40results about "Room acoustics" patented technology

The invention belongs to the technical field of automatic control, and particularly relates to a large-span ellipsoidal glass structure space noise reduction method based on sound field optimization, and the method comprises the steps: 1, transmitting a sample noise in an ellipsoidal glass structure through a sound wave generator, building a sound wave propagation model to describe the behavior of the sample noise in the ellipsoidal structure, an incident sound field is obtained; 2, analyzing the propagation characteristics of the sample noise in the ellipsoidal glass structure to obtain an acoustic structure coupling equation, and solving the acoustic structure coupling equation to obtain structural vibration displacement; 3, obtaining a sound radiation field of the ellipsoidal glass structure according to the structural vibration displacement; and step 4, combining the incident sound field and the sound radiation field, and performing spatial noise reduction by reflecting the sound pressure of the sound field. According to the method, the problems of poor adaptability and low control precision of a traditional noise reduction method in a non-uniform structure are effectively solved, and the noise reduction efficiency, the control sensitivity and the environment adaptability of a building space are remarkably improved.

The invention discloses a sound chamber module system which is provided with walls on four sides and comprises a door to create an internal space, a main body frame arranged on one side of the wall, a video device arranged in the center of the main body frame and a plurality of audio devices arranged on two sides of the periphery of the video device, and the wall comprises a concrete layer. The sound absorption material layer is installed on the concrete layer, and the sponge component is doped with ferrite components. The sound absorption material layer comprises a semi-non-combustible sheet layer in which water and melamine resin powder are dissolved.

Disclosed is a system and method for mounting a panel (40) such as an acoustic panel, baffle or fin. The system for mounting the panel (40) can comprise an elongate member (12). A base (14) of the member (12) can be configured to enable it to be mounted with respect to a structure. Opposing sidewalls (13) of the member (12) can extend from the base (14) such that, in profile, the sidewalls define a neck portion (N) that extends to an enlarged head portion (H) of the member (12). The panel (40) can have a recess (42) formed in an edge thereof. The recess (42) can be configured to generally correspond to an external profile of the member (12). An inner recess portion (43) of the panel (40) can be enlarged to receive the member head portion (H), with an outer recess portion (45) being configured to receive the member neck portion (N). The outer recess portion (45) can open out of the panel edge such that, when the member (12) is located in the panel recess (42) it retains the panel (40) to the member (12).

The present application relates to the technical field of sound absorption diffuser, and discloses an MLS diffuser, which comprises a mounting plate, a plurality of MLS diffuser bodies and a plurality of connecting rods extending along a first direction; the mounting plate has a mounting surface in the first direction; the MLS diffuser body comprises a base plate and a plurality of MLS diffuser units, the MLS diffuser units are arranged on the peripheral wall of the base plate along the first direction, each base plate is connected with each connecting rod one by one, and is connected with the mounting surface through the connecting rod; the MLS diffuser bodies are arranged in an array on the mounting surface, and can move close to or away from the mounting surface along the first direction through the connecting rod. The MLS diffuser can provide uniform sound diffusion effect and improve auditory experience.

An acoustic panel assembly (1, 100, 130, 147, 148, 150) comprises a plurality of acoustic panel members (10, 110, 135, 147A, 148A, 155). A plurality of bridge portions (20) is configured to connect each of the acoustic panel members to at least one other acoustic panel member. The acoustic panel members each have at least two sidewall portions (52, 55) and an exterior face layer (70) comprising a pair of side portions (72, 75). The side portions (72, 75) of each exterior face layer (70) are configured to adhere to the sidewall portions (52, 55) of each acoustic panel member (10, 110, 135, 147A, 148A, 155). The acoustic panel assembly (1, 100, 130, 147, 148, 150) is easier to install and is applicable to a variety of wall surfaces. A method of manufacturing the acoustic panel assembly is provided.

The utility model discloses a sound reflecting cover structure for a stage. And the side plate of which the upper part is provided with the hanging bracket is arranged on a side plate balance frame with a hanging point through a hinge. A movable support with trundles and adjusting supporting legs is installed on the rear plate, and the movable support can be opened and can be fixed through a lock catch after being folded. A penetrating steel pipe is installed in the aluminum square pipes on the two sides of the aluminum honeycomb plate inner frame of the side plate, the side plate and the penetrating steel pipe are fixed together through screws, and a hanging bracket is installed on the penetrating pipe.

The invention discloses a sound reflecting cover structure for a stage. And the side plate of which the upper part is provided with the hanging bracket is arranged on a side plate frame with a hanging point through a hinge. A movable support with trundles and adjusting supporting legs is installed on the rear plate, and the movable support can be opened and can be fixed through a lock catch after being folded. A penetrating steel pipe is installed in the aluminum square pipes on the two sides of the aluminum honeycomb plate inner frame of the side plate, the side plate and the penetrating steel pipe are fixed together through screws, and a hanging bracket is installed on the penetrating pipe.

To provide a partition with improved acoustic characteristics, by which speaker's voice is easily transmitted to a listener, and a method for manufacturing the partition.SOLUTION: In a partition 1 with a substrate 10, a recess 20 is formed in a first side 12 in the thickness direction of the substrate 10, having an opening shape of a perfect circle and a curved surface 22 that deepens from the opening edge toward the center and a flat surface 24 located inside the recess, and a recess 30 is formed in a second side 14 in the thickness direction of substrate 10, having an opening shape of a perfect circle and a curved surface 32 that deepens from the opening edge toward the center and a flat surface 34 located inside the recess.SELECTED DRAWING: Figure 2

The utility model discloses an acoustic diffusion assembly based on magnetic attraction structure relates to acoustic diffusion board technical field, including diffusion board main part, and multiple diffusion board main parts are rectangular array distribution on the wall, and the rear surface of diffusion board main part is equipped with the positioning frame assembly connected on the wall, diffusion board main part includes the positioning plate connected with positioning frame assembly, the front surface of positioning plate is equipped with the diffusion portion for diffusing sound wave, positioning frame assembly includes the main frame of fixed setting with the wall with expansion bolt, the utility model discloses utilize the embedded magnet can connect diffusion board main part first on the outer wall of main frame, until constitutes a wall on the concert hall wall, when rotating the driving handle can realize the locking effect to diffusion board main part, can conveniently and efficiently complete the installation of diffusion board main part, and after the later period can flexibly remove diffusion board main part and carry out the recycling use, so that the building cost of concert hall obtains the saving.

The invention discloses a variable reverberation acoustic laboratory structure, which comprises a laboratory body and an environment conversion mechanism, the laboratory body comprises a first body, an experiment space is formed in the first body and is used for carrying out an acoustic experiment, and the environment conversion mechanism is arranged in the experiment space and comprises a plurality of driving units and a plurality of conversion columns, at least one conversion column can be synchronously and rotatably installed on one driving unit, the peripheral side of each conversion column is provided with a sound absorption part and a reflection part arranged on the back face of the sound absorption part, each sound absorption part is made of a sound absorption material, each reflection part is made of a sound reflection material, and the conversion columns are arranged on the back face of the sound absorption part. Furthermore, when the plurality of conversion columns rotate by a preset angle through the driven unit, a semi-anechoic chamber sound field environment and a reverberation chamber sound field environment can be formed in the first body, so that the experiment requirements of different acoustic environments are met.

This invention belongs to the field of indoor acoustic effects technology and discloses a sound reflector structure for indoor ceilings and its installation method. The sound reflector structure includes: a frame; a top plate; a spherical panel, with a first overlapping edge and a second overlapping edge forming an overlapping seam; the surface of the spherical panel has a water ripple texture to reflect and diffuse incoming sound waves; and a first filler material to fill the overlapping seam so that the spherical panel and the top plate fit together to enclose the frame; the spherical panel, the top plate, and the first filler material are all made of GRG material. This invention improves the sound field strength and reduces low-frequency absorption by designing the sound reflector with a unique water ripple texture and a specific curved surface calculated acoustically, and by using GRG material with superior acoustic performance. This improves the reverberation time and surround sound effect in the auditorium, achieving a balance between early and late reflections, thus realizing a purely natural sound environment.

The utility model belongs to the technical field of building decoration, and particularly discloses an angle-adjustable acoustic panel which comprises a rotatable panel layer, the rotatable panel layer is composed of a plurality of panel units, the top ends of the plurality of panel units are rotatably connected with a supporting plate, the supporting plate is fixedly connected to a building wall, and the panel units are arranged on the supporting plate. The bottom ends of the plurality of panel units are rotatably connected with a motor, the motor is detachably connected to a building bottom plate, the plurality of panel units comprise first-class panels and second-class panels, the first-class panels and the second-class panels have different shapes and are arranged at intervals, and the surface layers of the first-class panels and the surface layers of the second-class panels are wrapped with sound diffusion materials. According to the utility model, the first-class panels and the second-class panels with different shapes are arranged, the MLS diffusers are wrapped, and the MLS diffusers are arranged at intervals, so that sound waves can be reflected, refracted and scattered for multiple times on the surfaces of the diffusers with different thicknesses, the linear propagation path of the sound waves is broken, and more uniform sound energy distribution is realized.

The invention provides a surface layer additional type sound insulation cocoon house and a construction method thereof, and belongs to the technical field of architectural acoustic transformation. The sound insulation cocoon house is defined by a ground floating construction layer, a wall damping construction layer and a top face elastic construction layer, and a six-face physical decoupling independent inner container space is constructed. A honeycomb particle damping module is adopted in the wall damping structure layer, the internal space is divided into micro units arranged in an array mode through a multi-stage honeycomb core framework, and the units are divided into an upper-stage sub-cavity and a lower-stage sub-cavity which are communicated through throttling necks. The sub-cavities are filled with composite damping particle groups composed of elastic polymer particles and rigid ceramic particles in a graded mode, and the surfaces of the sub-cavities are covered with micro-perforated skin plates. A non-linear particle damping mechanism is used for replacing traditional fiber viscous energy dissipation, energy can still be efficiently dissipated at the wall surface boundary with the weak sound wave particle speed, and the low and medium frequency sound insulation performance is remarkably improved; meanwhile, gravitational accumulation and hardening of particles are prevented through a graded bearing structure, and the long-term acoustic stability of the sound insulation cocoon house is ensured.

The invention relates to an acoustic covering system for covering at least part of a boundary (B) of a room, the acoustic covering system being configured to provide variable sound absorption wherein the acoustic covering system comprises: a robust structure (2) configured to be attached to the boundary (B) such that the robust structure (2) and the boundary (B) form a space (S); and one or more panels (6) attached to the solid structure (2) and configured to selectively move relative to the solid structure (2) such that, in an open state of the acoustic covering system, one or more respective openings (45) are formed between the one or more panels (6) and the solid structure (2) on at least part of a periphery of the respective one or more panels (6), the acoustic covering system comprises one or more panels (6) and a boundary (B) to enable sound energy to pass through and reach sound absorbing means (12) within a space (S) between the one or more panels (6) and the boundary (B), where the sound energy is absorbed in the open state of the acoustic covering system when the acoustic covering system is installed to reduce the reverberation time RT in the room.

An acoustic structure includes a first core layer having a lattice structure between a first major surface and a second major surface, a first scrim coupled to the first major surface, a second scrim coupled to the second major surface, a second core layer having a lattice structure between a first major surface opposite a second major surface coupled to the second scrim, and a third scrim coupled to the second major surface of the second core layer. The acoustic structure has a bulk density of less than about 12 pounds per cubic foot.

Disclosed is a system and method for mounting a panel (40) such as an acoustic panel, baffle or fin. The system for mounting the panel (40) can comprise an elongate member (12). A base (14) of the member (12) can be configured to enable it to be mounted with respect to a structure. Opposing sidewalls (13) of the member (12) can extend from the base (14) such that, in profile, the sidewalls define a neck portion (N) that extends to an enlarged head portion (H) of the member (12). The panel (40) can have a recess (42) formed in an edge thereof. The recess (42) can be configured to generally correspond to an external profile of the member (12). An inner recess portion (43) of the panel (40) can be enlarged to receive the member head portion (H), with an outer recess portion (45) being configured to receive the member neck portion (N). The outer recess portion (45) can open out of the panel edge such that, when the member (12) is located in the panel recess (42) it retains the panel (40) to the member (12).

To provide a hung ceiling which does not damage an appearance in an indoor space and which can prevent fall of a ceiling material by suppressing swing in an earthquake.SOLUTION: A hung ceiling comprises: a plurality of module plates in which a ceiling face is divided into arbitrary face shapes having a center of gravity in the face; and a hanging wire hanging the module plates from a structure skeleton of a building. At least one-point of the center of gravity of the module plate is hung by the hanging wire. A hanging length of the hanging wire is adjusted to be set such that a natural period of the module plate does not match a natural period of the structure skeleton, to avoid resonance with the building.SELECTED DRAWING: Figure 4

Provided is a radio wave reflector that can reflect radio waves while the intensity thereof is maintained and that can maintain the scenery. The radio wave reflector of the present invention is a radio wave reflector for reflecting radio waves, wherein the intensity of a reflective wave as specular reflection of an incident wave is −30 dB or more relative to the intensity of the incident wave at a frequency, and the radio wave reflector has a total light transmittance of 65% or more as measured using a standard illuminant D65.

The utility model discloses a universe experience device, which relates to the technical field of universe, and comprises an experience room; spherical convex blocks are uniformly distributed on the inner side of the experience chamber, a mounting frame plate is arranged on the upper side of the interior of the experience chamber, and a filter box capable of purifying gas is arranged on the inner side of the mounting frame plate; a ceiling plate is installed at the upper end of the experience chamber and used for conducting guiding type discharging on liquid, the spherical protruding blocks are evenly distributed on the inner wall of the interior of the experience chamber, the longitudinal sections of the spherical protruding blocks are semicircular, and the spherical protruding blocks are used for reflecting sound; the universe experience device solves the problems that due to the fact that the universe experience device is in a totally-closed environment, an experiencer can breathe difficultly after staying in the totally-closed environment for a long time, and in conventional ventilation treatment, liquid such as rainwater enters the experience device due to factors such as raining, and electrical equipment such as a projector is damaged.

This invention provides a means to evaluate the acoustic environment of an indoor space while taking ambient noise into consideration. [Solution] The sound environment evaluation method comprises the steps of: inputting structural information indicating at least the shape of the indoor space and the form of the partition walls into a computer; setting up a virtual sound source inside the indoor space and inputting it into the computer; inputting background noise information indicating the background noise inside the indoor space into the computer; causing the computer to output sound environment information indicating the sound environment in the indoor space based on the structural information, virtual sound source, and background noise information; inputting background noise change information specifying the content of the change in background noise into the computer; and causing the computer to output modified sound environment information indicating the sound environment in the indoor space after the change in background noise based on the structural information, virtual sound source, background noise information, and background noise change information.

The invention relates to the field of sound absorption and noise reduction devices, and particularly discloses a spatial multi-face sound absorber which comprises a polyhedron and an acoustic black hole barrel, the polyhedron is defined by a plurality of panels, the acoustic black hole barrel comprises a large opening end and a small opening end, and the inner diameter of the symmetrical or eccentric acoustic black hole barrel gradually changes according to a power function rule; the large-opening end is fixedly connected to the panel, the small-opening end is located in the polyhedron, and the acoustic black hole cylinder enables the inner space and the outer space of the polyhedron to be communicated and is used for focusing sound waves outside the polyhedron into the polyhedron; through holes are distributed in the wall face and the panel of the acoustic black hole cylinder in an array mode, and a partition plate is arranged in the polyhedron and used for enhancing the sound wave focusing dissipation and resonance cavity resonance sound absorption effects of the through hole acoustic black hole cylinder. According to the invention, the acoustic black hole structure and the Helmholtz resonance cavity are combined, so that broadband efficient sound absorption is realized.

The utility model relates to a soundproof shed of eliminating low frequency standing wave, including the fixed frame that is assembled by a plurality of frame poles through the plug -in spare, the top and bottom of fixed frame are equipped with end sound insulation pad respectively, a plurality of side sound insulation pads are arranged to the side of fixed frame, and the access of the arbitrary side sound insulation pad is provided with the access of the person, and the soundproof door that can open or close the access is equipped at the access, its characterized in that: the included angle between end sound insulation pad and side sound insulation pad and the included angle between the adjacent side sound insulation pad that respectively locates the adjacent two sides are all equipped with low frequency trap, avoid low frequency standing wave to produce, guarantee the tone quality effect, protect human health.

The utility model relates to a plug-in type wedge wall surface and top surface mounting and dismounting mechanism, an upper fixing assembly and a lower fixing assembly which are used for fixing wall surface wedges of an anechoic chamber are respectively composed of an upper taper sleeve, a step shaft, an upper guide sleeve, a lower guide column and a lower guide sleeve, the upper taper sleeve is sleeved on the step shaft, the step shaft and the lower guide column are screwed on a wall surface guide rail, and the step shaft is sleeved on the upper guide sleeve. The upper guide sleeve and the lower guide sleeve are screwed on an inner C-shaped bracket of the wall wedge; the top fixing assembly used for fixing the top face wedge is composed of a combined shaft, a tip taper sleeve, a chuck and a spring rod, the combined shaft is sleeved with the tip taper sleeve and then fixed to the top face guide rail, the chuck is fixed to an inner C-shaped support of the top face wedge after being provided with the spring rod, and the spring rod penetrates into the chuck to fix the combined shaft in a self-dismounting mode. The wedges provided with the wall surface and top surface mounting and dismounting mechanism are arranged at some points or some rows of large-area wedges, other hook type common wedges can be quickly dismounted and replaced from the points or the rows, large-area sequential dismounting is avoided, and the maintenance efficiency is improved.

Acoustic false ceiling that, applicable to improve the reverberation time of the room in which it is installed, that is, the persistence of sound in the said room, while serving as acoustic insulation, and made from multilayer tiles, that is, made up of various layers joined together, each of said tiles comprises, at least: a lower visible layer, made up of a cork sheet; an intermediate layer thicker than the others, made up of a panel of acoustic insulating and absorbing material; and an upper concealed reinforcement layer, made up of a wooden plate with holes made therein; the intermediate acoustic insulating and absorbing layer is made up of a panel of heat-treated expanded cork

The utility model discloses a hidden low-frequency trap which comprises a first wall body and a second wall body, and the first wall body and the second wall body form a wall corner. The mounting groove is formed near the wall corner and is used for accommodating a low-frequency trap; the low-frequency trap is rotationally arranged in the mounting groove; and the rotating part is used for connecting the mounting groove and the low-frequency trap, so that the low-frequency trap can be switched between a hidden state and a use state around the rotating part. The low-frequency trap is completely stored in the mounting groove of the wall corner in the hidden state, the overall layout and the use space of a room are not affected, and the problem that a traditional low-frequency trap occupies the corner of the room is solved.

To provide a means for enabling evaluation of the sound environment of an indoor space taking background noise into consideration. [Solution] The sound environment evaluation method comprises the steps of inputting structural information indicating at least the shape of an indoor space and the form of partitions into a computer, setting a virtual sound source inside the indoor space and inputting the information into the computer, inputting background noise information indicating the background noise inside the indoor space into the computer, causing the computer to output sound environment information indicating the sound environment in the indoor space based on the structural information, virtual sound source, and background noise information, inputting background noise modification information that specifies the details of the modification to the background noise into the computer, and outputting modified sound environment information that indicates the sound environment in the indoor space after the modification to the background noise based on the structural information, virtual sound source, background noise information, and background noise modification information.