30 results about "Architectural acoustics" patented technology

The invention relates to an isostatic signal processing method for compensating a small-space audition acoustical environment. In order to realize indoor sound field signal processing based on a digital signal processing method, acquire playing signals for sound field isostatic compensation, and perform reverberation processing, the main technology namely the isostatic signal processing method comprises the following steps of: (1) correctly establishing key problems of an indoor autoregressive (AR) model, namely acquiring indoor response signals and selecting the order of the AR model; and (2) on the basis of a compensation algorithm structure of the model, realizing a reverberation processing method based on frequency response isostatic compensation. The equalizing signal processing method is different from an indoor sound field processing method of an indoor architectural acoustics design, and can be used for realizing corresponding sound field compensation processing for different acoustic rooms flexibly, and achieving different effects such as reverberation and the like according to different audition requirements.

The invention discloses a carbide slurry fly ash fiber-reinforced architectural flat plate and a manufacturing method thereof. The carbide slurry fly ash fiber-reinforced architectural flat plate comprises the components in percentage by weight as follows: 36 to 45 percent of carbide slurry, 42 to 48 percent of fly ash, 6 to 8 percent of cement, 5 to 8 percent of quartz sand, 6.5 to 9 percent of cellulose fiber and 1 percent of poly-acetamide. The manufacturing method of the carbide slurry fly ash fiber-reinforced architectural flat plate comprises the following steps: step I, fiber refinement; step II, material feeding and pulping according to a formula; III, pulp storage, pulp discharge, pick-up and forming; step IV, processing forming; and step V, coating and packaging. The invention has the advantages that by utilizing local industrial waste namely the carbide slurry and the fly ash as main raw materials and utilizing the cellulose fiber as a reinforcing material, the architectural flat plate which has a shrinkage deformation coefficient larger than that of an ordinary calcium silicate plate, and better fireproof performance is produced; the radioactivity measured value of thearchitectural flat plate is 10 to 20 percent of the minimum value allowed by a national regulation, so that the architectural flat plate belongs to green environmentally-friendly products; and not only the production process satisfies the requirement of circular economy, but products are plates for the fields of wall bodies, ceilings and architectural acoustics, which satisfy the requirements of componentization, assembly and dry work for architectural products, so that the architectural flat plate belongs to high-level architectural material products in the architectural products.

The invention discloses an electroacoustic DSP simulation module system based on hall architectural acoustics. According to the actual hall function requirements, the whole system comprises a plurality of simulation modules. The simulation modules can be disposed on different positions of the hall, and can be used independently or can be combined together, and then the corresponding architectural acoustic members can be replaced, and the functions and the effects of the architectural acoustic members can be realized. The simulation modules can be used for the simulation of the following architectural acoustic members such as the sound bridges, the light bridges, and the floating cloud plates, which are used for the reflection of the upper part of the stage; the reflected sound inclined plates, the angles of which are adjustable; the entablature big horn devices; the protruded diffusion plates; the two-dimensional diffusion bodies; the enhanced-type reflection plates; and the segmented absorption and reflection bodies. The simulation modules can be organized and invoked according to the actual requirements, and the adaptive adjustment of the module parameters can be carried out.

The invention relates to a microphone linear array and especially relates to the microphone linear array for sound scattering coefficient site test. The invention aims to solve the technical problems that the current sound scattering coefficient measurement has high requirement for material shape of test piece, the processing cutting is time-wasting and labor-wasting and the test period is long. According to the technical scheme provided by the invention, the microphone linear array for sound scattering coefficient site test comprises a U-shaped fixing bracket, wherein a rotatable triangular bracket is mounted at one end of the U-shaped fixing bracket; an angle adjusting disc is mounted at the other end of the U-shaped fixing bracket; connecting brackets are arranged on both triangular bracket and angle adjusting disc; a microphone mounting plate is fixed on the connecting brackets; a hole is formed on the microphone mounting plate; a microphone is fixedly mounted on the microphone mounting plate through a rubber sleeve. The microphone linear array for sound scattering coefficient site test can be applied to the site detection for irregular sound scattering coefficient of the sound diffuser in the field of architectural acoustics and also can be applied to the site test for the irregular sound scattering coefficient.

The invention discloses a noise detection device and method. The noise detection device comprises a noise detection probe used for collecting noise detection data, a wind speed detection probe used for collecting wind speed detection data, and a host computer connected with the noise detection probe and the wind speed detection probe and used for receiving the noise detection data and the wind speed detection data. According to the noise detection device and method, the problem of low detection efficiency during architectural acoustic environment detection is solved.

The invention discloses a layered movie theater video hall with box type independent unit system watching devices. More than one box type independent unit system watching device is arranged in the movie theater video hall. The movie theater video hall is divided into three layers, i.e., an equipment maintenance layer I, a motion platform layer II and a box cabin layer III. Each box type independent unit system watching device is structurally divided into three layers and three parts, e.g., a I-layer hydraulic device part, a II-layer channel shaft part and a III-layer box cabin system part. A sound system, a window and seats are arranged in each box cabin. According to the movie theater video hall with the box type independent unit system watching devices, audiences can enjoy the same sound effects; no-disturbing independent spaces are provided for the audiences, and the audiences can actively obtain various service functions provided by merchants in a seated state; and in addition, the interior of a movie theater building can be arbitrarily decorated to achieve a theme effect according to theme needs without the limitation of architectural acoustics.

The invention discloses a method for manufacturing an architectural acoustics 1: 10 reduced ruler head and torso simulator. The method comprises the first step of scanning a full-size standard head and torso simulator prototype through a three-dimensional laser scanner and storing the scanned data file as a DXF; the second step of guiding the DXF into a 3DMAX so that three-dimensional patch editing can be carried out on the DXF and an accurate three-dimensional curved surface digital model of the head and torso simulator can be obtained, wherein an auditory meatus is reserved in the head and torso simulator in the process of modeling; the third step of manufacturing the 1: 10 reduced ruler head and torso simulator through a 3D printing machine according to the designed three-dimensional digital model in a proportional zooming mode; the fourth step of vertically placing two microphones connected with rotary unions into the auditory meatus pre-reserved in the 1: 10 reduced ruler head and torso simulator to serve as a binaural signal receiver simulating the full-size head and torso simulator; the fifth step of plugging filler into a chest of the 1: 10 reduced ruler head and torso simulator. The 1: 10 reduced ruler head and torso simulator can be used for measuring hall space sense parameters in an acoustics reduced ruler model experiment and will be applied to the auralization technology.

According to an exemplary embodiment of the present disclosure, a computer readable medium containing a computer program is disclosed. The computer program includes commands which cause a processor of an acoustic simulation apparatus to execute steps, and the steps includes: acquiring building structure information related to a building constituting a simulation space; acquiring building material information related to at least one building material used in the simulation space; obtaining speaker information related to at least one speaker installed in the simulation space; obtaining location information on a current location of the acoustic simulation apparatus; recognizing a virtual location corresponding to the current location in the simulation space by analyzing the location information; generating an image viewed from the virtual location based on the building structure information, the building material information, and the speaker information; and generating sound to be heard at the virtual location based on the building structure information, the building material information, and the speaker information.

The invention discloses a set of self-adaptive sound propagation simulation method based on geometric acoustics, which can dynamically adjust the required sampling number based on an A-weighted variance index so as to reduce the redundant operand, improve the operation efficiency and improve the generated sound propagation simulation effect quality. The method mainly comprises the following steps: 1) inputting: acquiring an original audio and a virtual scene which need to be propagated; 2) estimating the sampling number: calculating the A-weighted variance of a single sample by using a test ray, and estimating the actually required sampling number; 3) propagation: performing impulse response calculation of the virtual scene by using the estimated sampling number; and 4) outputting: obtaining an audio result which can be heard by human ears or can be used for subsequent analysis and after propagation. The method can be combined with various commonly-used geometric acoustic sound propagation simulation frames, is applied to the fields of virtual reality, architectural acoustics and the like, is suitable for various different sound propagation scenes, original audios and sampling modes, and has high universality and stability.

The invention discloses a low-frequency broadband sound absorber inverse design method based on GP-BM, and the method comprises the steps of firstly building a to-be-optimized sound absorber model, and determining the m-dimensional characteristic parameters of the to-be-optimized sound absorber model and a to-be-optimized acoustic performance target; randomly generating q groups of characteristic parameters, calculating the acoustic performance of the characteristic parameters by using a finite element method, and constructing an n * (m + 1)-dimensional initial data set; then predicting a next group of characteristic parameters by using a UCB function based on GP-BM; finally, judging whether the predicted characteristic parameters meet the acoustic target or not, if not, expanding the predicted characteristic parameters to a data set, and performing cyclic prediction; and if so, outputting the characteristic parameter. The invention does not depend on a theoretical model and a large sample data set of the sound absorber, and the optimal acoustic performance target is obtained by performing probability description on the prediction process; according to the invention, the acoustic target can be quickly optimized by means of the small sample data set, the characteristic parameters of the low-frequency broadband sound absorber are efficiently and inversely designed, and the method has important application value in the fields of noise control, architectural acoustics and the like.

The invention provides an acoustic structure and a performance building. The acoustic structure comprises an outer wall; the inner wall and the outer wall are arranged at intervals, and a cavity is formed between the inner wall and the outer wall; a through mounting hole is formed in the inner wall; the sound adjusting plate is arranged in the mounting hole and is connected with the inner wall in an openable and closable manner; the sound adjusting plate is a sound reflection sound adjusting plate. A cavity is formed by the interval between the inner wall and the outer wall. The sound adjusting plate is mounted on the inner wall through the mounting hole, so that when the sound adjusting plate is opened, the space outside the inner wall is communicated with the cavity. When the sound adjusting plate is closed, the space outside the inner wall is disconnected from the cavity. Therefore, when the sound adjusting plate is in the closed state, because the sound adjusting plate is a sound reflection sound adjusting plate, the sound adjusting plate has a relatively strong reflection effect on sound, and the reverberation time of indoor sound can be prolonged. When the sound adjusting plate is in the open state, part of sound enters the cavity to be absorbed, and the sound reverberation time can be shortened. Therefore, according to the acoustic structure, the sound reverberation time can be adjusted.

The invention provides a suspension type sound absorbing board. The suspension type sound absorbing board comprises a sound absorbing board body and a suspending part making the sound absorbing boardbody installed on the inner wall of an inflatable air film gallery, and the sound absorbing board body is installed through the suspending part and a long-strip-shaped mounting hole formed in the inner wall of the inflatable air film gallery; the suspending part comprises a suspending cylinder, a sound absorbing board connector, an adjusting rod, a sealing cover, a mounting connecting rod and an air film connector. The suspension type sound absorbing board is novel in structure and convenience for installation and use, the suspension type sound absorbing board can be installed on the inner wall of the inflatable air film gallery in an inner buckle mounting mode, effective architectural acoustics reconstruction is conducted on the condition that normal use of the air film gallery is not affected, the acoustics environment in the inflatable air film gallery is significantly improved, the use effect of the inflatable air film gallery is improved, and popularization of the suspension typesound absorbing board is helped.

The embodiment of the invention discloses an architectural acoustic processing method and device, electronic equipment and a storage medium. The method comprises the steps that: a building model is constructed according to actual scene information of a target building, and a simulated sound field is established in the building model; actual acoustic parameters acquired by sound pickup equipment inthe target building are acquired; and based on the building model, expected actual sound field information of the target building is determined according to the simulated sound field and the actual acoustic parameters so as to be used for adjusting the actual sound field of the target building. According to the prior art, acoustic parameters are obtained according to drawing modeling and simulation, and as a result, a processing result is deviated and a large amount of time and manpower are consumed. With the technical schemes provided by the embodiment of the invention adopted, the above problems in the prior art can be solved, the accuracy and efficiency of architectural acoustic processing can be improved.

The invention provides an inner-riveting-type fixing fastener for architectural acoustic reconstruction. The fastener comprises an inner fastening plate, a suspension connecting piece, extension limiting sheets and limiting sheet adjusting mechanisms; a connecting hole is formed in the middle of the inner fastening plate, and limiting grooves are formed in the two sides of the inner fastening plate inwards; the extension limiting sheets are slidably mounted in the limiting grooves; one end of the suspension connecting piece is cooperatively connected with the connecting hole, and the other endof the suspension connecting piece is connected with a connecting screw; each limiting sheet adjusting mechanism comprises a silicon steel sheet, a connecting wire, a power source and a limiting spring; each silicon steel sheet is mounted at the groove bottom of the corresponding limiting groove; each connecting wire spirally winds the surface of the corresponding silicon steel sheet and is connected with the corresponding power source to form a loop; the silicon steel sheets and the extension limiting sheets are connected through the limiting springs. The fastener can be mounted simply by forming a long-strip-shaped mounting hole in a mounting surface, a sound absorbing material is fixedly mounted on the basis of reducing the damage degree of the mounting surface as much as possible, andthe possibility of effective architectural acoustic reconstruction is increased for air film museums and other places with soft mounting surfaces.