081T patent/DE59503081D1/de not_active Expired - Fee Related
- 1995-05-29 WO PCT/EP1995/002035 patent/WO1995033356A1/de active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
DE59503081D1 (de) | 1998-09-10 |
EP0763310A1 (de) | 1997-03-19 |
DE9408805U1 (de) | 1994-09-01 |
WO1995033356A1 (de) | 1995-12-07 |
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