EP0847223A1 - Kegelförmiger Lautsprechervorsatz und Lautsprecheranordnung mit so einem Lautsprechervorsatz - Google Patents
Kegelförmiger Lautsprechervorsatz und Lautsprecheranordnung mit so einem Lautsprechervorsatz Download PDFInfo
- Publication number
- EP0847223A1 EP0847223A1 EP97121329A EP97121329A EP0847223A1 EP 0847223 A1 EP0847223 A1 EP 0847223A1 EP 97121329 A EP97121329 A EP 97121329A EP 97121329 A EP97121329 A EP 97121329A EP 0847223 A1 EP0847223 A1 EP 0847223A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- loudspeaker
- attachment
- speaker
- cone
- shaped
- 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- Withdrawn
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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 conical speaker attachment according to claim 1 and a loudspeaker arrangement according to claims 2 and 3.
- Loudspeakers always have a predetermined angular range in which the sound is emitted becomes. This angular range is usually between 60 ° and 155 °. Due this technical specification only optimally sonicates that room within this angular range lies. Outside of this range is with a reduced sound and reduced quality.
- Fig.1a, b This situation is shown in Fig.1a, b, with speakers at regular intervals the cladding of the ceiling are installed, such as in hotel halls, hospital corridors, or coaches is the case. If the music or the acoustic message is emitted with a subdued volume, the acoustic reception is for people that are in areas A directly below the speakers are still proportionate Well. However, those people who are in areas B between the loudspeakers receive the music or other acoustic message only in a weakened form.
- optimal music or speech reception can only be achieved by Selection of a suitable reception position or use of headphones can be achieved can.
- the invention consists of a cone-shaped speaker attachment, which in front of one standard loudspeaker is mounted so that the cone tip is directed towards the loudspeaker is.
- the sound waves are deflected by reflection on the sound-reflecting cone jacket and pass through an opening between the header and the speaker and the Loudspeaker housing on all sides, creating a uniform sound from Clearing is achieved.
- Through openings can also be provided in the loudspeaker attachment be provided to a certain proportion of direct radiation of the sound waves achieve.
- the invention also relates to a loudspeaker arrangement consisting of a speaker and a speaker attachment mounted thereon with the above described properties and a loudspeaker arrangement consisting of one in one Built-in speaker and a speaker attachment connected to the housing with the properties described above.
- the course of the cone of the speaker attachment 3 is preferably such that the sound waves impinging on the surface of the cone shell in an angular range of Can be deflected 90 ° to 135 °. This is due to an exponential profile in cross section of the cone shell as reached in Fig.2.
- FIG. 3 shows an embodiment of a speaker attachment 3 according to the invention in one Perspective view shown diagonally from above.
- On the speaker 2 facing sound reflecting surface are a number in this embodiment attached by stabilizing ribs 4, which from the cone tip to the outer edge run.
- the speaker attachment 3 can also be used with screws 5 and spacers 6 selected length can be attached to the housing wall.
- Figure 4 shows the use of speaker attachments according to the invention in a Tower speaker, which has a tweeter 7 and a woofer 8.
- a decorative cover 9 can be provided, which is more suitable with spacers 10 Length and fastening elements 11, for example double Velcro closures on the housing 1 is attached.
- Loudspeaker attachment and / or the decorative cover instead of mounting with screws and spacers, you can attach the Loudspeaker attachment and / or the decorative cover also use stamped parts which can also enable a fast and secure connection.
- the loudspeaker attachment 3 according to the invention is installed in a panel 12 Speaker 2 attached. A large part of the sound waves is immediately after the reflection on the surface of the speaker attachment on the surface of the panels reflected down.
- Fig. 6a, b it is shown how - in contrast to Fig. 1a, b - the space C below the Ceiling speakers are evenly sounded.
- the sound waves arrive directly below the loudspeakers, unlike in Fig. 1b, in an indirect way to the recipient.
- this embodiment also works a portion of directly emitted sound waves to the recipient to create a stereo effect achieve. For this purpose, through openings are provided in the loudspeaker attachment, as will be described later.
- Fig. 7 shows the sound wave emission from two floorstanding speakers (boxes) below Use of the speaker attachment according to the invention.
- the Boxes set up so that the speakers face upwards so that the speaker attachments located above. Sound waves are horizontal from each box on all sides emitted. Due to the horizontal 360 ° radiation and the reflection on the walls uniform sound distribution in the room. This has been tried in practice by that test subjects in the blindfolded room determine the location of the box should. It was found that this is compared to the conventional use of the Floorstanding speaker according to Fig.1c is considerably more difficult.
- the sound reflecting surface of the speaker attachment can be in different ways be trained. It can be both continuous and interrupted, i.e. with along the Cylinder axis of the attachment provided through openings or channels. A certain proportion of the sound waves can pass through the through openings, so that a direct, direct sound is achieved in accordance with this proportion becomes. Such an embodiment is particularly desirable to achieve the stereo effect, but also if the loudspeaker is at a very high height (e.g. in airport halls) is mounted and a combination of vertical and horizontal directions of the Sound propagation should be achieved.
- these can have a cross-section on the one hand be fixed so that there is always a constant proportion of directly emitted Sound waves is generated.
- the proportion of direct radiation is continuously adjustable. This can be achieved by using the speaker attachment is made of a reflector part and a cover part, which is cylinder symmetrical are and have through openings and against each other about the cylinder axis are rotatable.
- the reflector part faces the loudspeaker and the cover part is arranged on the side of the reflector part facing away from the loudspeaker. If the Through openings are made to coincide with each other, the proportion of direct radiation maximum. By rotating the reflector part and cover part against each other the proportion of direct radiation can then be reduced.
- the through openings can preferably be manufactured by the customer in a simple manner by In the reflector part and cover part, predetermined breaking points are provided for the through openings are.
- the through openings can have the shape of circular segments, i.e. triangular shape, have, for example, the shape of 4 circle segments arranged in a point-symmetrical manner, each segment of the circle covers an angular range between 15 ° and 20 °. These circular segments can e.g. each arranged between 2 stabilization ribs, as shown in Fig.3 be.
- the reflector part is preferably arranged to be stationary, while the cover part can be rotated by 360 °. Thus, by stepless, manual turning of the Cover part and by optionally breaking through the openings in the reflector-like the volume of direct radiation can be individually controlled in the cover part.
- the sound reflecting surface of the speaker attachment can either be smooth also be formed with an uneven surface or with paragraphs.
- the speaker attachment can be manufactured and offered individually. There is also one Loudspeaker arrangement conceivable, in which the attachment either directly with the loudspeaker or the housing is firmly connected and the arrangement manufactured and offered as a unit becomes.
- the loudspeaker attachment according to the invention can be injection molded from thermoplastics, preferably even made from recycled material. Otherwise, the Speaker attachment for all common, commercially available speakers according to the different Diameter can be produced. A change in the technical characteristics on the speaker is not necessary.
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)
Abstract
Description
In Fig.2 sind ein konventioneller Standlautsprecher (Box) mit einem Gehäuse 1, einem darin eingebauten zylindersymmetrischen Lautsprecher 2 und ein in einem bestimmten Abstand davor angeordneter erfindungsgemäßer kegelförmiger Lautsprechervorsatz 3 dargestellt. Die Anordnung ist im Querschnitt entlang einer Ebene dargestellt, die durch die Spitze des Lautsprechervorsatzes 3 verläuft. Der Lautsprechervorsatz 3 ist ebenfalls zylindersymmetrisch und derart angeordnet, daß seine Zylinderachse mit derjenigen des Lautsprechers 2 zusammenfällt, so daß die Spitze des Lautsprecheraufsatzes 3 in die Öffnung des Lautsprecher 2 hineinragt. Die dem Lautsprecher 2 zugewandte Oberfläche des Lautsprecheraufsatzes 3 ist schallreflektierend, so däß die von dem Lautsprecher 2 ausgesandten Schallwellen mindestens einmal an dieser Oberfläche reflektiert werden und dann durch die seitliche Öffnung zwischen dem Lautsprechervorsatz 3 und dem Gehäuse 1 in die Umgebung entweichen. Unter einem bestimmten Winkel von dem Lautsprecher 2 abgestrahlte Schallwellen werden - wie dargestellt - einmal an der Oberfläche des Lautsprechervorsatzes 3 und einmal an der dieser Oberfläche gegenüberliegenden Oberfläche des Gehäuses 1 reflektiert. Vorzugsweise ist der Außendurchmesser des Lautsprechervorsatzes 3 größer als derjenige des Lautsprechers 2 und tvpischerweise, wie dargestellt, in der Größenordnung der Ausdehnung des Gehäuses 1.
Claims (10)
- Kegelförmiger Lautsprechervorsatz (3) mit schallreflektierender Oberfläche des Kegelmantels, welcher derart an einen zylindersymmetrischen Lautsprecher (2) montierbar ist, daß die Zylinderachse des Vorsatzes mit derjenigen des Lautsprechers zusammenfällt und die Spitze des Vorsatzes dem Lautsprecher zugewandt ist.
- Lautsprecheranordnung umfassend einen zylindersymmetrischen Lautsprecher (2) und einen an den Lautsprecher montierten kegelförmigen Lautsprechervorsatz (3), wobei die Zylinderachse des Vorsatzes mit derjenigen des Lautsprechers zusammenfällt und die Spitze des Vorsatzes dem Lautsprecher zugewandt ist und die Oberfläche des Kegelmantels des Vorsatzes schallreflektierend ist.
- Lautsprecheranordnung umfassend einen zylindersymmetrischen Lautsprecher (2), welcher in die Wand eines Gehäuses (1) montiert ist, und einen an das Gehäuse montierten kegelförmigen Lautsprechervorsatz (3), dessen Zylinderachse mit derjenigen des Lautsprechers zusammenfällt und die Spitze des Vorsatzes dem Lautsprechers zugewandt ist und die Oberfläche des Kegelmantels des Vorsatzes schallreflektierend ist.
- Kegelförmiger Lautsprechervorsatz oder Lautsprecheranordnung nach einem der Ansprüche 1 bis 3, wobei der Lautsprechervorsatz schallundurchlässig ist.
- Kegelförmiger Lautsprechervorsatz oder Lautsprecheranordnung nach einem der Ansprüche 1 bis 3, wobei der Lautsprechervorsatz entlang der Zylinderachse durchgehende Öffnungen aufweist.
- Kegelförmiger Lautsprechervorsatz oder Lautsprecheranordnung nach Anspruch 5, wobei der Lautsprechervorsatz aus einem Reflektorteil und einem Deckelteil besteht, die Durchgangsöffnungen aufweisen und gegeneinander um die Zylinderachse verdrehbar sind.
- Kegelförmiger Lautsprechervorsatz oder Lautsprecheranordnung nach einem der vorhergehenden Ansprüche, wobei der Kegelmantel derart geformt ist, daß die von dem Lautsprecher ausgesandten Schallwellen an der Oberfläche des Kegelmantels um einen Winkel in einem Bereich von 90° bis 135° umgelenkt werden.
- Kegelförmiger Lautsprechervorsatz oder Lautsprecheranordnung nach einem der vorhergehenden Ansprüche, wobei der Kegelmantel im Querschnitt einen exponentiellen Verlauf von der Kegelspitze bis zum Außenrand aufweist.
- Kegelförmiger Lautsprechervorsatz oder Lautsprecheranordnung nach einem der vorhergehenden Ansprüche, wobei der Lautsprechervorsatz mittels Abstandshülsen (6) und Schraubverbindungen (5) auf serienmäßige Lautsprecherträger, wie Boxen, Paneele, Wände, Karosserieteile und/oder freitragende Montagehilfsmittel montierbar ist.
- Kegelförmiger Lautsprechervorsatz oder Lautsprecheranordnung nach einem der vorhergehenden Ansprüche, wobei auf dem Kegelmantel von der Spitze ausgehend und bis zum Außenrand verlaufend mehrere, hochkantig stehende Stabilisationsrippen (4) angebracht sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19650522 | 1996-12-05 | ||
DE19650522A DE19650522C2 (de) | 1996-12-05 | 1996-12-05 | Kegelförmiger Lautsprechervorsatz |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0847223A1 true EP0847223A1 (de) | 1998-06-10 |
Family
ID=7813758
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97121329A Withdrawn EP0847223A1 (de) | 1996-12-05 | 1997-12-04 | Kegelförmiger Lautsprechervorsatz und Lautsprecheranordnung mit so einem Lautsprechervorsatz |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0847223A1 (de) |
DE (1) | DE19650522C2 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19732294A1 (de) * | 1997-07-26 | 1999-01-28 | Alsthom Cge Alcatel | Verfahren zur Steuerung der Anrufleitung und Kommunikationsendgerät |
DE29903851U1 (de) | 1999-03-04 | 1999-07-01 | Loos, Helmut, 90607 Rückersdorf | Beschallungsvorrichtung zum gezielten Beschallen von Personen |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3204702A1 (de) * | 1982-02-11 | 1983-08-18 | Herwig 4905 Spenge Rabeneck | Exponentialtrichter fuer lautsprechersysteme |
JPS61264897A (ja) * | 1985-05-20 | 1986-11-22 | Mitsubishi Electric Corp | スピ−カ装置 |
EP0297975A1 (de) * | 1987-06-30 | 1989-01-04 | France Telecom | Vorrichtung zur Tonaufnahme und Tonwiedergabe, insbesondere für Audiokonferenzen |
US5306880A (en) * | 1991-06-25 | 1994-04-26 | Eclipse Research Corporation | Omnidirectional speaker system |
DE29711097U1 (de) * | 1997-06-24 | 1997-10-16 | Brecht, Thomas, 76646 Bruchsal | Omnidirektionaler Reflektor zur Verbesserung des Rundstrahlverhaltens von dynamischen Vollbereichsschallwandlersystemen |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02218295A (ja) * | 1989-02-20 | 1990-08-30 | Canon Inc | オーディオ出力装置 |
JPH02237295A (ja) * | 1989-03-10 | 1990-09-19 | Canon Inc | オーディオ出力装置 |
-
1996
- 1996-12-05 DE DE19650522A patent/DE19650522C2/de not_active Expired - Fee Related
-
1997
- 1997-12-04 EP EP97121329A patent/EP0847223A1/de not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3204702A1 (de) * | 1982-02-11 | 1983-08-18 | Herwig 4905 Spenge Rabeneck | Exponentialtrichter fuer lautsprechersysteme |
JPS61264897A (ja) * | 1985-05-20 | 1986-11-22 | Mitsubishi Electric Corp | スピ−カ装置 |
EP0297975A1 (de) * | 1987-06-30 | 1989-01-04 | France Telecom | Vorrichtung zur Tonaufnahme und Tonwiedergabe, insbesondere für Audiokonferenzen |
US5306880A (en) * | 1991-06-25 | 1994-04-26 | Eclipse Research Corporation | Omnidirectional speaker system |
DE29711097U1 (de) * | 1997-06-24 | 1997-10-16 | Brecht, Thomas, 76646 Bruchsal | Omnidirektionaler Reflektor zur Verbesserung des Rundstrahlverhaltens von dynamischen Vollbereichsschallwandlersystemen |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 011, no. 117 (E - 498) 11 April 1987 (1987-04-11) * |
Also Published As
Publication number | Publication date |
---|---|
DE19650522A1 (de) | 1998-06-18 |
DE19650522C2 (de) | 1998-10-22 |
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