EP2546830A2 - Procédé et dispositif de masquage actif du son - Google Patents

Procédé et dispositif de masquage actif du son Download PDF

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Publication number
EP2546830A2
EP2546830A2 EP12174570A EP12174570A EP2546830A2 EP 2546830 A2 EP2546830 A2 EP 2546830A2 EP 12174570 A EP12174570 A EP 12174570A EP 12174570 A EP12174570 A EP 12174570A EP 2546830 A2 EP2546830 A2 EP 2546830A2
Authority
EP
European Patent Office
Prior art keywords
sound
room
actuators
space
ceiling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP12174570A
Other languages
German (de)
English (en)
Other versions
EP2546830A3 (fr
Inventor
Arndt Steiner
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.)
pinta acoustic GmbH
Original Assignee
pinta acoustic 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 pinta acoustic GmbH filed Critical pinta acoustic GmbH
Publication of EP2546830A2 publication Critical patent/EP2546830A2/fr
Publication of EP2546830A3 publication Critical patent/EP2546830A3/fr
Withdrawn legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/8209—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only sound absorbing devices
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
    • E04B5/14—Load-carrying floor structures formed substantially of prefabricated units with beams or girders laid in two directions
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/001—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by provisions for heat or sound insulation
    • 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
    • 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
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G10K11/17857—Geometric disposition, e.g. placement of microphones
    • 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
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1785—Methods, e.g. algorithms; Devices
    • G10K11/17861—Methods, e.g. algorithms; Devices using additional means for damping sound, e.g. using sound absorbing panels
    • 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
    • G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
    • G10K11/1787—General system configurations
    • G10K11/17873—General system configurations using a reference signal without an error signal, e.g. pure feedforward
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/40—Jamming having variable characteristics
    • H04K3/45—Jamming having variable characteristics characterized by including monitoring of the target or target signal, e.g. in reactive jammers or follower jammers for example by means of an alternation of jamming phases and monitoring phases, called "look-through mode"
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/80—Jamming or countermeasure characterized by its function
    • H04K3/84—Jamming or countermeasure characterized by its function related to preventing electromagnetic interference in petrol station, hospital, plane or cinema
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B1/86—Sound-absorbing elements slab-shaped
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/006—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation with means for hanging lighting fixtures or other appliances to the framework of the ceiling
    • 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
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/12—Rooms, e.g. ANC inside a room, office, concert hall or automobile cabin
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3046—Multiple acoustic inputs, multiple acoustic outputs
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/321—Physical
    • G10K2210/3219—Geometry of the configuration
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/321—Physical
    • G10K2210/3224—Passive absorbers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K2203/00—Jamming of communication; Countermeasures
    • H04K2203/10—Jamming or countermeasure used for a particular application
    • H04K2203/12—Jamming or countermeasure used for a particular application for acoustic communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K2203/00—Jamming of communication; Countermeasures
    • H04K2203/30—Jamming or countermeasure characterized by the infrastructure components
    • H04K2203/34—Jamming or countermeasure characterized by the infrastructure components involving multiple cooperating jammers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2227/00—Details of public address [PA] systems covered by H04R27/00 but not provided for in any of its subgroups
    • H04R2227/001—Adaptation of signal processing in PA systems in dependence of presence of noise
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R27/00—Public address systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
    • H04R3/14—Cross-over networks

Definitions

  • the invention initially relates to a method for influencing noise in a room, such as a large office, wherein an active sound suppression and / or sound masking is performed.
  • the invention deals with the technical problem, an active sound suppression or sound masking in a larger space, eg. A large office, make advantageous.
  • a method for active suppression of noise in a room in which it is aimed that a plurality of sound actuators distributed over the surface of the room are provided and in the room further at least one sound sensor is arranged and two or more of the Sound actuators are acted upon differently in terms of sound detected by the sound sensor. It is essential that in the room whose sound image is to be influenced in whole or in part, with regard to detected sound sources, the sound actuators are acted differently to the generation of the counter sound for sound suppression or for generating sound for sound masking.
  • sound sensors in particular microphones are considered. It can be a or multiple microphones distributed throughout the room.
  • the sound actuators may be sound sources such as speakers.
  • a plurality of sound actuators but also a plurality of sound sensors are provided. Both can be provided, preferably evenly distributed in the room.
  • directed sound sensors such as directional microphones, can also be used. Hereby can also be detected a sound situation in an area of the room in which not directly or centrally such a sound sensor is arranged.
  • a sound masking can serve to compensate for a constantly fluctuating noise level in a room, for example a large office, and thereby achieve a higher acoustic comfort. It may be a uniform sound that can not be assigned to any identifiable sound source. This is usually perceived as less disturbing than a structured noise, which is generated approximately in a specific time sequence and / or with a certain frequency spectrum and / or with a certain signal spacing. With the sound masking is to be achieved that even with different occupancy of a large room with people, so for example, the difference between a fully or partially occupied open-plan office, a sound almost the same impression is conveyed. In addition, it can be achieved here that certain conversations taking place in one area of the room can not be identified with respect to the words in a wider area of the room.
  • the embodiments described herein may find particular application in large rooms used by people.
  • open-plan offices but also, for example, in classrooms, financial institutions, for example, a counter room of a bank, hotel rooms, for example, a hotel lobby, etc.
  • a loading of the sound actuators is carried out in accordance with a sound source moving over the surface of the room.
  • a sound source may, for example, be given in the form of a device moving through the room, such as a room care appliance, but also in the form of a group of people moving through the room in which one talks to each other.
  • a related detection of a moving sound source or a moving cluster of sound sources, such as the plurality of persons of said group of people can then be analyzed in a conventional manner with respect to sound values detected by the one or more sound sensors and a corresponding counter sound generated or a additional sound to be superimposed. With the movement of this sound source through the room, this sound can then be "passed on” to other sound actuators, which are arranged distributed in the direction of movement, or approximately in the direction of movement of said sound source, over the space.
  • a specific area of a room can become a discretion zone in which, for example, the sound output is controlled so that conversations conducted in this room area can not be understood outside of this room area.
  • a discretion zone can be formed as wandering through a room with people and / or devices.
  • a person and / or a device can emit detection signals, for example radio signals, by a radio transmitter located on the person or the device or object (this can also be, for example, a smart phone and / or an (entrance) chip card be assigned), and that associated with the control unit for influencing noise, a corresponding radio receiver is provided, which can identify a particular person or a specific object on it and accordingly by means of the control to which these signals are given, this person or this object special counter sound training or a special sound masking is assigned and / or special, possibly with the object or the person wandering, discretion zones are created in the manner described.
  • detection signals for example radio signals
  • detection signals such as radio signals that are emitted by a person or an object
  • these signals additionally or alternatively to control a sound output for the control of Lighting are used.
  • the lighting can be limited to this area, or the lighting can be amplified when certain signals are assigned to certain persons, such as surveillance personnel.
  • the detection of sound via the sound sensor is used as presence control or access control.
  • the detection of sound via the sound sensor is used as presence control or access control.
  • these are arranged on the ceiling side and / or wall side in the room.
  • they are arranged installed in other objects, for example in a so-called ceiling sail or in a wall acoustic part.
  • This may be a sound absorber, which is arranged on the wall or ceiling side in such a room.
  • a ceiling sail or sound absorbers are arranged as such or ceiling or wall elements as such.
  • the formation of such a ceiling sail or sound absorber is, for example.
  • the sound sensor and / or the sound actuator are arranged independently. This means that they are preferably wirelessly, for example via radio, controllable, further that within the ceiling element and a self-sufficient power supply, such as an accumulator, is provided for a sound sensor and / or a sound actuator.
  • the subject matter of the invention is also a sound absorber preferably to be fastened to a ceiling of a room, for example having a foam surface part.
  • a sound absorber preferably to be fastened to a ceiling of a room, for example having a foam surface part.
  • This object is achieved in a sound absorber in which it is geared to having a sound source.
  • the sound absorber preferably has a sound source in the form of a loudspeaker. It may also be a membrane film, which is excited about to produce sound. More preferably, the sound source, which is provided in the sound absorber, controllable in dependence on a detected sound, namely for active sound suppression controllable so that it emits a sound that leads as possible to cancel the noise or leads to the desired superposition of the existing sound field, to mask a local call.
  • the sound absorber comprises a sound sensor, preferably in the form of a microphone.
  • a sound output of the sound source can be carried out as a function of a sound source which may be provided movably in the room.
  • a schematic space 1 in the wall and / or ceiling side sound absorber 2 are arranged (in the embodiment, only wall-side sound absorber 2 are shown).
  • It is preferably a foam sound absorber, as already explained above.
  • a sound absorber consists in a simple case of a self-supporting Schallabsorberteil which is mounted on the ceiling or wall side via mounting rods or fasteners.
  • it can be a foam part, preferably a melamine resin foam base, which is accommodated in a frame part surrounding this edge, wherein attachment to the ceiling and / or the wall preferably takes place via the frame part.
  • sound actuators 3 and / or sound sensors 4 are provided.
  • an accumulator 5 is provided in or assigned to the sound absorber 2, for the power supply of the sound actuator 3 and / or the sound sensor 4.
  • an immediate power supply may be provided, in particular if the sound absorber 2, as known in principle, at the same time also equipped with light units that require a power supply anyway.
  • FIG. 2 is a schematic perspective view of a room 1 reproduced, in the ceiling side, the sound absorber 2 with the sound actuators 3 and / or the sound sensors 4 are arranged.
  • the particular sound determined via the sound sensors 4 is analyzed in a computer unit, as shown in detail, and then, as it were, a counter sound or sound masking sound is generated via the sound actuators 3, which in the case of the counter sound is preferably complete, or at least essentially directed to a considerable extent so in opposite directions, that cancel the sound and the counter-sound against each other.
  • one or more of the sound sensors 4 can also detect a wandering of a sound source through such a room, and a corresponding counter sound or masking sound can be "transferred” from one sound actuator 3 to another.
  • individual discretion zones as already explained in more detail above, can be formed and possibly also provided “wandering”.
  • the sound absorbers 2 or specifically corresponding ceiling canopies are preferably provided in such a way that about 20 to 60% of the ceiling and / or wall surface, preferably about 40% of the ceiling and / or wall surface, of which are covered in a projection on the ceiling or wall surface.
  • the accumulators 5 are preferably provided so that they are maintenance-free over a very long period of time, maintenance-free for about 1 to 2 years. It can also be provided that the state of charge of a rechargeable battery 5 is transmitted by radio or WLAN and can be interrogated.
  • the sound accumulators and / or the sound sensors in a frequency range of about 100 Hz to 2 kHz, more preferably from 125 Hz to 1 kHz, work.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Architecture (AREA)
  • Multimedia (AREA)
  • Electromagnetism (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Public Health (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Building Environments (AREA)
EP12174570.7A 2011-07-11 2012-07-02 Procédé et dispositif de masquage actif du son Withdrawn EP2546830A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011051727A DE102011051727A1 (de) 2011-07-11 2011-07-11 Verfahren und Vorrichtung zur aktiven Schallmaskierung

Publications (2)

Publication Number Publication Date
EP2546830A2 true EP2546830A2 (fr) 2013-01-16
EP2546830A3 EP2546830A3 (fr) 2017-12-06

Family

ID=46851275

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12174570.7A Withdrawn EP2546830A3 (fr) 2011-07-11 2012-07-02 Procédé et dispositif de masquage actif du son

Country Status (3)

Country Link
US (1) US20130016847A1 (fr)
EP (1) EP2546830A3 (fr)
DE (1) DE102011051727A1 (fr)

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EP3185240A1 (fr) * 2015-12-22 2017-06-28 Helmut-Schmidt-Universität Système et procédé permettant de réduire activement le bruit passant à travers une ouverture dans une barrière sonore
RU2683193C1 (ru) * 2018-05-18 2019-03-26 Никита Сергеевич Медвехкв Звукорассеивающая конструкция, оснащенная источником света

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DE102013007481B4 (de) * 2013-04-29 2014-12-04 DELUXE MCB UG (haftungsbeschränkt) Vorrichtung zur Schallreduzierung in Gasträumen
DE202013104545U1 (de) * 2013-10-08 2013-11-14 Sonus Gmbh Einrichtung zur aktiven und/oder passiven Beeinflussung der Raumakustik
USD917079S1 (en) 2013-11-15 2021-04-20 3Form, Llc Thin baffle
USD916348S1 (en) 2013-11-15 2021-04-13 3Form, Llc Light-weight lighting fixture
USD915632S1 (en) 2013-11-15 2021-04-06 3Form, Llc Baffle with reduced height
USD959030S1 (en) 2013-11-15 2022-07-26 3Form, Llc Baffle with slit end
US10889987B2 (en) 2017-05-19 2021-01-12 3Form, Llc Felt baffle with snap ends
USD915631S1 (en) 2014-11-14 2021-04-06 3Form, Llc Baffle with closed ends
US20160196832A1 (en) * 2015-01-06 2016-07-07 Gulfstream Aerospace Corporation System enabling a person to speak privately in a confined space
WO2016172446A1 (fr) 2015-04-24 2016-10-27 Rensselaer Polytechnic Institute Masquage sonore dans des espaces décloisonnés à l'aide de sons naturels
US9554207B2 (en) 2015-04-30 2017-01-24 Shure Acquisition Holdings, Inc. Offset cartridge microphones
US9565493B2 (en) 2015-04-30 2017-02-07 Shure Acquisition Holdings, Inc. Array microphone system and method of assembling the same
USD915634S1 (en) 2015-05-28 2021-04-06 3Form, Llc Tall baffle
US10354638B2 (en) 2016-03-01 2019-07-16 Guardian Glass, LLC Acoustic wall assembly having active noise-disruptive properties, and/or method of making and/or using the same
WO2017201269A1 (fr) 2016-05-20 2017-11-23 Cambridge Sound Management, Inc. Haut-parleur auto-alimenté pour masquage sonore
DE102016007391A1 (de) * 2016-06-17 2017-12-21 Oaswiss AG (i. G.) Antischallanordnung
US10367948B2 (en) 2017-01-13 2019-07-30 Shure Acquisition Holdings, Inc. Post-mixing acoustic echo cancellation systems and methods
US10726855B2 (en) * 2017-03-15 2020-07-28 Guardian Glass, Llc. Speech privacy system and/or associated method
US10304473B2 (en) 2017-03-15 2019-05-28 Guardian Glass, LLC Speech privacy system and/or associated method
US10373626B2 (en) 2017-03-15 2019-08-06 Guardian Glass, LLC Speech privacy system and/or associated method
WO2019231632A1 (fr) 2018-06-01 2019-12-05 Shure Acquisition Holdings, Inc. Réseau de microphones à formation de motifs
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