EP4282161A1 - Système de haut-parleur - Google Patents

Système de haut-parleur

Info

Publication number
EP4282161A1
EP4282161A1 EP22703298.4A EP22703298A EP4282161A1 EP 4282161 A1 EP4282161 A1 EP 4282161A1 EP 22703298 A EP22703298 A EP 22703298A EP 4282161 A1 EP4282161 A1 EP 4282161A1
Authority
EP
European Patent Office
Prior art keywords
housing
loudspeaker system
membrane
perforations
transducer
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.)
Pending
Application number
EP22703298.4A
Other languages
German (de)
English (en)
Inventor
Klaus Kaetel
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.)
Kaetel Systems GmbH
Original Assignee
Kaetel Systems 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
Application filed by Kaetel Systems GmbH filed Critical Kaetel Systems GmbH
Publication of EP4282161A1 publication Critical patent/EP4282161A1/fr
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • 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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/021—Casings; Cabinets ; Supports therefor; Mountings therein incorporating only one transducer
    • 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
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/023—Screens for loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2876—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2884—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of the enclosure structure, i.e. strengthening or shape of the enclosure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R19/00—Electrostatic transducers
    • H04R19/02—Loudspeakers

Definitions

  • the present invention relates to the field of electroacoustics and in particular to concepts for recording and reproducing acoustic signals.
  • acoustic scenes are recorded using a set of microphones. Each microphone outputs a microphone signal.
  • a microphone signal For example, for an orchestra audio scene, 25 microphones can be used.
  • a sound engineer performs a mixing of the 25 microphone output signals into, for example, a standard format such as a stereo format, a 5.1, a 7.1, a 7.2, or other appropriate format.
  • a stereo format for example, two stereo channels are created by the sound engineer or an automatic mixing process.
  • a 5.1 format the mixing results in five channels and one subwoofer channel.
  • a mix is made into seven channels and two subwoofer channels.
  • a mixed result is applied to electrodynamic loudspeakers.
  • there are two speakers with the first speaker receiving the first stereo channel and the second speaker receiving the second stereo channel.
  • in a 7.2 playback format for example, there are seven loudspeakers in predetermined positions and two subwoofers that can be placed relatively arbitrarily. The seven channels are routed to their respective speakers, and the two subwoofer channels are routed to their respective subwoofers.
  • the European patent EP 2692154 B1 describes a set for capturing and playing back an audio scene, in which not only the translation is recorded and played back, but also the rotation and also the vibration. Therefore, a sound scene is not only represented by a single detection signal or a single mixed signal, given, but by two detection signals or two mixed signals, which on the one hand are recorded simultaneously and on the other hand are reproduced simultaneously. This achieves that different emission characteristics are recorded from the audio scene compared to a standard recording and are reproduced in a playback environment.
  • a set of microphones is placed between the acoustic scene and an (imaginary) auditorium to capture the "conventional" or translational signal, which is characterized by high directivity or high quality excellent.
  • a second set of microphones is placed above or to the side of the acoustic scene to record a low-Q or low-directivity signal intended to represent the rotation of the sound waves as opposed to translation.
  • corresponding loudspeakers are placed in the typical standard positions, each having an omnidirectional array to reproduce the rotational signal and a directional array to reproduce the "conventional" translational sound signal.
  • European patent EP 2692144 B1 discloses a loudspeaker for reproducing, on the one hand, the translational audio signal and, on the other hand, the rotary audio signal.
  • the loudspeaker thus has an omnidirectionally emitting arrangement on the one hand and a directionally emitting arrangement on the other hand.
  • European patent EP 2692151 B1 discloses an electret microphone which can be used to record the omnidirectional or the directional signal.
  • European patent EP 3061262 B1 discloses an earphone and a method for manufacturing an earphone that generates both a translatory sound field and a rotary sound field.
  • European patent application EP 3061266 A1 which is intended to be granted, discloses a headphone and a method for generating a headphone which is designed to convert the “conventional” translational sound signal using a first transducer and to generate the rotary sound field using a second transducer arranged perpendicularly to the first transducer.
  • the recording and playback of the rotational sound field in addition to the translational sound field leads to a significantly improved and thus high-quality audio signal perception, which almost gives the impression of a live concert, although the audio signal is played back through loudspeakers or headphones or earphones.
  • the object of the present invention is to provide an improved concept for reproducing all of this recorded sound.
  • the speaker system includes a transducer configured to convert an electrical signal into sound waves and having a constrained diaphragm configured to be deflected by the electrical signal.
  • the membrane has a deflection area which can be deflected in relation to a resting position of the membrane.
  • the membrane also has a clamping area which can be deflected less or not at all in relation to the deflection area.
  • the transducer is arranged in a housing, the housing having perforations to allow the sound waves to escape into an external environment. According to the proposed loudspeaker system, the perforations are predominantly arranged closer to the clamping area than to the deflection area on the housing. In particular, the perforations are arranged exclusively opposite the clamping area.
  • the housing can preferably be constructed with non-parallel side walls or walls. In this way it can be avoided, for example, that standing waves are caused by the reflection of the sound waves inside the housing. The generation of standing waves can be detrimental to the loudspeaker system, particularly at resonant frequencies of the loudspeaker system.
  • a further aspect of the present invention relates to a method for operating a loudspeaker system.
  • the method includes providing a speaker system as already described herein and applying a signal to the transducer such that an electrical signal is converted to a sound wave and a portion of the sound waves propagate through the perforations to an external environment of the speaker system.
  • the fact that the loudspeaker system described herein is used when operating the loudspeaker system means that predominantly rotational vibrations can leave the loudspeaker system unhindered.
  • the perforations, which allow an unhindered exit from the loudspeaker system are predominantly arranged closer to the clamping area than to the deflection area on the housing.
  • the vibrations of the membrane which arise in the area of the constrained membrane as soon as a signal is applied, can leave the loudspeaker system through the directly opposite perforations.
  • the vibrations which occur in the deflection area ie in the area of the diaphragm which is not prevented from vibrating by the clamping of the diaphragm, are prevented from exiting unhindered through the housing.
  • the housing or a sound-absorbing material attached to the housing can absorb the sound waves that are produced by the deflection area and/or reflect them into an interior space of the loudspeaker system.
  • the method includes providing a transducer that converts an electrical signal into sound waves.
  • the method also includes clamping a membrane so that the membrane is deflected by the converted sound wave, the membrane being deflected in a deflection range in relation to a rest position of the membrane and in a clamping is deflected less or not at all in relation to the deflection range.
  • the membrane in the deflection area can be excited to oscillate undisturbed, while the membrane in the clamping area can be excited to oscillate only to a limited extent.
  • the method further includes providing a housing and arranging perforations on the housing to allow the sound waves to exit to an external environment; wherein the perforations are predominantly located closer to the gripping area than to the deflection area on the housing.
  • the method includes placing the transducer in the housing.
  • the converter can preferably be coupled to a wall of the housing on only one side.
  • the term side face is also used for the term wall and vice versa.
  • the loudspeaker system described herein or the method for operating a loudspeaker system can be used to reproduce the rotary component of the sound field, which, together with reproduction of a conventional loudspeaker, achieves a sound experience that is almost indistinguishable from the original sound scene in which the sound emitted by musical instruments or human voices.
  • the proposed loudspeaker system it is achieved in particular that the sound can be emitted not only in a translatory manner, but also, in particular predominantly, in a rotary manner and possibly also in a vibratory manner.
  • the rotational vibrations in particular can contribute to conveying a live experience to a higher person.
  • FIG. 1 shows a proposed loudspeaker system in a perspective view
  • FIG. 2 shows a plan view of the loudspeaker system according to FIG. 1 ;
  • Figures 3a,b show a plan view of alternative forms of the proposed speaker system
  • Fig. 4a-c is a plan view of the housing of the transducer (Fig. 4a); a plan view of the membrane of the transducer (Fig. 4b); a side view of the converter (Fig. 4c); and
  • FIG. 5 shows a schematic representation of a translational vibration, a rotational vibration and a vibrational vibration on a triatomic molecule
  • FIG. 6 shows a flow chart of a method for operating a loudspeaker system
  • FIG. 7 shows a flowchart for manufacturing a loudspeaker system.
  • FIG. 1 shows a proposed loudspeaker system 10 in a perspective view
  • FIG. 2 shows a plan view of the loudspeaker system 10 according to FIG. 1.
  • the loudspeaker system 10 comprises a converter 20 which is designed to convert an electrical signal into sound waves.
  • the transducer 20 has a clamped membrane 30 which is designed to be deflected by the electrical signal, the membrane 30 having a deflection area 32 which can be deflected in relation to a rest position 34 of the membrane 30, and a clamping area 36. which is less or not deflectable in relation to the deflection area 32 .
  • the membrane 30 is shown in its rest position 34.
  • the rest position is the position that the diaphragm 30 assumes when no signal is applied to the transducer 20. Broadly speaking, when the speaker system is off, the diaphragm 30 is in its rest position 34. When a signal is applied to the transducer 20, the diaphragm 30 is excited to vibrate. Since the membrane 30 is clamped in the converter 20, the membrane 30 has a clamping region 36 in which the vibrations due to the clamping of the membrane 30 can only oscillate to a limited extent.
  • the membrane 30 has a deflection area 32 in which the oscillations can oscillate almost freely.
  • the membrane vibrates in the xy plane, when the membrane is parallel to a yz plane at rest position 34.
  • a corresponding coordinate system is shown in Figs. 1 to 4 marked.
  • the clamping area 36 and the deflection area 32 are also shown in Figs. 2 and 3 indicated by the dashed lines.
  • the transducer 20 is arranged in a housing 40, the housing 40 having perforations 50 to allow the sound wave to escape into an external environment.
  • the perforations 50 are predominantly arranged closer to the clamping area 36 than to the deflection area 32 on the housing 40 .
  • the perforations 50 are exclusively arranged opposite the clamping area 36 .
  • sound waves that are formed in the vicinity of the clamping area 36 can leave the housing 40 immediately, in particular without being reflected on the housing 40 beforehand. It has also been found that the sound waves generated in the clamping area are primarily rotational vibrations 94 .
  • rotational vibrations can preferably be released in addition to translational vibrations 96, since the rotational vibrations can exit directly into an external environment through the perforations 50 on the housing 40 without being unnecessarily reflected beforehand.
  • the principle of the present invention can thus be seen in the fact that the perforations 50 of the housing 40 are arranged where they are the clamping area 36 closest.
  • the housing 40 has side faces 42 that are not parallel to each other. Such side surfaces 42 which are not parallel to one another are shown in FIGS. 1, 2 and 3b. In the case of non-parallel side surfaces, the probability that standing waves will arise when the sound waves are reflected on the side surfaces 42 of the housing 40 can be greatly reduced, in particular eliminated. It is also conceivable that the side surfaces 42 are formed parallel to one another, as is shown in FIG. 3a. In such a case, the probability that standing waves can arise can be greater than in the case of non-parallel side surfaces 42 . However, the formation of standing waves can also be counteracted by at least partially placing sound-absorbing materials on the side surfaces 42 or along the side surfaces 42 .
  • the transducer 20 is a patch transducer disposed between the side faces 42, with a patch transducer being disposed between the patch transducer and a first side face 42 first angle ⁇ is formed and a second angle ⁇ is formed between the surface transducer and a second side surface 42 when a tangent is placed on the side surface 42 and an axis through the transducer 20, as shown in Figs. 2 and 3b is drawn.
  • the first and the second angle ⁇ , ⁇ are acute angles.
  • the side surfaces 42 in a section perpendicular to the side surface 42 ie in a top view as shown in Figs. 2 and 3 shown, have a curved course.
  • two opposite side surfaces 42 have two different curve profiles in a section (not shown). For example, one curve could be parabolic and the other curve could be a higher order polynomial or a straight line. For aesthetic reasons, however, two mutually symmetrical curves of the side surfaces 42 are preferred.
  • lines 60 are applied to the membrane 30, into which the electrical signal can be fed, with an array of permanent magnets 62 being arranged on at least one side of the membrane 30, which are spaced apart from the membrane 30 and are spaced apart from one another. so that the sound waves can propagate between the permanent magnets 62 .
  • Such lines 60 are shown schematically, for example, in FIG. 4b.
  • the lines 60 can be arranged on the membrane 30 in a meandering manner.
  • the lines 60 can be applied to the membrane 30 in such a way that the lines 60 form one or more coils 70 .
  • Fig. 4a shows a plan view of the housing of the transducer 20; Fig. 4b shows a top view of the membrane 30 of the converter 20 and Fig. 4c shows a side view of the converter 20.
  • the housing of the converter 20, ie the converter housing 22, can preferably have holes 92 and embossings 90. This can be seen, for example, in Fig 4a sketched schematically.
  • the sound waves can leave the converter 22 through the holes 92 of the converter housing 22 .
  • heat can be at least partially transported away through the holes 92 by convection. A better dissipation of the generated heat can take place through the converter housing 22, which is preferably made of metal.
  • the embossings 90 can dissipate the resulting heat in a targeted manner as cold fins.
  • the embossments 90 give the converter housing 22 stability.
  • the membrane 30 is arranged in the converter housing 22, the membrane being sketched in FIG. 4b.
  • Fig. 4c shows in a side view that the permanent magnets 62 to the Membrane 30 and spaced apart are attached.
  • the permanent magnets 62 are arranged, for example, on an array or directly on a side of the converter housing 22 facing the membrane 30 .
  • the membrane 30 can be clamped between two beads 98 (see FIG. 4c).
  • the converter 20 with its clamped membrane 30 is designed to generate translational vibrations 96 in the deflection area 32 and rotational vibrations 94 in the clamping area 36 . Due to the fact that the perforations 50 are arranged closer to the clamping area 36 than to the deflection area 32, the rotational vibrations 94 that are generated can preferably leave the housing 40 without being reflected, so that a larger proportion of the rotational vibrations 94 in relation to the translational vibration end genes 96 can reach a user's hearing .
  • the lines 60 on the membrane 30 are in the form of coils 70 and are arranged on the membrane 30 .
  • the lines 60 are preferably arranged in a meandering manner on the membrane, in particular printed on it.
  • a further array of permanent magnets 62 is also arranged on the second side of the membrane 30 , which are spaced apart from the membrane 30 and spaced apart from one another so that the sound waves can propagate between the permanent magnets 62 .
  • the permanent magnets 62 are arranged in a fixed manner. This means that when a signal is applied to the leads 60, the membrane 30 moves relative to the stationary permanent magnets 62 together with the leads 60.
  • An AC voltage is preferably applied to the lines 60 so that the membrane 30 begins to oscillate.
  • the side faces 42 are preferably connected via a connecting area 44 so that the side faces 42 are closer together in the connecting area 44 , with the perforations 50 being arranged predominantly or completely in the connecting area 44 .
  • the connection area 44 faces one of the two clamping areas 36 of the membrane 30 .
  • the connecting area 44 is formed by the areas of the side faces 42 which adjoin one another, in particular which are connected to one another.
  • the perforations 50 are arranged closer to each other in the connection area 44 . In particular, the perforations 50 are arranged closer to one another where two side surfaces 42 merge into one another.
  • the side surfaces 42 preferably run vertically to a bottom surface 46 and/or to a top surface 47 of the housing 40.
  • the bottom surface 46 and the top surface 47 run parallel to one another and/or are configured congruently to one another.
  • the surface area of the base surface 46 and the roof surface 47 is preferably the same.
  • the bottom surface 46 and the roof surface 47 run parallel to one another, but do not run on top of one another, but rather offset from one another.
  • the side surfaces 42 are not arranged perpendicularly to the bottom surface 46 and to the roof surface 47 .
  • the bottom surface 46 and the roof surface 47 have different surface areas. In such a case, the side surfaces 42 are not arranged perpendicularly to the bottom surface 46 and to the roof surface 47 .
  • the bottom surface 46 and the roof surface 47 preferably have a parabolic surface, a hyperbolic surface or an elliptical surface.
  • a parabolic roof surface 47 is shown, for example, in Figs. 1 and 2 to see.
  • the symmetry axes 80 or tangents 80 associated with this surface preferably make an angle of 30°.
  • the perforations 50 extend predominantly or entirely along a side surface 42 in the connecting region 44 perpendicular to a region 48 around the apex of the parabolic or hyperbolic or elliptical surface.
  • the area 48 around the apex forms the connection area 44 in which two side surfaces 42 are connected to one another.
  • a material 52 that absorbs sound waves is preferably arranged on the bottom surface 46 and/or on the roof surface 47 .
  • a sound absorbing material 52 may be placed on the side surfaces 42 where perforations 50 are not provided on the housing. It is namely also conceivable that a pair of perforations 50 are provided on the side faces 42 of the housing, so that the pair of perforations 50 are opposite the deflection area 32 . As a result, translational vibrations 96 can also leave the housing 40 directly.
  • the side faces 42 are preferably made of metal or another material that reflects sound waves.
  • the transducer 20 is attached to a side surface 42 at one end and spacedly abuts the connection portion 44 at an opposite end.
  • the side surface 42 on which the transducer 20 is attached lies between the two side surfaces 42 which are connected to one another via the connection region 44 .
  • the first mechanism or excitation is translation.
  • Translation describes the linear motion of the air molecules or atoms with respect to the molecule's center of gravity.
  • the second type of excitation is rotation, in which the air molecules or atoms spin around the center of gravity of the molecule.
  • the center of gravity is indicated at 700 in FIG.
  • the third mechanism is the vibrational mechanism, in which the atoms of a molecule move back and forth toward and away from the center of gravity of the molecule.
  • FIG. 6 shows a flowchart of a method 600 for operating a loudspeaker system 10.
  • the method 600 comprises in step 610 providing a loudspeaker system 10 as has been described herein; and in step 620, applying a signal to the transducer such that an electrical signal is converted to a sound wave and a portion of the sound waves propagate through the perforations 50 to an external environment of the speaker system 10.
  • An AC voltage signal is preferably applied to the lines 60 of the coil 70 in order to operate the loudspeaker system 10 .
  • the membrane 30 can be excited to vibrate in relation to the stationary permanent magnet 62 .
  • Fig. 7 shows a flowchart for producing a speaker system 10.
  • the method 800 includes in step 810 providing a converter 20, which converts an electrical signal into sound waves, and shows in step 820 a clamping of a membrane 30, so that the membrane 30 through the converted sound wave is deflected, with the membrane 30 being deflected in a deflection area 32 in relation to a rest position 34 of the membrane 30 and being deflected less or not at all in a clamping area 36 in relation to the deflection area 32 .
  • Step 830 includes providing a housing 40, and step 840 includes placing perforations 50 on the housing 40 in order to allow the sound waves to exit into an external environment; the perforations 50 being located closer to the clamping area 36 than to the deflection area 32 on the housing 40 .
  • Step 850 includes placing the transducer 20 in the housing 40.
  • the method 800 for manufacturing a loudspeaker system 10 preferably further comprises determining a geometry of the housing 40; determining a pattern of perforations 50 on the housing 40 such that sound waves can exit the housing through the perforations 50; and manufacturing the housing 40 with the determined geometry and pattern of perforations 50.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

L'invention concerne un système de haut-parleur (10) comprenant un transducteur (20) qui est conçu pour convertir un signal électrique en ondes sonores et qui comprend une membrane tendue (30) qui est conçue pour être déplacée par le signal électrique, la membrane (30) présentant une zone de déplacement (32) qui peut être déplacée par rapport à une position de repos (34) de la membrane (30), et une zone de fixation (36) qui peut être déplacée dans une moindre mesure ou ne pas être déplacée du tout par rapport à la zone de déplacement (32), et un boîtier (40) dans lequel le transducteur (20) est disposé, le boîtier (40) présentant des perforations (50) pour permettre une sortie des ondes acoustiques dans un environnement extérieur, les perforations (50) étant agencées sur le boîtier (40) principalement plus près de la zone de fixation (36) que de la zone de déplacement (32).
EP22703298.4A 2021-01-21 2022-01-20 Système de haut-parleur Pending EP4282161A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021200554.3A DE102021200554B4 (de) 2021-01-21 2021-01-21 Lautsprechersystem
PCT/EP2022/051255 WO2022157254A1 (fr) 2021-01-21 2022-01-20 Système de haut-parleur

Publications (1)

Publication Number Publication Date
EP4282161A1 true EP4282161A1 (fr) 2023-11-29

Family

ID=80445639

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22703298.4A Pending EP4282161A1 (fr) 2021-01-21 2022-01-20 Système de haut-parleur

Country Status (6)

Country Link
US (1) US20230362546A1 (fr)
EP (1) EP4282161A1 (fr)
CN (1) CN117378216A (fr)
DE (1) DE102021200554B4 (fr)
TW (1) TWI843047B (fr)
WO (1) WO2022157254A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6056083A (en) * 1997-02-24 2000-05-02 Daniell; Stephen S. Loudspeakers in architectural form
DE19819452C1 (de) 1998-04-30 2000-01-20 Boerder Klaus Verfahren und Vorrichtung zur elektroakustischen Übertragung von Schallenergie
US20070258617A1 (en) * 2005-03-01 2007-11-08 Todd Henry Electromagnetic lever diaphragm audio transducer
KR20100092992A (ko) * 2009-02-11 2010-08-24 주식회사 비에스이 콘덴서 마이크로폰 케이스의 음향홀 형성 방법
EP3288295B1 (fr) 2011-03-30 2021-07-21 Kaetel Systems GmbH Procédé de rendu d'une scène audio
US20130028459A1 (en) * 2011-07-28 2013-01-31 Yunlong Wang Monolithic Silicon Microphone
US8948441B2 (en) 2012-03-14 2015-02-03 Harman International Industries, Inc. Planar speaker system
DE102013221752A1 (de) 2013-10-25 2015-04-30 Kaetel Systems Gmbh Ohrhörer und verfahren zum herstellen eines ohrhörers
DE102013221754A1 (de) 2013-10-25 2015-04-30 Kaetel Systems Gmbh Kopfhörer und verfahren zum herstellen eines kopfhörers
TWM491131U (zh) * 2014-08-27 2014-12-01 Illuminati Entpr Co Ltd 整合揚聲器的崁燈
KR101736994B1 (ko) 2015-11-26 2017-05-17 현대자동차주식회사 차량에 탑재된 스피커의 그릴 제어 방법 및 장치
US10309594B1 (en) * 2017-05-01 2019-06-04 Mallory Sonalert Products, Inc. Stack light
DE102017125117A1 (de) * 2017-10-26 2019-05-02 USound GmbH Schallwandleranordnung
CA3103582C (fr) * 2018-06-15 2023-06-13 Shenzhen Voxtech Co., Ltd. Haut-parleur a conduction osseuse et son procede de test

Also Published As

Publication number Publication date
DE102021200554B4 (de) 2023-03-16
TWI843047B (zh) 2024-05-21
TW202236864A (zh) 2022-09-16
CN117378216A (zh) 2024-01-09
DE102021200554A1 (de) 2022-07-21
US20230362546A1 (en) 2023-11-09
WO2022157254A1 (fr) 2022-07-28

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