23 results about "Architectural acoustics" patented technology

1. The name of the design product: room low frequency calibration device. 2. The use of the design product: the design product is mainly used for the improvement and calibration of room acoustics in architectural acoustics, decoration. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: assembly state perspective view.

The invention relates to the technical field of building acoustic evaluation, in particular to a building sound insulation effect evaluation method and device, and the method comprises the steps: collecting a design drawing of a building and acoustic attribute parameters of used materials, building a three-dimensional geometric model based on a BIM technology according to the design drawing, and obtaining a sound insulation effect of the building according to the three-dimensional geometric model and the acoustic attribute parameters; constructing an initial architectural acoustic digital twinborn body; objective data and subjective quantitative data are synchronously collected in real time; comparing the real-time acquired data with the initial simulation data of the initial architectural acoustic digital twin and a preset standard spectrum library, and positioning a sound insulation weak point; feeding back the real-time acquired data to the initial architectural acoustic digital twinborn body, and calibrating the initial architectural acoustic digital twinborn body; and on the basis of the positioned sound insulation weak points, constructing a plurality of sound insulation optimization schemes in the calibrated architectural acoustic digital twin, and carrying out a virtual effect test to generate a comprehensive evaluation report. According to the invention, the sound insulation accuracy and efficiency can be improved.

The invention relates to the technical field of building acoustic environment monitoring, regulation and control, and discloses a real-time monitoring method for a building noise reduction and sound absorption part based on an acoustic sensor. According to the method, acoustic signals of a building target area are collected through a multi-channel acoustic sensor array, and a sound pressure level distribution map is generated; performing time-frequency domain decomposition on the atlas, separating low-frequency standing waves from high-frequency scattering components, and generating a sound energy absorption efficiency reference value by combining impedance characteristic parameters of a sound absorption component material; according to the reference value and a preset noise reduction target threshold value, dynamically dividing an acoustic sensitive area and marking the position of a sound absorption part needing to be optimized; based on the real-time sound pressure level change of the sensitive area, a nonlinear regression model is adopted to predict a performance attenuation curve of the sound absorption component, and an acoustic regulation and control parameter adjustment instruction is output; and the instruction is converted into the physical structure adjustment amount of the sound absorption component, and the monitoring frequency range of the sensor array is synchronously updated to adapt to the adjusted state. According to the method, dynamic linkage of monitoring and regulation is realized, and various building environment noise reduction requirements are met.

The invention provides an acoustic environment quality optimization method and device, electronic equipment and a storage medium, relates to the technical field of acoustic signal processing, and aims to determine an electroacoustic and sound reinforcement combined control strategy by calculating architectural acoustic parameters and taking balance of multi-element acoustic indexes as an optimization target. The method can adapt to the target buildings of different sizes and the dynamic change of the acoustic environment in the target building, and can carry out multi-target collaborative optimization according to the electroacoustic and sound reinforcement combined control strategy, thereby achieving the global optimal hearing experience, avoiding the strategy conflict between the electroacoustic equipment and the sound reinforcement equipment, and enabling the overall efficiency to be far beyond the sum of local optimization. Moreover, in the method, the building acoustic parameters are applied and are dominated, so that the optimization effect of the acoustic environment quality can be improved, and the optimization efficiency is improved. The method does not need to depend on subjective hearing and experience of technicians, but determines the electroacoustic and sound reinforcement combined control strategy in a target optimization mode, so that the labor cost can be reduced, and human errors cannot be introduced.

This utility model discloses a sound absorption and diffusion complex, characterized by comprising an installation frame, a sound-absorbing soft pad, and a polyester sound-absorbing diffuser. The soft pad and the polyester sound-absorbing diffuser are respectively disposed within the installation frame. The areas of the soft pad and the polyester sound-absorbing diffuser can be adjusted according to functional requirements. Increasing the area of ​​the soft pad increases the sound absorption coefficient of the product, while increasing the area of ​​the polyester sound-absorbing diffuser decreases the sound absorption coefficient, thereby increasing the sound diffusion function. This utility model is lightweight, easy and quick to install, and simple to manufacture, process, maintain, and replace, making it suitable for architectural acoustics engineering and noise control engineering.

The application relates to the technical field of building acoustics evaluation, and particularly relates to a building sound insulation effect evaluation method and device, which comprises the following steps: collecting design drawings of a building and acoustic attribute parameters of used materials, building a three-dimensional geometric model based on BIM technology according to the design drawings, and constructing an initial building acoustic digital twin according to the three-dimensional geometric model and the acoustic attribute parameters; synchronously collecting objective data and subjective quantitative data in real time; comparing the real-time collected data with initial simulation data of the initial building acoustic digital twin and a preset standard frequency spectrum library, and positioning sound insulation weak points; feeding back the real-time collected data to the initial building acoustic digital twin, and calibrating the initial building acoustic digital twin; constructing multiple sound insulation optimization schemes in the calibrated building acoustic digital twin based on the positioned sound insulation weak points, and performing virtual effect testing to generate a comprehensive evaluation report. The application is helpful to improve sound insulation accuracy and efficiency.

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 the technical field of architectural acoustic materials, in particular to an acoustic material recommendation method and system based on an indoor model, and the method comprises the steps: constructing a three-dimensional model according to an architectural plane graph, and carrying out the partitioning according to purposes to obtain a target region; adding a candidate acoustic material for the target area; determining the position of the sound source in the three-dimensional model; adding household articles with matched purposes to each target area according to user requirements; under the sound source sound production condition, multi-area sound field distribution is synchronously collected based on candidate acoustic material performance parameters; and screening adaptive acoustic materials from the candidate materials in combination with sound field distribution and acoustic requirements of each area. According to the invention, through scene modeling and data driving screening, the acoustic material is matched with the indoor scene, the function requirement and the personalized demand, the scientificity and the accuracy of material selection are improved, the functionality and the comfort degree of the indoor acoustic environment are guaranteed, and an efficient and feasible solution is provided for indoor sound field optimization.

1. The name of the design product: room low frequency calibrator. 2. The use of the design product: the design product is mainly used for the improvement and calibration of room acoustics in architectural acoustics, decoration. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

A construction component having an acoustic damping component e.g. an architectural or decorative product such as ceiling hung fins or panels (Figs 27-45) or a grid structure of beams 10 (Figs. 2, 3),

The invention discloses a semi-perforated composite facing porous particle acoustic board and a preparation method thereof, and belongs to the technical field of architectural acoustics and green decoration materials. The sound absorption plate is formed by compounding three layers of structures, namely a semi-perforated particle sound absorption base plate with non-perforated holes on one side, a bonding layer coated on a non-perforated area of the base plate, and a micro-perforated sound transmission facing layer attached to the bonding layer, the sound absorption plate is made of a PVC (polyvinyl chloride) wood grain film, a natural wood veneer or a flame-retardant fabric, and through micropores are formed in the surface of the sound absorption plate. Through the collaborative acoustic channel design of substrate semi-perforation and veneer micro-perforation, the excellent performance of high NRC value (larger than or equal to 0.70), A-level fire prevention, environmental protection, durability and the like of a particle acoustic board is reserved, meanwhile, the high-grade diversified decoration effects of wood grains, fabric and the like are achieved, the industrial problem that the sound absorption performance is seriously degraded due to traditional covering is thoroughly solved, and the sound absorption effect is improved. And the system is suitable for public and commercial spaces with high requirements on acoustics and aesthetics.

1. Name of the designed product: two-dimensional calibration device. 2. Use of the designed product: the designed product is mainly used for the device for improving and calibrating room acoustics in architectural acoustics, decoration. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view.

A composite flooring system includes a cross-laminated timber (CLT) subfloor including a plurality of drop holes, a plurality of isolators disposed on top of and attached to the CLT subfloor, a sprinkler main of a sprinkler system disposed between the plurality of isolators, a plurality of sprinkler drops attached to the sprinkler main which extend through the drop holes of the CLT subfloor, a plurality of metal inverted tracks attached to a top surface of the plurality of isolators, and an upper flooring attached to a top surface of the metal inverted tracks.

The utility model discloses an architectural acoustics optimizing device which comprises a wallboard, a silencing inner core is arranged in the wallboard, silencing cotton is arranged in the middle of the silencing inner core, cellular boards are arranged on the two sides of the silencing cotton, the inner diameter of each cellular board is of a gradually-shrunk structure, and therefore a trumpet-shaped structure is formed. A silencing cavity is formed between the honeycomb plate and the silencing cotton, and a first connecting plate and a second connecting plate are arranged on the two sides of the wall plate correspondingly. The honeycomb plates are arranged on the two sides of the silencing cotton, the inner diameters of the honeycomb plates are gradually reduced, the honeycomb plates form the horn-shaped structure, the silencing cavity is formed between the honeycomb plates and the silencing cotton, the honeycomb plates of the horn-shaped structure are beneficial to guiding sound waves into the silencing cavity, and the sound waves are reflected and dissipated in the silencing cavity. And a sound attenuation cavity is formed between the honeycomb plate and the sound attenuation cotton, so that the propagation path and the dissipation space of sound waves are further increased, and the sound insulation effect is improved.

This invention relates to the field of architectural acoustics technology and discloses a method for evaluating the sound insulation performance of buildings based on digital twins. The method includes: collecting sound pressure and acceleration integrals to obtain the vibration velocity at the measuring point, and separating the direct reflected sound pressure by stripping the surface radiated sound pressure; subsequently, calculating the boundary energy reflection coefficient and retrieving the local equivalent density at the measuring point; calculating the dispersion bending wave velocity and spatial phase delay based on the equivalent density; combining the spatial attenuation weight and the phase delay cosine factor to perform phase compensation spatial interpolation on the dynamic vibration velocity of the twin node; finally, mapping the equivalent density to the twin node to recalculate the wave velocity, constructing a dynamic apparent acoustic impedance based on the vibration velocity extreme values, thereby obtaining the transmission coefficient and converting it into a comprehensive dynamic building sound insulation index.

This utility model discloses a microparticle 3D sound-absorbing decorative brick, characterized in that it includes a microparticle sound-absorbing body, which is provided with multiple layers of annular borders. The inner diameter of the multiple annular borders decreases sequentially from top to bottom, forming a stepped inner wall structure. This utility model simplifies the structure, reduces costs, and improves sound absorption performance, meeting the practical application needs of architectural acoustics engineering and noise control engineering.

A multi-gradient micro-perforated plate low-frequency broadband sound absorption structure based on a sound wave black hole effect belongs to the field of low-frequency vibration and noise reduction, is integrally cylindrical and consists of N micro-perforated plates, N connecting plate sleeves and a base, the micro-perforated plates and the connecting plate sleeves are sequentially arranged from top to bottom, the micro-perforated plate is arranged on the topmost layer, the micro-perforated plates are connected through the connecting plate sleeves, and the micro-perforated plate on the lowermost layer is connected with the base through the connecting plate sleeve. The aperture, the perforation rate and the plate distance of the designed micro-perforated plate are gradually changed layer by layer from top to bottom, a multi-gradient structure is formed, the sound wave black hole effect is introduced, the sound wave propagation speed is gradually reduced, the path is prolonged, and step-by-step gathering and dissipation of sound energy are achieved in combination with viscous damping and resonance effects; the base is used for preventing sound energy leakage and enhancing low-frequency absorption; the invention has the advantages of wide sound absorption frequency band, excellent low and medium frequency absorption performance, compact structure, controllable parameters, easy processing and modular combination, and is suitable for the engineering fields of noise control, architectural acoustics and the like.

The invention discloses a convenient floor impact sound detection method, and relates to the technical field of architectural acoustic detection, and the method comprises the steps: 1, synchronously collecting a vibration acceleration signal and an environmental noise sound pressure signal of a to-be-detected floor; step 2, performing spectral analysis on the vibration acceleration signal and the environmental noise sound pressure signal, and calculating a vibration noise coefficient by identifying an overlapped interference frequency band to realize frequency-band correction of the vibration signal so as to obtain a pure vibration characteristic signal; step 3, comparing the sensitive frequency band energy proportion and the vibration attenuation time of the pure vibration characteristic signal with a preset proportion threshold value and a time threshold value to judge the sound insulation grade; meanwhile, the time window duration is adjusted according to noise fluctuation, and the anti-jamming capability to burst noise is improved; through targeted signal processing and dynamic interference suppression, the accuracy and adaptability of floor impact sound insulation performance detection in different noise environments are improved.

1. Name of the designed product: three-dimensional calibration device. 2. Use of the designed product: the designed product is mainly used for the device for improving and calibrating room acoustics in architectural acoustics and decoration. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view.

This application discloses a modular sound insulation panel, belonging to the field of architectural acoustics and noise control technology. It includes a metal outer frame, an internal sound-absorbing core layer, and a surface layer assembly on the front side of the metal outer frame. The sound-absorbing core layer comprises a gradient density foam layer and a Helmholtz resonator array plate, both sequentially installed inside the metal outer frame. The surface layer assembly includes a decorative perforated panel. Multiple sets of metal fasteners are provided on the front side of the metal outer frame, and multiple sets of magnetic fastening slots are opened on the back side of the decorative perforated panel. In use, the overall modular design allows users to freely combine panels with different sound-absorbing characteristics according to acoustic needs. The external surface layer assembly can be quickly disassembled and installed, and customization of the surface layer assembly ensures visual unity with the external home environment.

The invention provides a method for regulating and controlling a classroom acoustic environment through a wood material based on a genetic algorithm, and relates to the technical field of building physics and acoustic engineering, and the method comprises the four steps: building a classroom acoustic simulation model, defining material parameters and optimizing constraint conditions, carrying out genetic algorithm multi-objective optimization, and outputting an optimization scheme. According to the method, the genetic algorithm is combined with acoustic simulation, intelligent optimization of the classroom acoustic environment is achieved, a traditional design process depending on experience is converted into a data-driven scientific decision, and the cost is remarkably reduced while the acoustic quality is guaranteed. Meanwhile, acoustic performance and economical efficiency are balanced through multi-objective optimization, the material combination with the most cost performance can be automatically screened, the construction constraint that one material is arranged on each wall is strictly followed, it is guaranteed that the scheme can directly fall to the ground, and a universal frame is suitable for various classroom spaces; and an innovative solution with scientificity, economical efficiency and practicability is provided for architectural acoustic design.

This invention relates to the field of architectural acoustics and discloses a 3D-printed porous, hollowed-out sound-absorbing material, including extruded materials, linear materials, granular materials, powder-layer nozzle 3D-printed materials, laminated materials, and photopolymerized materials. Extruded materials mainly include thermoplastics, eutectic metals, and edible materials; linear materials include stainless steel and aluminum alloys; powder-layer nozzle 3D-printed materials include gypsum; laminated materials include paper, metal films, and plastic films; and photopolymerized materials include photocurable resins. This invention allows for the selection of different materials and processing models according to customer needs and acoustic design schemes, producing sound-absorbing materials with different properties and acoustic parameters, thereby meeting various acoustic requirements and solving various acoustic problems.

The utility model belongs to the field of architectural acoustics engineering, especially relates to a modular sound absorption board mounting frame for cinema, including wall body, frame body, sound absorption board body and mounting piece etc., multiple frame bodies are arranged neatly on the mounting surface of wall body, multiple mounting hole grooves that are equidistantly arranged are arranged on the left side and the right side of each frame body, one sound absorption board body is butted on each frame body, two mounting pieces that are symmetrically distributed are fixedly connected on each sound absorption board body. Through the modular combination structure between the frame body and the sound absorption board body, the quick locking mechanism that combines the clamping plate and the mounting piece is cooperated, so that the whole sound absorption system has good detachability and flexibility, when the sound absorption board body of a part appears damage or needs material upgrading, only needs to dismantle and replace the corresponding module locally, does not need to demolish the overall structure, significantly reduces the maintenance cost and construction difficulty, improves the convenience and economy of the later maintenance.