WO2010031612A1 - Dispositif de génération de sons large bande dans la gamme audible de l'être humain - Google Patents

Dispositif de génération de sons large bande dans la gamme audible de l'être humain Download PDF

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Publication number
WO2010031612A1
WO2010031612A1 PCT/EP2009/059243 EP2009059243W WO2010031612A1 WO 2010031612 A1 WO2010031612 A1 WO 2010031612A1 EP 2009059243 W EP2009059243 W EP 2009059243W WO 2010031612 A1 WO2010031612 A1 WO 2010031612A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
partially
electromechanical transducer
sound
foils
Prior art date
Application number
PCT/EP2009/059243
Other languages
German (de)
English (en)
Inventor
Robert Bösnecker
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2010031612A1 publication Critical patent/WO2010031612A1/fr

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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • 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
    • H04R2440/01—Acoustic transducers using travelling bending waves to generate or detect sound

Definitions

  • the invention relates to a device for reproducing sound.
  • Such a device is used to generate acoustic events such as speech, music, warning sounds and / or frequencies or frequency mixtures that can be perceived, for example, by humans at least partially with the ears.
  • acoustic events such as speech, music, warning sounds and / or frequencies or frequency mixtures that can be perceived, for example, by humans at least partially with the ears.
  • the membrane In order to obtain the radiation behavior desired by Manger, the membrane is designed point-symmetrical, usually it has symmetrically distributed tips or lobes, which should ensure a uniform spectrum.
  • the membrane is often shaped like a symmetrical star.
  • a longitudinal wave generator works like a conventional piston-stroke loudspeaker.
  • a mostly cone-shaped membrane is stimulated by an electrically amplified audio signal to move back and forth on an axis, thus avoiding an acoustic image of the audio signal. at least partially to produce.
  • the sound waves generated by this loudspeaker are aligned in the longitudinal direction to it.
  • a transversal wave generator works like a vibrating surface.
  • a corresponding drive which is usually electrodynamic and / or piezoelectric, a surface is excited to vibrate.
  • This vibrating surface now produces a sound wave image that is completely different from the above-mentioned longitudinal waves.
  • This wave pattern is called the transverse wave, because it develops along the sound surface. This principle has been known for example in musical instrument making for centuries.
  • the invention has for its object to provide a loudspeaker according to the transversal wave principle, which is able to stimulate even the low-frequency part of the human hearing.
  • a film is understood below to mean a material which has a certain flexibility and a defined constant thickness at all points.
  • the film to be used as a membrane surface is clamped and / or clamped at one end or at one edge in a vertical holder. Part of the film is now fixed, the rest of the film is located Free in the room. Now, this holder is tilted by 45 degrees, the inclination is perpendicular to the film surface. Due to its ability to bend, the film will react, which defines whether it is a film. Possible reactions: a.) The test material collapses when it is fixed in the vertical holder. Then it is a soft film, such as cling film.
  • test material When fixing in the vertical holder, the test material is also still vertical, but at 45 degrees inclined holder tilts the test material, however, so that their opposite end of the holder differs by more than 5 degrees from the 45 degrees. Then it is a hard film, such as a plastic sheet. c.) When fixing in the vertical holder, the test material is vertical and the 45 degrees inclined holder, the opposite end of the holder tilts by less than 5 degrees difference. Then it is not a foil but a little or no flexible plate, such as a honeycomb plate or a gypsum fiber board or a metal plate, etc.
  • the original size of the test material is used for the test in which it is used as a membrane film. If, for example, a foil with a size of 80cm x 70cm is stimulated to vibrate, an 80cm x 70cm foil must be used for the test of the foil property by means of the above tests. It may well happen that a very small piece (for example, 10cm x 10cm) of a material X does not give a film in the above sense, but a large, long piece (for example, 10cm x 120cm) of the same material X very well a film in the above sense can be. In the following, a film is understood as meaning a material which is flexible and / or windable and / or rollable, and which at least partially permanently maintains this property.
  • the inventively executed device generates by vibration of a film, a movement of the surrounding air.
  • the vibration inducing vibratory vibration generator is capable of generating vibration frequencies that are at least partially within the human hearing range. This can be high frequencies, but also very low frequencies.
  • the device preferably generates transverse waves. Since special films in this disclosed device are particularly well suited to producing low frequencies, this can eliminate the use of a conventional woofer (subwoofer), which entails a significant cost advantage in providing a broadband system.
  • the films used herein are electrically neutral, i. they carry no tensions and / or currents and are harmless to humans.
  • the device has any geometric shape, which stimulates the surrounding air to vibrate by vibration. Above all, it is able to stimulate the low-frequency part of the human hearing range. This avoids the use of a woofer.
  • the film is folded over a large number of plus and minus poles and has an electrical conductivity. If it flows through a signal current, it moves in the magnetic field of the poles. Differentiation to this disclosure: First, the film is folded.
  • This document discloses a device for using a foil to build an electrostat.
  • a film which reacts to an electric field is brought into an electrostatic field.
  • the foil hovers between two planar poles.
  • the floating voltage in practice is 8000 to 12000 volts and harms the human sustainably, should he come into contact with this voltage.
  • the signal to be transmitted is then added to this high voltage and causes the entire film moves and thus generates an acoustic event.
  • the film is electrically influenced.
  • no transverse waves are generated.
  • the voltages used are very harmful to health.
  • the foil is electrically rechargeable, or second, it is provided with electrical conductivity. Third, no transverse waves are generated.
  • This patent describes a telephone handset in which the sound generation is to take place by means of piezoelectric excitation.
  • the electro-acoustic converter is formed by a carrier foil which contains a sound membrane, wherein the piezoelectric element is fastened on the carrier foil, the carrier foil also contains conductor paths .
  • Delineation to this disclosure It becomes a carrier foil The excitation does not take place at the sound membrane, Second, piezoelectric exciters can not produce low frequencies
  • the teaching of this patent relates to telephone applications and not to woofer reproduction.
  • a speaker diaphragm rather than a foil is used as the sound-emitting element.
  • An embodiment according to the invention is advantageously designed such that at least one film-like surface of constant thickness is at least partially excited to transverse-wave-like vibrations. This is another difference to the so-called Manger transducer, in which the membrane is made thinner in the middle. This also allows the construction of very inexpensive membranes, since the thickness does not have to be varied.
  • An embodiment according to the invention is advantageously designed such that the desired frequencies lie outside the at least one excitation point.
  • the device disclosed here differs in that the high frequencies occur not only inside but above all outside the drive device (the electromechanical converter).
  • the drive elements are designed so that they are punctiform and / or almost point-shaped. Almost point-like means that the wavelengths of the high frequencies are greater than the physical extent of the drive point.
  • the driving point of the For example, drive elements can be as large as a screw head or like a coin.
  • An embodiment according to the invention is advantageously designed such that the surface is at least partially not transparent.
  • An embodiment according to the invention is advantageously designed such that at least one film-like surface is at least partially clearly specular and / or diffusely reflecting.
  • An embodiment of the invention is advantageously designed such that at least one sheet-like surface is at least partially wound up.
  • This film can be at least partially wound up when not in use.
  • This film may also be at least partially unwound for use.
  • This embodiment of the invention now combines the properties of a windable film with the area of sound.
  • An embodiment according to the invention is advantageously designed such that at least one foil-like surface is fixed on at least one fixed frame. In order to ensure sufficient stability during use, so the film can be supported by means of an example frame-like construction.
  • An embodiment of the invention is advantageously designed such that at least one of the vibration exciter works according to the electrodynamic principle, that is, that it at least partially converts electrical signals into a corresponding movement.
  • An embodiment of the invention is advantageously designed such that at least one of the vibration exciter is located exactly in the middle and / or near the middle of the film.
  • An embodiment of the invention is advantageously designed such that at least one of the vibration exciter, which is located exactly in the middle and / or near the middle of the film for the reproduction of the low frequencies is at least partially used.
  • An embodiment according to the invention is advantageously designed such that at least one part of the film is used for image projection and / or for displaying images and / or symbols and / or advertisements and / or warnings and / or mandatory signs and / or prohibition signs and / or information signs becomes.
  • At least one film is flat in the operating state and / or even and / or wrinkle-free and is therefore also suitable as a projection surface.
  • An embodiment according to the invention is advantageously designed such that at least one of the vibration exciter reproduces an acoustic signal which runs synchronously or with a time delay in synchronism with an image reproduction and / or has a content-related relation to the image reproduction.
  • the vibration exciter reproduces an acoustic signal which runs synchronously or with a time delay in synchronism with an image reproduction and / or has a content-related relation to the image reproduction.
  • An embodiment according to the invention is advantageously designed such that at least one film-like surface is at least partially resistant to environmental influences such as dirt, dust, mucus, body fluids of any kind, acids, bases, as well as solid, liquid or gaseous pollutants or any mixtures thereof.
  • An embodiment of the invention is advantageously designed such that at least one sheet-like surface is at least partially washable and / or arbitrarily cleanable.
  • An embodiment of the invention is advantageously designed such that at least one film-like surface is so robust and / or is stabilized by an auxiliary construction so that it at least one weight at least their own weight (gross weight), wear and / or can withstand.
  • An embodiment of the invention is advantageously designed such that at least one film-like surface is at least partially self-luminous and / or light emitting and / or backlit and / or the film is illuminated laterally.
  • An embodiment according to the invention is advantageously designed in such a way that at least one sheet-like surface is at least partially designed to display solid image and / or moving image and / or information.
  • An embodiment of the invention is advantageously designed such that at least one film-like surface is at least partially not plan formed, but for example, is three-dimensionally shaped (concave, convex, etc.).
  • An embodiment of the invention is advantageously designed such that the sound-emitting unit consists of more than one sheet-like surface, and thus volume and / or sound spectrum and / or phase behavior and / or radiation behavior can be determined by appropriate combination.
  • An embodiment of the invention is advantageously designed such that the sound-emitting unit consists of more than one sheet-like surface, which are arranged at a distance from each other and the space consists of a matter other than air.
  • An embodiment of the invention is advantageously designed such that the sound-emitting unit consists of more than one sheet-like surface, which are arranged at a distance from each other and the gap with an acoustically active matter such as oil and / or foam and / or granules.
  • An embodiment according to the invention is advantageously designed in such a way that the sound-radiating unit consists at least partially of a biodegradable and / or environmentally harmless and / or suitable for consumption material and / or a combination of materials, at least one part, for example, at least partially rot and / or is fertile and / or can be recycled.
  • An embodiment according to the invention is advantageously designed such that at least one sensor (electromechanical transducer) which excites the film-like surface for vibration is fastened only to the film.
  • An embodiment according to the invention is advantageously designed such that at least one donor-like surface for vibration-inducing donor is not only attached to the film, but is also otherwise supported by an auxiliary construction.
  • An embodiment according to the invention is advantageously designed such that at least one donor-like surface for vibration-inducing donor differs from at least one other donor in shape and / or geometry and / or weight and / or action principle and / or color and / or attachment. Should a single vibration generator not be able to produce the desired sound spectrum, it is therefore also possible for a plurality of different vibration generators to be arranged on the same film in order to produce the desired spectrum in total.
  • An embodiment according to the invention is advantageously designed in such a way that at least one donor-like surface for vibration-inducing donors is fixed in a punctiform manner and / or is fixed substantially on a continuous attachment surface.
  • An embodiment according to the invention is advantageously designed in such a way that at least one donor-like surface for vibration-inducing donors is at least partially coupled via a non-punctiform fixation, for example an annular or polygonal or segmental coupling, whereby care is taken by suitable damping that within the Ankoppelungsortes a high-pitch playback is at least partially attenuated.
  • FIG. 2 shows a film with vibration exciter and a frame for stabilizing the film.
  • the film 1 shows a suitable film 1, which is wound up into a roll.
  • the film 1 is unwound from the roll, cut to size and prepared for use.
  • FIG 2 shows the other components: This so processed film 1 is glued to stabilize on a frame 2, which consists for example of wood.
  • the film 1 is still flexible, for example, it can be easily pressed by hand, at least one millimeter. If you were to solve the slide 1 again from the frame 2, so you could roll it up again.
  • vibration exciter 4 are now attached. Depending on the application, it may be at least one pathogen 4 or a plurality of pathogens 4.
  • the pathogens 4 can themselves be flexible, but they do not have to.
  • a piece of a suitable material 3 between exciter 4 and slide 1 can be placed.
  • the vibration exciters 4 are now supplied by at least one signal so that they at least partially produce a perceptible by the listener sound spectrum. Different pathogens 4 can generate different partial spectra, so that only in the sum of all pathogens 4, the desired spectrum forms at least partially.
  • the film 1 is now excited by the exciters 4 to vibrate and thus at least partially generates the desired sound.
  • the invention relates to a device for reproducing sound.
  • the invention has for its object to provide a loudspeaker according to the transversal wave principle, which is able to stimulate even the low-frequency part of the human hearing.
  • This object is achieved by a device for reproducing sound by means of at least one film which is at least partially excitable to transversal wave-like vibrations, wherein the transversal wave-like vibrations by means of at least one electromechanical transducer, with the electrical sound signals are converted into mechanical vibrations, at least one excitation point in the film can be coupled.
  • foil is meant a material which is flexible and / or windable and / or rollable, and which at least partially retains this property permanently.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

L'invention concerne un dispositif de reproduction de sons. Le but de l'invention est de proposer un haut-parleur qui fonctionne selon le principe des ondes transversales et soit apte à exciter la partie basses fréquences de la gamme audible de l'être humain. Pour ce faire, un dispositif de reproduction des sons utilise un film qui soit au moins partiellement excitable pour générer des oscillations de type ondes transversales, lesdites oscillations de type ondes transversales pouvant être injectées en au moins un point d'excitation du film par au moins un transducteur électromagnétique apte à convertir des signaux sonores électriques en oscillations mécaniques. Par film, on entend un matériau qui soit flexible et/ou enroulable et/ou bobinable, et qui conserve cette propriété au moins en partie durablement.
PCT/EP2009/059243 2008-09-17 2009-07-17 Dispositif de génération de sons large bande dans la gamme audible de l'être humain WO2010031612A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008047796.6 2008-09-17
DE200810047796 DE102008047796A1 (de) 2008-09-17 2008-09-17 Vorrichtung zur Erzeugung von breitbandigem Schall im Hörbereich des Menschen

Publications (1)

Publication Number Publication Date
WO2010031612A1 true WO2010031612A1 (fr) 2010-03-25

Family

ID=41119837

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/059243 WO2010031612A1 (fr) 2008-09-17 2009-07-17 Dispositif de génération de sons large bande dans la gamme audible de l'être humain

Country Status (2)

Country Link
DE (1) DE102008047796A1 (fr)
WO (1) WO2010031612A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016015702A (ja) * 2014-07-01 2016-01-28 繁和 榎木 スピーカシステム、振動板および振動体
AU2018251100B2 (en) * 2017-04-12 2021-12-02 Aifc-U Unternehmensförderung Loudspeaker with a rollable membrane

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2236374A1 (de) * 1972-07-25 1974-03-07 Manger J W Elektroakustisches wandlersystem
EP0296139A2 (fr) * 1987-06-18 1988-12-21 Highwood Audio Inc. Transducteur audio
WO1997009853A2 (fr) * 1995-09-02 1997-03-13 New Transducers Limited Of Stonehill Ecrans de presentation comprenant des haut-parleurs
WO2007023409A2 (fr) * 2005-08-22 2007-03-01 Philips Intellectual Property & Standards Gmbh Dispositif acoustique d'emission de lumiere

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3345469A (en) 1964-03-02 1967-10-03 Rod Dev Corp Electrostatic loudspeakers
US3636278A (en) 1969-02-19 1972-01-18 Heil Scient Lab Inc Acoustic transducer with a diaphragm forming a plurality of adjacent narrow air spaces open only at one side with the open sides of adjacent air spaces alternatingly facing in opposite directions
AT382490B (de) 1984-12-03 1987-02-25 Akg Akustische Kino Geraete Grossflaechiger elektrostatischer lautsprecher
US5145821A (en) 1990-05-09 1992-09-08 Quantum Chemical Corporation Silica supported polymerization catalyst system
US5218575A (en) 1992-09-04 1993-06-08 Milltronics Ltd. Acoustic transducer
FI115598B (fi) 1998-04-27 2005-05-31 Panphonics Oy Akustinen elementti

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2236374A1 (de) * 1972-07-25 1974-03-07 Manger J W Elektroakustisches wandlersystem
EP0296139A2 (fr) * 1987-06-18 1988-12-21 Highwood Audio Inc. Transducteur audio
WO1997009853A2 (fr) * 1995-09-02 1997-03-13 New Transducers Limited Of Stonehill Ecrans de presentation comprenant des haut-parleurs
WO2007023409A2 (fr) * 2005-08-22 2007-03-01 Philips Intellectual Property & Standards Gmbh Dispositif acoustique d'emission de lumiere

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016015702A (ja) * 2014-07-01 2016-01-28 繁和 榎木 スピーカシステム、振動板および振動体
AU2018251100B2 (en) * 2017-04-12 2021-12-02 Aifc-U Unternehmensförderung Loudspeaker with a rollable membrane
US11323820B2 (en) 2017-04-12 2022-05-03 Aifc-U Unternehmensförderung Loudspeaker with a rollable membrane

Also Published As

Publication number Publication date
DE102008047796A1 (de) 2010-04-15

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