EP2141691B1 - Adaptable noise creation device - Google Patents

Adaptable noise creation device Download PDF

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Publication number
EP2141691B1
EP2141691B1 EP08012021A EP08012021A EP2141691B1 EP 2141691 B1 EP2141691 B1 EP 2141691B1 EP 08012021 A EP08012021 A EP 08012021A EP 08012021 A EP08012021 A EP 08012021A EP 2141691 B1 EP2141691 B1 EP 2141691B1
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EP
European Patent Office
Prior art keywords
generating device
control
actuator
noise generating
adaptive noise
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.)
Active
Application number
EP08012021A
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German (de)
French (fr)
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EP2141691A1 (en
Inventor
Udo Borgmann
Hans-Rudolf Germann
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.)
Preform GmbH
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Preform GmbH
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
Priority to DE502008001335T priority Critical patent/DE502008001335D1/en
Priority to PL08012021T priority patent/PL2141691T3/en
Priority to AT08012021T priority patent/ATE481704T1/en
Priority to DK08012021.5T priority patent/DK2141691T3/en
Priority to PT08012021T priority patent/PT2141691E/en
Priority to EP08012021A priority patent/EP2141691B1/en
Priority to DE202008017352U priority patent/DE202008017352U1/en
Priority to SI200830077T priority patent/SI2141691T1/en
Application filed by Preform GmbH filed Critical Preform GmbH
Priority to ES08012021T priority patent/ES2352732T3/en
Priority to CA2729692A priority patent/CA2729692C/en
Priority to PCT/EP2009/004561 priority patent/WO2010000411A1/en
Priority to US13/002,215 priority patent/US8611576B2/en
Publication of EP2141691A1 publication Critical patent/EP2141691A1/en
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Publication of EP2141691B1 publication Critical patent/EP2141691B1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
    • G10K11/1752—Masking
    • G10K11/1754—Speech masking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2440/00—Bending wave transducers covered by H04R, not provided for in its groups
    • H04R2440/05—Aspects relating to the positioning and way or means of mounting of exciters to resonant bending wave panels

Definitions

  • the present invention relates to an acoustic, adaptive noise generating device which is capable of increasing the concentration ability of humans in acoustically difficult environments.
  • Area loudspeakers are long as such, for example from the DE 484 872 known.
  • a voice coil functioning according to the electrodynamic principle is used, which is placed directly on a surface, initially of any size and thickness and made of a selected material, and mechanically fixed there. If the voice coil is electrically excited by a sound generator, then their vibrations are transmitted to the surface acting as a membrane and thus used themselves as a sound radiating surface.
  • an electroacoustic transducer of this type would be a variety given of uses. However, apart from a few exceptions, it has not been widely accepted until now, and this is due to its electro-acoustic properties, in particular its transfer function.
  • an adaptive noise generation device in the form of a planar loudspeaker, which comprises at least one actuator arranged on a support plate that can be excited by vibrations whose emitted noise signals can be adjusted via at least one control device connected to the actuator.
  • an amplifier for amplifying the signals coming from the control / regulating device is arranged between the control / regulating device and the actuator.
  • control / regulating device comprises at least one manually adjustable switch.
  • a noise preset can be switched on the user request, the amplitude is randomly adjustable.
  • control device comprises a computer in whose memory different noise sound characteristics, which are variable via a predetermined program or freely selectable stored.
  • the computer is preceded by a microphone which records the prevailing acoustic signals and forwards them to the computer.
  • a microphone which records the prevailing acoustic signals and forwards them to the computer.
  • the outgoing noise signal is adjustable according to a predetermined algorithm.
  • the noise signals may be provided from a database.
  • This database can also be arranged externally, so that a large number of adaptive noise generation devices can be supplied with the necessary signal by means of a database.
  • the noise signals are transmitted from the database to the control unit.
  • control unit is controllable via radio or via infrared.
  • the control unit is equipped with a transmitter / receiver.
  • the counterpart from which the control signals emanate may be a remote control or else a database or a computer.
  • the carrier plate is connected to an acoustic insulating material.
  • the acoustic insulation material is selected from mineral wool, gypsum foam, melamine resin foam, PU foam, aluminum foam, hemp wool, nonwovens and / or felting materials.
  • the acoustic insulating material is covered with a fabric which can be excited electronically, so that the bespannstoff lights up, via which an illumination of the fabric is made possible.
  • the lighting of the fabric can be varied over the entire color spectrum.
  • the color of the light is controllable via a central processing unit, so that specific colors can be set separately or a continuous change over the entire color spectrum is possible.
  • the carrier plate according to the invention is designed as a wall plate, base plate, furniture plate, room divider, cabinet plate and / or partition.
  • an adaptive optical noise generating device 1 which consists of an excitable by vibration carrier 2 and a two-dimensionally connected to the support 2 acoustic insulation material.
  • the insulating material 9 has certain acoustic properties, such as sound-absorbing properties, which makes the acoustics in rooms, whereby the reverberation time of a room is reduced by sound absorption.
  • an acoustic actuator 3 is integrated in the middle of the carrier 2, which is integrated.
  • the properties of the sound-emitting carrier 2, its shape, the size of its surface, its thickness and above all its mechanical properties, but also the design of the actuator 3 and its local arrangement on the sound-emitting carrier 2 determine the acoustic properties of the flat-panel loudspeaker 1. Since, for example, completely different materials can be used for the sound-emitting carrier 2, a selection of materials already results Difficulty. Because it depends on whether the flat speaker 1, as in the case of wood materials, especially in the higher frequency range or on the other hand, such as glass, and plastics in the low-frequency range has a large attenuation, in the latter case, high frequency components excessive and thus rattles inclines. Because of this problem, area speakers, although the principles have long been known in a variety of per se possible applications not enforced because other electro-acoustic transducers are known whose frequency response is easier to correct.
  • the actuator 3 is in connection with an audio amplifier 5, which receives its audio signals, such as noise signals, from a control or regulating device 4.
  • This control device may have, for example, a storage medium 10, which may be a CD player, for example.
  • the different noise signals can locally be switched over at the oscillating panel 2, for example via suitable switches 4a, the same sound characteristic always being able to be generated taking into account and correcting the acoustic damping properties of the material 9 applied to the panel 2 or the same subjective for all embodiments Sound perception is perceptible.
  • the amplitude of the acoustic signals via the switch 4a is adjustable.
  • control device 4 is connected, for example via a stationary USB port 8 with a computing unit or a database 6, via which a control of the control unit 4 and / or the amplifier 5 can take place.
  • a control of the control unit 4 and / or the amplifier 5 can take place.
  • an injection of acoustic signals, such as noise signals, which may be stored in the arithmetic unit or the database 6, in the control device 4 is possible.
  • the control device 4 is preferably a microcontroller.
  • Fig. 1 presented the possibility to provide the insulation board with a fabric 11. This can possibly be excited to shine by corresponding lighting sources are available.
  • FIG. 2 Another preferred embodiment of the acoustic adaptive noise generating device 1 is shown.
  • the carrier 2 is provided with an acoustic insulating material 9 and equipped with an acoustic actuator 3.
  • a microphone 7 which detects the ambient volume
  • the microphone 7 is in communication with a rating device 4b, which may be, for example, an electronic analysis unit, such as a computer.
  • the computer unit 4b analyzes the frequency spectrum and / or the volume of the ambient acoustics detected by the microphone 7 and converts the detected information into control signals for the control or regulating device 4.
  • the acoustic signals to be output by the actuator are actively controlled in terms of their frequency spectrum and their volume as a function of the ambient acoustics recorded by the microphone. This is done as already in FIG. 1 nor an amplification of the output from the micro-controller 4 signals via an amplifier 5.
  • a further active control of the micro-controller 4 is possible via an external computer 6, for example, preferably with the micro-controller 4 via a radio network 8 ', 8th
  • the acoustic signals to be generated such as noise signals, can be transmitted by radio from the computer center or database 6.
  • the acoustic signals transmitted by the computer unit 6 can be present in a database stored on the computer unit 6.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Signal Processing (AREA)
  • General Health & Medical Sciences (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Exhaust Silencers (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Noise Elimination (AREA)

Abstract

The device (1) has an actuator (3) arranged on a carrier plate (2) that is excited by vibrations. The plate is connected with an acoustic insulating material (9). Noise signals of the actuator are regulated by a control/regulation device (4) that is connected with the actuator. An amplifier (5) is arranged between the device (1) and the actuator. The plate is formed as a wall plate, ceiling plate, floor plate, room divider, furniture plate, cabinet plate and/or partition wall. A memory of a computer of the device (4) stores noise tone-characteristics that are changeable by a preset program. The insulating material is selected from mineral wool, gypsum foam, aluminum foam, polyurethane foam, melamine resin foam, hemp wool, non-woven fabric and/or felt material.

Description

Die vorliegende Erfindung betrifft eine akustische, adaptive Rauscherzeugungsvorrichtung, die dazu geeignet ist, in akustisch schwierigen Umgebungen die Konzentrationsfähigkeit von Menschen zu erhöhen.The present invention relates to an acoustic, adaptive noise generating device which is capable of increasing the concentration ability of humans in acoustically difficult environments.

Flächenlautsprecher sind als solche seit langem, beispielsweise aus der DE 484 872 bekannt. Bei einem Flächenlautsprecher wird eine nach dem elektrodynamischen Prinzip funktionierende Schwingspule eingesetzt, die unmittelbar auf eine Fläche - an sich zunächst beliebiger Größe und Dicke und aus einem gewählten Material bestehend - gesetzt und dort mechanisch fixiert ist. Wird die Schwingspule von einem Schallgeber elektrisch angeregt, so werden ihre Schwingungen auf die als Membran wirkende Fläche übertragen und damit diese selbst als schallabstrahlende Fläche benutzt. Für einen elektroakustischen Wandler dieser Gattung wären an sich eine Vielzahl von Verwendungsmöglichkeiten gegeben. Wenn er sich bis heute, abgesehen von wenigen Ausnahmen, dennoch nicht in größerem Umfang durchgesetzt hat, ist das auf seine elektroakustischen Eigenschaften, insbesondere seine Übertragungsfunktion zurückzuführen.Area loudspeakers are long as such, for example from the DE 484 872 known. In the case of a flat loudspeaker, a voice coil functioning according to the electrodynamic principle is used, which is placed directly on a surface, initially of any size and thickness and made of a selected material, and mechanically fixed there. If the voice coil is electrically excited by a sound generator, then their vibrations are transmitted to the surface acting as a membrane and thus used themselves as a sound radiating surface. For an electroacoustic transducer of this type would be a variety given of uses. However, apart from a few exceptions, it has not been widely accepted until now, and this is due to its electro-acoustic properties, in particular its transfer function.

Funktionsbestimmend ist vor allem die schallabstrahlende Fläche mit ihren mechanischen Eigenschaften. Diese Fläche kann nur dann Töne oder Klänge übertragen, sofern sie mechanisch schwingt. Abgesehen von der Einspannung, d.h. der mechanischen Lagerung und dem Ort der Fixierung der Schwingspule auf ihr, ist eine vorzugsweise zu Biegeschwingungen angeregte plattenförmige Fläche in ihrem Schwingungsverhalten an sich bereits ein relativ komplexes Gebilde. Während man es bei einem handelsüblichen Lautsprecher nach dem elektrodynamischen Prinzip, wenn auch da nur mit Kompromissen, noch weitgehend in der Hand hat, die schallabstrahlende Membran im Hinblick auf ihre akustischen Eigenschaften zu optimieren, ist dies beim Flächenlautsprecher nicht ohne weiteres möglich. Illustriert sei diese Problematik an einem Beispiel: Soll die Glasfläche eines Schaufensters, auf die eine Schwingspule aufgesetzt ist, als Flächenlautsprecher eingesetzt werden, so liegen Material, Form und Abmessungen der schallabstrahlenden Fläche, auch ihre Einspannung im Wesentlichen fest. Der Frequenzgang des Flächenlautsprechers in diesem Beispiel ist damit im Wesentlichen vorbestimmt. Typischerweise bedingen die Eigenresonanzen der zur Schallabstrahlung ausgenutzten Fläche bei diesem Material und den Abmessungen des Schaufensters einen Frequenzgang, der - vereinfacht - durch eine überhöhte Wiedergabe im Bereich tiefer Töne und ferner durch eine Klirrneigung zu beschreiben ist, die auf den Einfluss von noch im Hörbereich liegenden Eigenresonanzen höherer Ordnung zurückzuführen ist. Entsprechende charakteristische Nichtlinearitäten treten auch bei anderen Materialien, wie Holz- oder Kunstwerkstoffen auf.Functionally determining is above all the sound-radiating surface with its mechanical properties. This surface can only transmit tones or sounds if it vibrates mechanically. Apart from the clamping, ie the mechanical bearing and the location of the fixation of the voice coil on her, is preferably excited to bending vibrations plate-shaped surface in their vibration behavior in itself a relatively complex structure. While it is in a commercial loudspeaker according to the electrodynamic principle, even though only with compromise, still largely in the hand, to optimize the sound-emitting membrane in terms of their acoustic properties, this is not readily possible with flat panel speakers. Illustrated is this problem with an example: If the glass surface of a shop window, on which a voice coil is placed, are used as area loudspeakers, the material, shape and dimensions of the sound-radiating surface, including their restraint, are essentially fixed. The frequency response of the area loudspeaker in this example is thus substantially predetermined. Typically, the natural resonances of the area used for the sound radiation in this material and the dimensions of the shop window, a frequency response, which - simplified - is to be described by an excessive reproduction in the range of low tones and further by a Klirrneigung, lying on the influence of even in the auditory sector Attributed to self-resonances of higher order is. Corresponding characteristic nonlinearities also occur in other materials, such as wood or synthetic materials.

Wie z.B. aus US A 3,728,497 , US A 3,636,281 oder US A 3,449,531 bekannt, wurden Anstrengungen unternommen, die bekannten Nachteile des Flächenlautsprechers mittels konstruktiver Maßnahmen zu beheben. Gewisse Verbesserungen konnten auf diese Weise erreicht werden, eine grundsätzliche Lösung, die dem Flächenlautsprecher ein breites Anwendungsspektrum erschlossen hätte, haben die bisher unternommenen Versuche aber noch nicht erbracht.Such as out US Pat. No. 3,728,497 . US Pat. No. 3,636,281 or US Pat. No. 3,449,531 As has been known, efforts have been made to remedy the known disadvantages of the flat panel loudspeaker by means of constructive measures. Certain improvements could be achieved in this way, a fundamental solution, which would have opened up the flat-panel loudspeaker a wide range of applications, have not yet made the attempts made so far.

Weitere Rauscherzeugungsvorrichtungen sind aus US 2008/0144850 A1 , US 5748748 , US 4098370 , EP 0 083 718 A1 , US 5692053 , JP 04113946 , EP 0 335 153 , US 5781640 sowie JP 2005280546 A bekannt.Other noise generating devices are off US 2008/0144850 A1 . US 5748748 . US 4098370 . EP 0 083 718 A1 . US 5692053 . JP 04113946 . EP 0 335 153 . US 5781640 such as JP 2005280546 A known.

Aus der Psychoakustik ist bekannt, dass es bei geistigen Arbeiten einen erhöhten Schwierigkeitsgrad darstellt, wenn die Arbeitsumgebung einen erhöhten Lärmpegel aufweist. Ein weiterer Aspekt ist die Arbeit in einem Raum mit mehreren eng nebeneinander sitzenden Menschen, wenn diese parallel Gespräche führen, wie es zum Beispiel in einem Call-Center auftritt. Hier ist es sehr störend, wenn die Stimmen des Nachbarn klar und deutlich zu verstehen sind. Ein ungewolltes Mithören fremder Gesprächsinhalte lenkt die eigene Konzentrationsfähigkeit bei geistigen Arbeiten stark ab. Wenn diese Stimmen lediglich undeutlich zu verstehen sind, dann steigert das durch die verbesserte geistige Konzentration die Arbeitsqualität.From the psychoacoustics is known that it represents an increased degree of difficulty in intellectual work when the working environment has an increased noise level. Another aspect is the work in a room with several people sitting close together, when they are talking in parallel, as occurs, for example, in a call center. Here it is very disturbing when the neighbors' voices are clearly and clearly understood. Unintentional listening to foreign conversation content distracts one's ability to concentrate in intellectual work. If these voices are only vague to understand, then it improves the quality of work through improved mental concentration.

Es ist daher Aufgabe der vorliegenden Erfindung, ein System bzw. eine Verdeckung bereitzustellen, das eine effektive Dämpfung von störendem Schall, insbesondere bei schwieriger und halliger Akustik, ermöglicht.It is therefore an object of the present invention to provide a system or a cover that allows effective damping of disturbing sound, especially in difficult and reverberant acoustics.

Diese Aufgabe wird mit den Merkmalen des Patentanspruchs 1 gelöst. Dabei stellen die abhängigen Ansprüche vorteilhafte Weiterbildungen dar.This object is achieved with the features of claim 1. Here are the dependent claims advantageous developments.

Erfindungsgemäß wird somit eine adaptive Rauscherzeugungsvorrichtung in Form eines Flächenlautsprechers bereitgestellt, die mindestens einen auf einer durch Schwingungen anregbaren Trägerplatte angeordneten Aktuator umfasst, dessen ausgesendete Rauschsignale über mindestens eine mit dem Aktuator verbundene Steuer-/Regelvorrichtung einstellbar sind.According to the invention, an adaptive noise generation device in the form of a planar loudspeaker is thus provided, which comprises at least one actuator arranged on a support plate that can be excited by vibrations whose emitted noise signals can be adjusted via at least one control device connected to the actuator.

Zwischen der Steuer-/Regelvorrichtung und dem Aktuator ist dabei ein Verstärker zur Verstärkung der von der Steuer-/Regelvorrichtung kommenden Signale angeordnet.In this case, an amplifier for amplifying the signals coming from the control / regulating device is arranged between the control / regulating device and the actuator.

Bezüglich der bevorzugten Ausführungsformen der Steuer-/Regelvorrichtung sind hierbei mehrere alternative Ausführungsformen denkbar. Zum einen ist es bevorzugt, wenn die Steuer-/Regelvorrichtung mindestens einen manuell verstellbaren Schalter umfasst. Somit kann auf Benutzerwunsch ein Rausch-Preset zugeschaltet werden, dessen Amplitude regellos verstellbar ist.With regard to the preferred embodiments of the control / regulating device, several alternative embodiments are conceivable here. On the one hand, it is preferred if the control / regulating device comprises at least one manually adjustable switch. Thus, a noise preset can be switched on the user request, the amplitude is randomly adjustable.

Ebenso ist es jedoch möglich, dass die Steuervorrichtung einen Rechner umfasst, in dessen Speicher unterschiedliche Rauschklang-Charakteristika, die über ein vorgegebenes Programm oder frei wählbar veränderbar sind, gespeichert sind.However, it is also possible that the control device comprises a computer in whose memory different noise sound characteristics, which are variable via a predetermined program or freely selectable stored.

Weiter bevorzugt ist es hierbei, wenn dem Rechner ein Mikrofon vorgeschaltet ist, das die vorherrschenden akustischen Signale aufzeichnet und an den Rechner weitergibt. Im Rechner findet eine Analyse dieser Signale statt, wobei in Abhängigkeit der Umgebungs-lautstärke das ausgehende Rauschsignal nach einem vorgegebenen Algorithmus anpassbar ist.It is further preferred here if the computer is preceded by a microphone which records the prevailing acoustic signals and forwards them to the computer. In the computer, an analysis of these signals takes place, depending on the ambient volume, the outgoing noise signal is adjustable according to a predetermined algorithm.

In einer ebenso bevorzugten Ausführungsform können die Rauschsignale aus einer Datenbank zur Verfügung gestellt werden. Diese Datenbank kann auch extern angeordnet sein, so dass eine Vielzahl von adaptiven Rauscherzeugungsvorrichtungen mittels einer Datenbank mit dem nötigen Signal versorgt werden kann. Die Rauschsignale werden dabei von der Datenbank an die Steuer-/Regeleinheit übermittelt.In an equally preferred embodiment, the noise signals may be provided from a database. This database can also be arranged externally, so that a large number of adaptive noise generation devices can be supplied with the necessary signal by means of a database. The noise signals are transmitted from the database to the control unit.

In einer bevorzugten Ausführungsform ist die Steuer-/Regeleinheit über Funk oder über Infrarot ansteuerbar. Dabei ist die Steuer-/Regeleinheit mit einem Sender/Empfänger ausgestattet. Das Gegenstück, von dem die Steuersignale ausgehen, kann dabei eine Fernbedienung oder auch eine Datenbank oder ein Rechner sein.In a preferred embodiment, the control unit is controllable via radio or via infrared. The control unit is equipped with a transmitter / receiver. The counterpart from which the control signals emanate may be a remote control or else a database or a computer.

Erfindungsgemäß ist die Trägerplatte mit einem akustischen Dämmmaterial verbunden. Somit findet zum einen eine passive Schalldämpfung statt, zum anderen kann dem vorhandenen Schall weiter aktiv durch den Aktuator entgegengewirkt werden. Insbesondere ist das akustische Dämmmaterial dabei ausgewählt aus Mineralwolle, Gipsschaum, Melaminharzschaum, PU-Schaum, Aluminiumschaum, Hanfwolle, Vliesstoffen und/oder Filzstoffen.According to the invention, the carrier plate is connected to an acoustic insulating material. Thus, on the one hand passive passive damping takes place, on the other hand, the existing sound can be further actively counteracted by the actuator. In particular, the acoustic insulation material is selected from mineral wool, gypsum foam, melamine resin foam, PU foam, aluminum foam, hemp wool, nonwovens and / or felting materials.

Weiter bevorzugt ist es, dass das akustische Dämmmaterial mit einem Bespannstoff bezogen ist der elektronisch anregbar ist, so dass ein Leuchten des Bespannstoffs eintritt, über die eine Beleuchtung des Bespannstoffes ermöglicht ist. Das Leuchten des Bespannstoffes kann dabei über das komplette Farbspektrum variiert werden. Insbesondere ist die Farbe des Leuchtens über eine zentrale Recheneinheit steuerbar, so dass gezielte Farben separat einstellbar sind oder aber eine kontinuierliche Veränderung über das komplette Farbspektrum möglich ist.It is further preferred that the acoustic insulating material is covered with a fabric which can be excited electronically, so that the bespannstoff lights up, via which an illumination of the fabric is made possible. The lighting of the fabric can be varied over the entire color spectrum. In particular, the color of the light is controllable via a central processing unit, so that specific colors can be set separately or a continuous change over the entire color spectrum is possible.

Die Trägerplatte nach der Erfindung ist als Wandplatte, Bodenplatte, Möbelplatte, Raumteiler, Schrankplatte und/oder Trennwand ausgebildet.The carrier plate according to the invention is designed as a wall plate, base plate, furniture plate, room divider, cabinet plate and / or partition.

Die vorliegende Erfindung wird anhand der beigefügten Figuren näher erläutert, ohne die Erfindung auf die in den Figuren dargestellten Parameter und speziellen Ausführungsformen zu beschränken.The present invention will be further described with reference to the accompanying drawings, without limiting the invention to the parameters and specific embodiments shown in the figures.

In Figur 1 ist eine adaptive optische Rauscherzeugungsvorrichtung 1 dargestellt, die aus einem durch Schwingung anregbaren Träger 2 sowie einem flächig mit dem Träger 2 verbundenen akustischen Dämmmaterial 9 besteht. Das Dämmmaterial 9 verfügt über bestimmte akustische Eigenschaften, wie beispielsweise schallabsorbierende Eigenschaften, die die Akustik in Räumen gestaltet, wobei durch Schallabsorption die Nachhallzeit eines Raumes herabgesetzt wird. Mittig im Träger 2 ist ein akustischer Aktuator 3 integriert.In FIG. 1 an adaptive optical noise generating device 1 is shown, which consists of an excitable by vibration carrier 2 and a two-dimensionally connected to the support 2 acoustic insulation material. The insulating material 9 has certain acoustic properties, such as sound-absorbing properties, which makes the acoustics in rooms, whereby the reverberation time of a room is reduced by sound absorption. In the middle of the carrier 2, an acoustic actuator 3 is integrated.

Für einen Fachmann der technischen Akustik ist unmittelbar einleuchtend, dass u.a. die Eigenschaften des schallabstrahlenden Trägers 2, dessen Form, die Größe seiner Fläche, seine Dicke und vor allem auch seine mechanischen Eigenschaften, aber auch die Ausgestaltung des Aktuators 3 sowie dessen lokale Anordnung auf dem schallabstrahlenden Träger 2 die akustischen Eigenschaften des Flächenlautsprechers 1 bestimmen. Da z.B. völlig unterschiedliche Materialien für den schallabstrahlenden Träger 2 verwendet werden können, ergibt sich bereits aus der Materialauswahl eine Schwierigkeit. Denn davon hängt es ab, ob der Flächenlautsprecher 1, wie im Falle von Holzwerkstoffen, insbesondere im höheren Frequenzbereich oder andererseits, wie beispielsweise bei Glas, auch Kunststoffen im niederfrequenten Bereich eine große Dämpfung aufweist, im letzteren Fall hohe Frequenzanteile überhöht wiedergibt und damit zum Klirren neigt. Wegen dieser Problematik haben sich Flächenlautsprecher, obwohl die Prinzipien dafür längst bekannt sind, in einer Vielzahl von an sich möglichen Anwendungsfällen bisher nicht durchgesetzt, weil andere elektroaküstische Wandler bekannt sind, deren Frequenzgang einfacher korrigierbar ist.For a person skilled in the technical acoustics is immediately evident that, inter alia, the properties of the sound-emitting carrier 2, its shape, the size of its surface, its thickness and above all its mechanical properties, but also the design of the actuator 3 and its local arrangement on the sound-emitting carrier 2 determine the acoustic properties of the flat-panel loudspeaker 1. Since, for example, completely different materials can be used for the sound-emitting carrier 2, a selection of materials already results Difficulty. Because it depends on whether the flat speaker 1, as in the case of wood materials, especially in the higher frequency range or on the other hand, such as glass, and plastics in the low-frequency range has a large attenuation, in the latter case, high frequency components excessive and thus rattles inclines. Because of this problem, area speakers, although the principles have long been known in a variety of per se possible applications not enforced because other electro-acoustic transducers are known whose frequency response is easier to correct.

Der Aktuator 3 steht dabei in Verbindung mit einem Audioverstärker 5, der seine Audiosignale, wie beispielsweise Rauschsignale, von einer Steuer- oder Regelvorrichtung 4 bezieht. Diese Steuervorrichtung kann beispielsweise über ein Speichermedium 10 verfügen, das beispielsweise ein CD-Player sein kann.The actuator 3 is in connection with an audio amplifier 5, which receives its audio signals, such as noise signals, from a control or regulating device 4. This control device may have, for example, a storage medium 10, which may be a CD player, for example.

Die Besonderheit besteht hierin, dass das System adaptiv ausgeführt ist und je nach Unterschied des auf der auf diese schwingenden Platte 2 aufgebrachte Dämmmaterial 9 verschiedene Rauschsignale ausgibt, die die akustische Dämpfung der Platte berücksichtigt, um in jedem Falle ein gleiches Rauschsignal mit gleichem Charakter ausgeben zu können.The peculiarity here is that the system is adaptive and, depending on the difference of the applied on this vibrating plate 2 damping material 9 outputs different noise signals that takes into account the acoustic attenuation of the plate to output in each case an equal noise signal with the same character can.

Die verschiedenen Rauschsignale können lokal am schwingenden Panel 2 z.B. über geeignete Schalter 4a umschaltbar sein, wobei stets unter Berücksichtigung und Korrektur der akustischen Dämpfungs-Eigenschaften des auf das Panel 2 aufgebrachten Materials 9 die gleiche Klangcharakteristik erzeugt werden kann oder für alle Ausführungsformen das gleiche subjektive Klangempfinden wahrnehmbar ist. Ebenso ist die Amplitude der akustischen Signale über die Schalter 4a einstellbar.The different noise signals can locally be switched over at the oscillating panel 2, for example via suitable switches 4a, the same sound characteristic always being able to be generated taking into account and correcting the acoustic damping properties of the material 9 applied to the panel 2 or the same subjective for all embodiments Sound perception is perceptible. Likewise, the amplitude of the acoustic signals via the switch 4a is adjustable.

Weiter ist die Steuervorrichtung 4 beispielsweise über einen stationären USB-Anschluss 8 mit einer Recheneinheit oder einer Datenbank 6 verbunden, über die eine Steuerung der Steuereinheit 4 und/oder des Verstärkers 5 erfolgen kann. Ebenso ist eine Einspeisung von akustischen Signalen, wie beispielsweise Rauschsignalen, die in der Recheneinheit oder der Datenbank 6 gespeichert sein können, in die Steuervorrichtung 4 möglich. Die Steuervorrichtung 4 ist dabei bevorzugt ein Mikro-Controller.Further, the control device 4 is connected, for example via a stationary USB port 8 with a computing unit or a database 6, via which a control of the control unit 4 and / or the amplifier 5 can take place. Similarly, an injection of acoustic signals, such as noise signals, which may be stored in the arithmetic unit or the database 6, in the control device 4 is possible. The control device 4 is preferably a microcontroller.

Ebenso ist in Fig. 1 die Möglichkeit dargestellt, die Dämmplatte mit einem Bespannstoff 11 zu versehen. Dieser kann ggf. zum Leuchten angeregt werden, indem entsprechende Beleuchtungsquellen vorhanden sind.Likewise is in Fig. 1 presented the possibility to provide the insulation board with a fabric 11. This can possibly be excited to shine by corresponding lighting sources are available.

In Figur 2 ist eine weitere bevorzugte Ausführungsform der akustischen adaptiven Rauscherzeugungsvorrichtung 1 dargestellt. Ebenso ist hier der Träger 2 mit einem akustischen Dämmmaterial 9 versehen und mit einem akustischen Aktuator 3 ausgestattet. Die Besonderheit der Ausführungsform gemäß Figur 2 ist zum einen darin zu sehen, dass ein Mikrofon 7 vorhanden ist, das die Umgebungs-Lautstärke erfasst, wobei das Mikrofon 7 mit einer Bewertungseinrichtung 4b in Verbindung steht, die beispielsweise eine elektronische Analyseeinheit, wie z.B. ein Computer, sein kann. Die Rechnereinheit 4b analysiert das Frequenzspektrum und/oder die Lautstärke der vom Mikrofon 7 erfassten Umgebungs-Akustik und wandelt die erfassten Informationen in Steuersignale für die Steuer- oder Regelvorrichtung 4 um. Somit können über die Rechnereinheit 4b und die Steuervorrichtung 4 die von dem Aktuator abzugebenden akustischen Signale hinsichtlich ihres Frequenzspektrums sowie ihrer Lautstärke aktiv in Abhängigkeit von der vom Mikrofon aufgezeichneten Umgebungs-Akustik gesteuert werden. Dabei erfolgt ebenso wie bereits in Figur 1 noch eine Verstärkung der vom Mikro-Controller 4 abgegebenen Signale über einen Verstärker 5. Eine weitere aktive Steuerung des Mikro-Controllers 4 ist dabei über einen externen Rechner 6 möglich, der beispielsweise bevorzugt mit dem Mikro-Controller 4 über ein Funknetz 8', 8" kommunizieren kann. Somit können beispielsweise die zu erzeugenden akustischen Signale, wie beispielsweise Rauschsignale, über Funk von der Rechner-Zentrale oder Datenbank 6 übertragen werden. Die von der Rechnereinheit 6 übertragenen akustischen Signale können dabei in einer auf der Rechnereinheit 6 gespeicherten Datenbank vorliegen. Ebenso ist es möglich, dass eine Erfassung oder Speicherung und Analyse der vom Mikrofon 7 und durch die Rechnereinheit 4b ausgewerteten erfassten akustischen Signale von der zentralen Rechnereinheit 6 erfolgen kann. Somit ist eine Protokollierung bzw. Speicherung des aktuellen oder auch eines gemittelten akustischen Profils des jeweiligen zu beschallenden Raumes möglich. Ebenso ist über die externe Rechnereinheit 6 die Möglichkeit gegeben, dass über Funk die lokal eingestellten Klangcharakteristika von zentraler Stelle überschrieben oder verändert werden können, beispielsweise hinsichtlich nicht belegter Arbeitsplätze oder einer Steuerung im Tag/Nacht-Rhythmus.In FIG. 2 Another preferred embodiment of the acoustic adaptive noise generating device 1 is shown. Likewise, here the carrier 2 is provided with an acoustic insulating material 9 and equipped with an acoustic actuator 3. The peculiarity of the embodiment according to FIG. 2 is firstly to be seen in that there is a microphone 7, which detects the ambient volume, wherein the microphone 7 is in communication with a rating device 4b, which may be, for example, an electronic analysis unit, such as a computer. The computer unit 4b analyzes the frequency spectrum and / or the volume of the ambient acoustics detected by the microphone 7 and converts the detected information into control signals for the control or regulating device 4. Thus, via the computer unit 4b and the control device 4, the acoustic signals to be output by the actuator are actively controlled in terms of their frequency spectrum and their volume as a function of the ambient acoustics recorded by the microphone. This is done as already in FIG. 1 nor an amplification of the output from the micro-controller 4 signals via an amplifier 5. A further active control of the micro-controller 4 is possible via an external computer 6, for example, preferably with the micro-controller 4 via a radio network 8 ', 8th Thus, for example, the acoustic signals to be generated, such as noise signals, can be transmitted by radio from the computer center or database 6. The acoustic signals transmitted by the computer unit 6 can be present in a database stored on the computer unit 6. It is likewise possible for acquisition or storage and analysis of the detected acoustic signals evaluated by the microphone 7 and by the computer unit 4b to be performed by the central computer unit 6. Thus, a logging or storage of the current or even an averaged acoustic profile of the respective one possible to room to be sounded Likewise, via the external computer unit 6 there is the possibility that over the radio the locally adjusted sound characteristics can be overwritten or changed from a central point, for example with regard to unoccupied workstations or a control in the day / night rhythm.

Claims (11)

  1. Adaptive noise generating device in the form of a flat-panel loudspeaker (1) comprising:
    - a carrier panel (2) excitable by vibrations and having a first side and a second side opposite the first side,
    - at least one actuator (3) arranged on the first side,
    - acoustic insulating material arranged on the second side and connected in a planar manner to the carrier panel (2),
    - at least one control/regulating device (4) connected to the actuator (3),
    - at least one amplifier (5) arranged between the control/regulating device (4) and the actuator (3),
    the noise signals of the actuator (3) which are to be emitted being adjustable via the control/regulating device (4), and the carrier panel (2) being a wall panel, ceiling panel, floor panel, furniture panel, room divider, cabinet panel and/or partition wall.
  2. Adaptive noise generating device (1) according to Claim 1, characterised in that the control/regulating device (4) is formed by a microcontroller.
  3. Adaptive noise generating device (1) according to Claim 1, characterised in that the control device (4) comprises at least one manually adjustable switch (4a) (noise preset).
  4. Adaptive noise generating device (1) according to Claim 1, characterised in that the control device (4) comprises a computer (4b), in the memory of which are stored different noise sound characteristics which can be altered via a preset program or freely selectably.
  5. Adaptive noise generating device (1) according to Claim 1, characterised in that the regulating device (4) comprises a computer (4b) and a microphone (7), and the noise emitted is adaptable according to a preset algorithm, depending on the ambient loudness.
  6. Adaptive noise generating device (1) according to one of Claims 1 to 5, characterised in that the noise signals are provided by a data base (6).
  7. Adaptive noise generating device (1) according to at least one of the preceding claims, characterised in that the control/regulating unit (4) is controllable via radio (8', 8").
  8. Adaptive noise generating device (1) according to the preceding claim, characterised in that the control/regulating unit (4) is united with a computer unit (4b) and/or a data base (6) by an antenna (8') for transmitting and/or receiving noise signals and an antenna (8") for transmitting and/or receiving noise signals, in each case to form functional units, each of these groups being controllable via the computer unit (4b) and/or the data base (6).
  9. Adaptive noise generating device (1) according to at least one of Claims 1 to 8, characterised in that the acoustic insulating material (9) is selected from mineral wool, gypsum foam, melamine resin foam, aluminium foam, polyurethane foam, hemp wool, nonwoven fabrics and/or felt materials.
  10. Adaptive noise generating device (1) according to at least one of Claims 1 to 9, characterised in that the acoustic insulating material (9) is provided with a covering material (11) and this covering material itself can be excited to illuminate, so that an illumination of the covering material is adjustable.
  11. Adaptive noise generating device (1) according to Claim 10, characterised in that the colour of the illumination is controllable via a central computer unit.
EP08012021A 2008-07-03 2008-07-03 Adaptable noise creation device Active EP2141691B1 (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
PL08012021T PL2141691T3 (en) 2008-07-03 2008-07-03 Adaptable noise creation device
ES08012021T ES2352732T3 (en) 2008-07-03 2008-07-03 ADAPTIVE NOISE GENERATOR DEVICE.
PT08012021T PT2141691E (en) 2008-07-03 2008-07-03 Adaptable noise creation device
EP08012021A EP2141691B1 (en) 2008-07-03 2008-07-03 Adaptable noise creation device
DE202008017352U DE202008017352U1 (en) 2008-07-03 2008-07-03 Adaptive noise generation device
SI200830077T SI2141691T1 (en) 2008-07-03 2008-07-03 Adaptable noise creation device
DE502008001335T DE502008001335D1 (en) 2008-07-03 2008-07-03 Adaptive noise generation device
AT08012021T ATE481704T1 (en) 2008-07-03 2008-07-03 ADAPTIVE NOISE GENERATING DEVICE
DK08012021.5T DK2141691T3 (en) 2008-07-03 2008-07-03 Adaptive noise generating device
CA2729692A CA2729692C (en) 2008-07-03 2009-06-24 Adaptive noise generating device
PCT/EP2009/004561 WO2010000411A1 (en) 2008-07-03 2009-06-24 Adaptive noise generating device
US13/002,215 US8611576B2 (en) 2008-07-03 2009-06-24 Adaptive noise generating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08012021A EP2141691B1 (en) 2008-07-03 2008-07-03 Adaptable noise creation device

Publications (2)

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EP2141691A1 EP2141691A1 (en) 2010-01-06
EP2141691B1 true EP2141691B1 (en) 2010-09-15

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EP08012021A Active EP2141691B1 (en) 2008-07-03 2008-07-03 Adaptable noise creation device

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US (1) US8611576B2 (en)
EP (1) EP2141691B1 (en)
AT (1) ATE481704T1 (en)
CA (1) CA2729692C (en)
DE (2) DE202008017352U1 (en)
DK (1) DK2141691T3 (en)
ES (1) ES2352732T3 (en)
PL (1) PL2141691T3 (en)
PT (1) PT2141691E (en)
SI (1) SI2141691T1 (en)
WO (1) WO2010000411A1 (en)

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AT525365B1 (en) * 2022-05-25 2023-03-15 Cale3D Prime Gmbh Electroacoustic Transducer
EP4344997A1 (en) * 2022-09-29 2024-04-03 Airbus Operations GmbH Mulitfunctional thermal and acoustic insulation system for an aircraft

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ES2352732T3 (en) 2011-02-22
PT2141691E (en) 2010-12-16
PL2141691T3 (en) 2011-03-31
DE502008001335D1 (en) 2010-10-28
CA2729692C (en) 2016-08-09
CA2729692A1 (en) 2010-01-07
US20110211721A1 (en) 2011-09-01
DK2141691T3 (en) 2011-01-03
US8611576B2 (en) 2013-12-17
ATE481704T1 (en) 2010-10-15
EP2141691A1 (en) 2010-01-06
DE202008017352U1 (en) 2009-07-09
WO2010000411A1 (en) 2010-01-07
SI2141691T1 (en) 2010-11-30

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