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 variable cross-section perforated double-layer sandwich broadband sound-absorbing panel relates to a sound-absorbing panel. In order to solve the problem that the existing wooden sound-absorbing panels have a narrow sound-absorbing frequency band. The panel, the upper core layer, the thin paper layer, the lower core layer and the back panel are bonded together from top to bottom in sequence. There are multiple through holes uniformly distributed along the thickness direction on the panel, and each through hole consists of a small diameter round hole. Composed of large-diameter round holes or conical holes, small-diameter round holes are set on the front of the panel, large-diameter round holes or conical holes are set on the back of the panel, and the diameter of the small-diameter round hole is equal to the diameter of the small end of the conical hole. The upper and lower core layers are both honeycomb core layers. The honeycomb core layer is composed of multiple hexagonal cylinders spliced ​​together. The inner cavity of each hexagonal cylinder is a honeycomb cavity. The multiple honeycomb cavities on the upper core layer communicate with the multiple honeycomb cavities on the lower core layer and the multiple through holes on the panel. The invention is used for indoor places where architectural design has higher requirements on acoustics.

The invention relates to the technical field of architectural acoustics, in particular to a diffuser, a sound field diffusion system and a private cinema. The diffuser provided by the present invention is used in a small audio-visual space, and includes a bottom plate and a diffusion protrusion connected to the bottom plate, and the distance from the highest point of the diffusion protrusion to the bottom plate is 55 mm to 65 mm. Aiming at the characteristics of sound wave propagation in small audio-visual spaces, the diffuser provided by the present invention can effectively diffuse sound waves with a frequency above 722 Hz, thereby making the sound in the small audio-visual space round, with a strong three-dimensional effect and good sound quality, thereby improving people's audio-visual experience and making it more It can meet people's spiritual needs, and people can enjoy high-quality music feasts without going to grand theaters or concert halls. In addition, the installation of the diffuser provided by the present invention can increase the best listening area in a small-sized equivalent space, which is called the "emperor area" by people, so that more people can enjoy good sound quality.

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.

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 an active nondirectional loudspeaker system with equalization. The system comprises an audio signal interface. The audio signal interface is connected to a digital filter. The digital filter comprises an inverse equalizer and a band pass filter. The digital filter is connected to a power amplifier. The power amplifier is connected to a loudspeaker. The loudspeaker comprises an inverse horn shape sound box and a low frequency sound box. In the invention, the size is small and the system only works in a test frequency scope required by a correlation standard; through testing a spatial multi-point transmission function of a loudspeaker, according to the multi-point transmission function, one digital signal filtering system is designed; an amplitude frequency response of the digital signal filtering system is at a peak valley and is inverse with an average amplitude frequency response of spatial multiple points of the nondirectional loudspeaker system so that purposes that the amplitude frequency response of the loudspeaker system is straight and an adjacent frequency range amplitude change is small are reached; and the system can be used for architectural acoustics and electroacoustic testing.

The invention provides an architectural acoustics transforming method for an inflatable air film pavilion. Sound absorption materials are mounted on the interior decorating surface of an air film through internal riveting fixing members in inclined, empty-rear-type and staggered modes. According to the architectural acoustics transforming method, the soft sound absorption materials are mounted onthe interior decorating surface of the air film through the internal riveting fixing members in the inclined, empty-rear-type and staggered modes, it is ensured that a certain safety space is formed between the soft sound absorption materials and the wall face of the inner wall of the air film, and the influence of swing of the air film due to wind load shaking on mounting of the sound absorptionmaterials can be effectively avoided; the contact area between the sound absorption materials and the space in the air film pavilion is effectively increased, meanwhile, a cavity in the wall face is additionally formed, and the low sound frequency can be effectively controlled; and the mounting mode is easy and stable, optional coverage mounting can be achieved, the mounting density is freely adjusted, and the problems of acoustic focus and the like are effectively solved.

The invention discloses a hall objective sound quality parameter measurement method and system based on pulse response noise reduction, and relates to the technical field of architectural acoustic measurement. According to the method, the amplitude of the frequency sweep signal is gradually increased at the head and gradually reduced at the tail by weighting the equal-amplitude frequency sweep signal, so that overlarge load and additional pulse caused by sudden change of the amplitude of the frequency sweep signal are avoided, and pulse response without tail pulse interference and with higher precision is obtained; the energy pulse response signals are cut off, so that the interference of the energy pulse response signals of which the head part and the tail part mainly comprise noise on the calculation precision is avoided, and the accuracy of a measurement result is improved; by performing noise reduction and truncated energy compensation processing on the energy pulse response signal, the noise in the signal is prevented from influencing the calculation precision of the objective tone quality parameter, so that the processed energy pulse response signal has a good signal-to-noise ratio under the condition that the background noise is relatively large, the measurement error is reduced, and the measurement accuracy is improved. And the accuracy of objective tone quality parameter measurement results is improved.

The invention relates to an indoor sound system. A music input end is connected with a music equalizing circuit, the music equalizing circuit is connected with a music frequency dividing circuit, the music frequency dividing circuit divides the music into medium high frequency and low frequency, the medium high frequency output end of the music frequency dividing circuit is connected with a voice and music mixing circuit, the low frequency output end of the music frequency dividing circuit is connected with a music and voice mixing circuit; a voice input end is connected with a voice equalizing circuit; the output end of the voice equalizing circuit comprises three ways, one is connected with a voice volume control circuit which is connected with the music and voice mixing circuit, the second is connected with a voice reverberation circuit which is connected with the voice and music mixing circuit, and the third one is connected with the music and voice mixing circuit; the music and voice mixing circuit is connected with a low pitch soundbox and the voice and music mixing circuit is connected with a whole frequency soundbox. The invention solves the defect that a room is too small to put a subwoofer, and also solves the problem of wizened and thin voice caused by the architectural acoustics environment.

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 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 the architectural 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 a high-performance sound level meter based on an ANDROID operating system. The sound level meter comprises a housing, wherein the top of the housing is provided with a microphone, the interior of the housing is provided with an ANDROID mainboard, a power module and an analog collection board, the outer side of the housing is fixedly provided with a man-machine interaction module, and the microphone is electrically connected with the analog collection board; and the analog acquisition board, the power supply module and the man-machine interaction module are electrically connected with the ANDROID mainboard. The meter is advantaged in that a technical problem that an original sound level meter is limited in operation function is solved, the ANDROID mainboard is arranged in the sound level meter, collected data of multiple channels can be processed at the same time, the sound level meter can be applied to architectural acoustics measurement, hall tone quality measurement, sound power measurement and the like, the application range is wide, an ANDROID system is integrated, and the function is convenient to add.

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 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 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 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 an active non-directional loudspeaker system with equalization, which includes an audio signal interface connected with a digital filter, the digital filter includes an inverse equalizer and a band-pass filter, and the digital filter is connected to There is a power amplifier, which is connected to the speakers, which include a counterhorn and a subwoofer. The invention is small in size and only works within the test frequency range required by relevant standards; by testing the spatial multi-point transfer function of the loudspeaker, and designing a digital signal filter system according to the multi-point transfer function, the amplitude frequency of the digital signal filter system The response is reciprocal to the amplitude frequency response of the omnidirectional speaker system on the peak and valley, so that the amplitude frequency response of the speaker system is relatively flat and the amplitude change of adjacent frequency bands is small; it can be used in architectural acoustics and electrical sound test.

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.

The invention relates to the technical field of architectural acoustics, in particular to a diffusion body, a sound field diffusion system and a private cinema. The diffuser body comprises a bottom plate and at least one groove group formed in the bottom plate; each groove group comprises a first groove, two second grooves, two third grooves and two fourth grooves; and the depth of each first groove is less than the depth of the corresponding second groove, the depth of each second groove is greater than the depth of the corresponding third groove, and the depth of each third groove is greaterthan the depth of the corresponding fourth groove. In one of the groove group, the first groove, one second groove, one third groove, one fourth groove, the other fourth groove, the other third groove and the other second groove are sequentially and evenly formed at intervals from the first side of the bottom plate to the second side of the bottom plate. According to the diffuser body, aiming atthe characteristic of sound wave propagation of a small audio-visual space, the sound of the small audio-visual space is made to be mellow and full, the stereoscopic sensation is high, the sound quality is good, and the audio-visual feeling of people is improved accordingly.

The invention relates to the technical field of architectural acoustics, in particular to an acoustic particle drop point simulation analysis method based on a three-dimensional space. The method comprises the following steps: 1, picking up a sound source point A, a reflecting surface A and a seat surface B; 2, uniformly taking points B on the reflecting surface A; 3, connecting the point B with the sound source point A to obtain a line segment A, and extending the line segment A to obtain a line segment B; 4, mirroring the line segment B by taking the point B as a reference point and referring to the reflecting surface A to obtain a line segment C after mirroring; 5, the seat surface B is moved upwards by a certain distance, and an actual audience surface C of the human ear is obtained; 6, extending the line segment C, wherein the intersection point of the extension line of the line segment C and the actual audience surface C is a point C; and 7, drawing a circle by taking the point Cas the center of the circle to obtain a circle A, and taking the circle A as the drop point of the actual acoustic particle. The acoustic particle drop point simulation analysis method based on the three-dimensional space is convenient for determining the drop point of the sound source point A in the three-dimensional space and visually representing the drop point through different colors.