CN114662185A - Indoor acoustic simulation design method, device, equipment and storage medium - Google Patents
Indoor acoustic simulation design method, device, equipment and storage medium Download PDFInfo
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Abstract
The application discloses an indoor acoustic simulation design method, device, equipment and storage medium. The method comprises the following steps: acquiring data of the house type of the building design; acquiring a house type geometric model arranged by the building design house type decorative material according to the building design house type data; acquiring an indoor acoustic simulation space model of a set building house type according to a house type geometric model arranged by the building design house type decorative material and the setting position information of sound source equipment in the house type geometric model; and acquiring an indoor acoustic simulation space grid model and field distribution of indoor acoustic design variables according to the indoor acoustic simulation space model of the set building house type and grid division of the indoor acoustic simulation space model. According to the method and the device, whether the current indoor design can fully meet the sound insulation requirement or not is known through obtaining the required house type for design and simulation, so that the use and the layout of the sound insulation material are adjusted, and a comfortable acoustic environment is created.
Description
Technical Field
The present disclosure relates generally to the field of building model design technologies, and in particular, to a method, an apparatus, a device, and a storage medium for indoor acoustic simulation design.
Background
Various sounds are enriched in daily life. In the home life or work and office, people are easily interfered by various external noises, such as traffic noise of streets and railways, people flow noise of squares, cities and the like, production noise of construction sites, factories and the like, or sound of neighboring instruments, television and the like; even in the same indoor place, people can interfere with each other due to different use requirements, such as interference of a conference room discussion sound on a colleague needing quiet work, interference of a parent watching television in a living room on a child sleeping in a bedroom, and the like. Therefore, in the interior decoration design, the sound insulation design for controlling noise according to the external environment and the use scene is required, the sound insulation material mainly comprises the selection and the layout of the sound insulation material, the sound environment beneficial to physical and mental health is created, and the comfort and the efficiency of life and production of people in space are improved.
In professional architectural acoustic design, a building space model with a certain scale ratio is usually required to be manufactured, and an acoustic experiment of the scale model is carried out. With the development of software technology, virtual acoustic experiments using computer acoustic simulations become a reality. Computer acoustic simulation, simulating the fluctuation and propagation of sound by a numerical calculation method, quantizing and visualizing design evaluation indexes (such as sound pressure level, reverberation time and the like), and achieving the prediction and evaluation of noise control and sound quality design. The designer may also further adjust and optimize the design based on these simulation results. Acoustic simulation techniques have been applied in spaces where the acoustic design is demanding and professional, such as hall buildings like concert halls and theaters, and industrial buildings like factory buildings and laboratories. Indoor acoustic simulation software includes EASE, ODEON, CATT, DIRAC, etc. The general flow of these software for indoor acoustic simulation is: a user manually draws a three-dimensional model of a space in three-dimensional modeling software and introduces the three-dimensional model into acoustic simulation software; designing and placing sound insulation materials in acoustic simulation software, determining acoustic attribute parameters of various interior decoration materials and sound transmission media (air), and placing a sound source; running simulation analysis; after the simulation analysis, professional interpretation and evaluation are also required to be carried out on the simulation result, and whether the design requirements are met or not is judged. Generally, the simulation process is complex, involves the use of a plurality of software and the acquisition of various material parameters, has high requirements on the speciality of users, and hinders the popularization and application of the technology to a certain extent. Therefore, the housing and office space are rarely, if ever, designed with sound insulation, and often only depend on the experience of designers, so that the rationality and comfort of the design cannot be evaluated in a scientific way. However, people live and work in such spaces most of the time, and the sound insulation effect of such spaces is particularly important.
For merchants selling sound-insulating products, such as sound-insulating walls, doors, windows, etc., sound-insulating performance is one of the major selling points. In addition to the sound insulation parameters indicated on the product brochure, in marketing scenarios, merchants typically demonstrate the sound insulation effectiveness of products through a specially designed sound insulation performance test box. The box body of the test box is made of good sound insulation materials, wherein one side of the box body is made of sound insulation products sold by merchants, and the other side of the box body is a movable side and can be opened or closed. A sound box is arranged in the box body to serve as a sound source, and when a merchant opens and closes the activity surface, a consumer can hear the comparison between the sound insulation product and the sound insulation product before and after use. Such marketing, while intuitive, is problematic. The sound-proof box is expensive to manufacture for the merchant, and it is impossible to manufacture every product sold in every store. For consumers, whether the sound insulation product is installed at home or not can not be determined due to factors such as different spaces, different sound sources and different other materials. Thus, there is a need for an intuitive, low-cost, reusable, environmentally friendly, personalized marketing tool for merchants to obtain consumer trust and orders.
Disclosure of Invention
In view of the above-mentioned drawbacks and deficiencies of the prior art, it is desirable to provide an indoor acoustic simulation design method, apparatus, device and storage medium, which can meet the specific requirements of the current indoor acoustic simulation design.
Based on one aspect of the embodiment of the present invention, the embodiment of the present application provides an indoor acoustic simulation design method, including:
acquiring building design house type data, wherein the building design house type data comprises floors, rooms, walls, supporting columns, house beams, the ground, roofs and windows;
acquiring a house type geometric model arranged by the building design house type decorative material according to the building design house type data;
acquiring an indoor acoustic simulation space model of a set building house type according to a house type geometric model arranged by the architectural design house type decorative material and the setting position information of sound source equipment in the house type geometric model;
and acquiring an indoor acoustic simulation space grid model and field distribution of indoor acoustic design variables according to the indoor acoustic simulation space model of the set building house type and grid division of the indoor acoustic simulation space model.
In another embodiment, the obtaining of the geometric model of the house type of the architectural design house type decorating material arrangement according to the architectural design house type data includes:
acquiring the building design house type data and decoration and finishing material data matched with the building design house type data;
acquiring associated information of each component of the decoration and fitment materials and the building design house type data according to the building design house type data and the decoration and fitment material data matched with the building design house type data;
acquiring the graphic rendering parameters and the material mapping information of the decoration and finishing materials of the building design house type according to the correlation information of the decoration and finishing materials and each component of the building design house type data;
and acquiring a house type geometric model of the visualized architectural design house type decorative material arrangement, which is rendered by the architectural design house type and the decorative material, according to the graphic rendering parameters and the material mapping information of the decorative material of the architectural design house type.
In another embodiment, the obtaining an indoor acoustic simulation space model for setting the house type of the building according to the house type geometric model arranged by the architectural design house type decoration material and the setting position information of the sound source device on the house type geometric model includes:
acquiring sound source parameters adapted to the house type geometric model according to the house type geometric model arranged by the building design house type decorative material;
acquiring spatial data of the indoor acoustic simulation according to the sound source parameters matched with the house type geometric model;
and acquiring an indoor acoustic simulation space model of the set building house type according to the space data of the indoor acoustic simulation.
In another embodiment, the obtaining an indoor acoustic simulation space mesh model according to the indoor acoustic simulation space model of the set building type and the mesh division of the indoor acoustic simulation space model includes:
acquiring simulated sound source data and transmission medium data of the indoor acoustic simulation space model according to the indoor acoustic simulation space model of the set building house type;
acquiring grid division data of the indoor acoustic simulation space model according to the simulation sound source data and the transmission medium data of the indoor acoustic simulation space model;
and acquiring the indoor acoustic simulation space grid model according to the grid division data of the indoor acoustic simulation space model, wherein the indoor acoustic simulation space grid model comprises the coordinates and the number of grid nodes and the node structure, the shape, the size and the number of grid units.
In another embodiment, the obtaining field distribution of the indoor acoustic design variable according to the indoor acoustic simulation space model of the set building type and the grid division of the indoor acoustic simulation space model includes:
calculating a field distribution of an indoor acoustic design variable using a pressure acoustic method, the pressure acoustic method comprising:
calculating the wave equation of sound propagation in indoor air:
wherein t is time, p is sound pressure, which is an unknown quantity, c is sound velocity, and q is a sound source;
solving the Helmholtz equation equivalent to the wave equation in the frequency domain:
where ω is the angular frequency of the sound wave,
obtaining the acoustic properties of the decoration and finishing material of the architectural design house type, and simulating the physical phenomena of absorption and penetration of barriers encountered by sound wave propagation by using impedance boundary conditions:
wherein ZiIs impedance, n is the normal vector of the boundary of the obstacle;
according to the indoor acoustic simulation space model, acquiring the sound pressure distribution of each simulation area in the indoor acoustic simulation space model, and calculating the field distribution of indoor acoustic design variables:
wherein p is0Is the absolute hearing threshold.
In another embodiment, the obtaining field distribution of the indoor acoustic design variable according to the indoor acoustic simulation space model of the set building type and the grid division of the indoor acoustic simulation space model includes:
calculating a field distribution of an indoor acoustic design variable using a geometric acoustic method, the geometric acoustic method comprising:
acquiring sound source rays radiated from a sound source;
according to the sound source ray, calculating attenuation data of the sound intensity of the sound source along the distance in the direction of the sound source ray;
according to attenuation data of the sound intensity of the sound source along with the distance in the sound source ray direction, obtaining the sound source distribution of each simulation area in the indoor acoustic simulation space model, and calculating the field distribution of indoor acoustic design variables:
wherein p is0For absolute hearing threshold, ρ is the air density.
In another embodiment, the obtaining field distribution of the indoor acoustic design variable according to the indoor acoustic simulation space model of the set building type and the grid division of the indoor acoustic simulation space model includes:
calculating a field distribution of an indoor acoustic design variable using an energy method comprising:
acquiring energy diffusion data of simulated sound waves and vibration, wherein an energy diffusion equation of the sound waves is as follows:
where w is the acoustic energy density, unknown, c is the speed of sound, mαQ is the volume absorption coefficient of the propagation medium, q is the sound source, J is the sound energy flux, and the sound energy flux caused by diffusion is in direct proportion to the energy gradient;
the acoustic energy flux
Wherein D istWhich is a diffusion coefficient, is related to the mean free path lambda of the acoustic particles,
the regular square-like room mean free path estimate is
Where V is the room area, S is the room surface area, and the mean free path for a room with a higher aspect ratio is estimated as
According to the acoustic properties of the set decorative material, the absorption and penetration phenomena when the simulated sound transmission meets the obstacle are obtained:
absorption:
where alpha is the sound absorption coefficient of the material,
penetration:
wherein S1 and S2 represent the incident position and the emergent position of the sound penetrating barrier, and tau is the penetration coefficient of the material. The relation with the sound insulation T of the material is that tau is 10-T/10；
According to the generated space grid model, the distribution of the acoustic energy density of each simulation area in the indoor acoustic simulation space model is obtained, and the field distribution of the indoor acoustic design variables is calculated
Wherein p is0To be the absolute hearing threshold, ρ is the air density.
Based on another aspect of the embodiments of the present invention, an indoor acoustic simulation design apparatus is disclosed, the apparatus comprising:
the system comprises a data acquisition module, a data acquisition module and a data processing module, wherein the data acquisition module is used for acquiring architectural design house type data, and the architectural design house type data comprises floors, rooms, wall bodies, supporting columns, house beams, the ground, a roof and windows;
the model construction module is used for acquiring a house type geometric model arranged by the building design house type decorative material according to the building design house type data; acquiring an indoor acoustic simulation space model of a set building house type according to a house type geometric model arranged by the building design house type decorative material and the setting position information of sound source equipment in the house type geometric model;
and the acoustic simulation module is used for acquiring an indoor acoustic simulation space grid model and field distribution of indoor acoustic design variables according to the indoor acoustic simulation space model of the set building house type and grid division of the indoor acoustic simulation space model.
In accordance with yet another aspect of an embodiment of the present invention, an electronic device is disclosed that includes one or more processors and memory, the memory for storing one or more programs; when the one or more programs are executed by the processor, the processor is enabled to implement the indoor acoustic simulation design method provided by the embodiments of the present invention.
Based on still another aspect of the embodiments of the present invention, a computer-readable storage medium storing a computer program is disclosed, which when executed, implements the indoor acoustic simulation design method provided by the embodiments of the present invention.
In the embodiment of the application, the data of the house type of the building design is obtained; acquiring a house type geometric model arranged by the building design house type decorative material according to the building design house type data; acquiring an indoor acoustic simulation space model of a set building house type according to a house type geometric model arranged by the building design house type decorative material and the setting position information of sound source equipment in the house type geometric model; and acquiring an indoor acoustic simulation space grid model and field distribution of indoor acoustic design variables according to the indoor acoustic simulation space model of the set building house type and grid division of the indoor acoustic simulation space model. According to the method and the device, whether the current indoor design can fully meet the sound insulation requirement or not is known through obtaining the required house type for design and simulation, so that the use and the layout of the sound insulation material are adjusted, and a comfortable acoustic environment is created.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is an application scenario diagram of an indoor acoustic simulation design method according to an embodiment of the present application;
FIG. 2 is a flow chart of a method for designing an indoor acoustic simulation provided by an embodiment of the present application;
fig. 3 is a schematic structural diagram of an indoor acoustic simulation design apparatus according to an embodiment of the present application;
fig. 4 is an internal structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Specifically, in the embodiment of the present application, the elevation of the architectural design space is obtained by subtracting the thinnest floor slab of the top elevation from the two derived elevations, adding the thickness of the finished surface and the thickest thickness of the ground finished surface, and transferring the object between the remaining areas to Snowdrop. And converting the existing objects in the Snowdrop, such as wall beam plate columns, into corresponding structural objects, otherwise, converting the existing objects into independent members.
The indoor acoustic simulation design method provided by the application can be applied to the application environment shown in fig. 1. The indoor acoustic simulation design method is applied to an indoor acoustic simulation design device. The indoor acoustic simulation design device can be configured in the terminal 102 or the server 104, or partially configured in the terminal 102 and partially configured in the server 104, and the terminal 102 and the server 104 interact to complete the indoor acoustic simulation design method.
Wherein the terminal 102 and the server 104 can communicate through a network.
The terminal 102 may be, but not limited to, various personal computers, notebook computers, smart phones, tablet computers, and portable wearable devices, the terminal 102 needs to have a function of receiving, viewing, editing, and sharing a shared 3D model scene, and the server 104 may be implemented by an independent server or a server cluster formed by a plurality of servers.
In one embodiment, as shown in FIG. 2, an indoor acoustic simulation design method is provided. The embodiment is mainly illustrated by applying the method to the terminal 102 in fig. 1.
Please refer to fig. 2, which shows an exemplary flow of an indoor acoustic simulation design method to which an embodiment of the present application may be applied.
As shown in fig. 2, in step 210, building design house type data including floors, rooms, walls, support columns, beams, floors, roofs, and windows is obtained.
Specifically, the architectural design house type data is data describing the structure and shape of an indoor space, including but not limited to the position, size, shape, interrelationship, etc. of the house type members such as floors, rooms, walls, pillars, beams, floors, roofs, doors, windows, etc. The database for storing the house type data supports screening and obtaining the house type data through keywords, such as database ID, location, cell name, building time, area, house type and the like, and supports uploading the house type data through the keywords.
The building design house type data can be a case that a user obtains designed data from some databases, can also be a design that the user is implementing, and can also be a case that the user searches data from a cloud house type database to obtain house type data. If the house type data cannot be acquired, prompting the user to use other modes to create the house type, such as importing a CAD file, a picture file, freely drawing and the like, identifying and extracting the house type data from the house type data, and supplementing the house type data back to the cloud house type database under the condition that the user allows.
In step 220, a house type geometric model arranged by the building design house type decorative material is obtained according to the building design house type data.
Specifically, the decoration and finishing material data is data describing various decoration and finishing materials, such as indoor and outdoor building materials, hard-pack materials, soft-pack materials, and the like, including but not limited to price, composition, geometry, attribute parameters, such as acoustic attributes including sound insulation amount, absorption rate, and the like, and information used for graphic rendering parameters, material maps, and the like. The database for storing the decoration and finishing materials supports the screening and acquisition of the data of the decoration and finishing materials through key words, such as database ID, classification, material, using position, manufacturer and the like.
The decoration and decoration material arrangement is to respond to the operations of adding and modifying the decoration and decoration materials by a user, obtain the required decoration and decoration materials from the cloud decoration and decoration material database, modify the definition of the decoration and decoration materials in the design scheme data, and visualize the real-time design scheme.
Specifically, in an embodiment of the present application, the obtaining a geometric model of a house type of the architectural design house type decoration material arrangement according to the architectural design house type data includes:
acquiring the building design house type data and decoration and finishing material data matched with the building design house type data;
acquiring associated information of each component of the decoration and fitment materials and the building design house type data according to the building design house type data and the decoration and fitment material data matched with the building design house type data;
acquiring the graphic rendering parameters and the material mapping information of the decoration and finishing materials of the building design house type according to the correlation information of the decoration and finishing materials and each component of the building design house type data;
and acquiring a house type geometric model of visual building design house type decorative material arrangement rendered by the building design house type and the decorative material according to the graphic rendering parameters and the material mapping information of the decorative material of the building design house type.
In step 230, an indoor acoustic simulation space model for the house type of the building is obtained according to the house type geometric model arranged by the architectural design house type decoration material and the setting position information of the sound source device on the house type geometric model.
Specifically, according to the design scheme data, a simulation area is determined, and a geometric model of a simulation space is constructed. When the simulation is carried out with low precision, the simulation area is an indoor space enclosed by the foundation hardwares, such as a wall, a roof, a ground, a door and a window, etc.; when highly accurate simulations, the simulation area may further take into account the details of the decoration and deduct the space occupied by the movable furniture and equipment. Obtaining information such as acoustic properties of the decoration and fitment material, such as sound insulation quantity and absorption rate, according to the data of the design scheme, and associating the acoustic design with a corresponding part in the simulation space geometric model; and acquiring the definition of the sound source, and adding the definition into the acoustic simulation analysis. In addition, the propagation medium defining the acoustic simulation area is air, and the acoustic properties of the medium are added to the simulation analysis.
Specifically, in an embodiment of the present application, the obtaining an indoor acoustic simulation space model for setting a building house type according to the setting position information of the house type geometric model and the sound source device arranged by the building design house type decoration material in the house type geometric model includes:
acquiring sound source parameters adapted to the house type geometric model according to the house type geometric model arranged by the building design house type decorative material;
acquiring spatial data of the indoor acoustic simulation according to the sound source parameters matched with the house type geometric model;
and acquiring an indoor acoustic simulation space model of the set building house type according to the space data of the indoor acoustic simulation.
In step 240, an indoor acoustic simulation space grid model and field distribution of indoor acoustic design variables are obtained according to the indoor acoustic simulation space model of the set building type and grid division of the indoor acoustic simulation space model.
Specifically, the simulated indoor acoustic simulation space grid model is subjected to grid division to generate the indoor acoustic simulation space grid model, and the indoor acoustic simulation space grid model comprises the coordinates and the number of grid nodes and information such as the node structure, the shape, the size and the number of grid units. And associating the decoration materials, the sound source equipment position and the simulation parameters associated with the part of the space geometric model to the corresponding part of the indoor acoustic simulation space grid model.
And carrying out indoor acoustic simulation analysis and solving on the indoor acoustic simulation space grid model to obtain field distribution of indoor acoustic design variables such as sound pressure level and the like.
Specifically, in an embodiment of the present application, the obtaining an indoor acoustic simulation space mesh model according to the indoor acoustic simulation space model of the set building type and the mesh division of the indoor acoustic simulation space model includes:
acquiring simulated sound source data and transmission medium data of the indoor acoustic simulation space model according to the indoor acoustic simulation space model of the set building house type;
acquiring grid division data of the indoor acoustic simulation space model according to the simulation sound source data and the transmission medium data of the indoor acoustic simulation space model;
and acquiring the indoor acoustic simulation space grid model according to the grid division data of the indoor acoustic simulation space model, wherein the indoor acoustic simulation space grid model comprises the coordinates and the number of grid nodes and the node structure, the shape, the size and the number of grid units.
Specifically, in an embodiment of the present application, the obtaining field distribution of an indoor acoustic design variable according to the indoor acoustic simulation space model of the set building type and the grid division of the indoor acoustic simulation space model includes:
calculating a field distribution of an indoor acoustic design variable using a pressure acoustic method, the pressure acoustic method comprising:
calculating the wave equation of sound propagation in indoor air:
wherein t is time, p is sound pressure, which is an unknown quantity, c is sound velocity, and q is a sound source;
solving the Helmholtz equation equivalent to the wave equation in the frequency domain:
wherein, omega is the angular frequency of the sound wave,
obtaining the acoustic properties of the decoration and finishing material of the architectural design house type, and simulating the physical phenomena of absorption and penetration of barriers encountered by sound wave propagation by using impedance boundary conditions:
wherein ZiIs impedance, n is the normal vector of the boundary of the obstacle;
according to the indoor acoustic simulation space model, acquiring the sound pressure distribution of each simulation area in the indoor acoustic simulation space model, and calculating the field distribution of indoor acoustic design variables:
wherein p is0Is the absolute hearing threshold.
Specifically, in an embodiment of the present application, the obtaining field distribution of an indoor acoustic design variable according to the indoor acoustic simulation space model of the set building type and the grid division of the indoor acoustic simulation space model includes:
calculating a field distribution of an indoor acoustic design variable using a geometric acoustic method, the geometric acoustic method comprising:
acquiring sound source rays radiated from a sound source;
according to the sound source ray, calculating attenuation data of the sound intensity of the sound source along the distance in the direction of the sound source ray;
according to attenuation data of the sound intensity of the sound source along with the distance in the sound source ray direction, obtaining the sound source distribution of each simulation area in the indoor acoustic simulation space model, and calculating the field distribution of indoor acoustic design variables:
wherein p is0To be the absolute hearing threshold, ρ is the air density.
Specifically, in an embodiment of the present application, the field distribution of the indoor acoustic design variable obtained according to the indoor acoustic simulation space model of the set building type and the grid division of the indoor acoustic simulation space model includes three types:
the method comprises the following specific calculation modes of a pressure acoustic method, a geometric acoustic method and an energy method:
specifically, in an embodiment of the present application, the obtaining field distribution of an indoor acoustic design variable according to the indoor acoustic simulation space model of the set building type and the grid division of the indoor acoustic simulation space model includes:
calculating a field distribution of an indoor acoustic design variable using an energy method comprising:
acquiring energy diffusion data simulating sound waves and vibration, wherein an energy diffusion equation of the sound waves is as follows:
where w is the acoustic energy density, unknown, c is the speed of sound, mαQ is the volume absorption coefficient of the propagation medium, q is the sound source, J is the sound energy flux, and the sound energy flux caused by diffusion is in direct proportion to the energy gradient;
the acoustic energy flux
Wherein D istWhich is a diffusion coefficient, is related to the mean free path lambda of the acoustic particles,
the regular square-like room mean free path estimate is
Where V is the room area, S is the room surface area, and the mean free path for a room with a higher aspect ratio is estimated as
According to the acoustic properties of the set decorative material, the absorption and penetration phenomena when the simulated sound transmission meets the obstacle are obtained:
absorption:
where alpha is the sound absorption coefficient of the material,
penetration:
wherein S1, S2 represent the incident position and the exit position of the sound penetrating the obstacle, and τ is the penetration coefficient of the material. The relation with the sound insulation T of the material is that tau is 10-T/10；
According to the generated space grid model, the distribution of the acoustic energy density of each simulation area in the indoor acoustic simulation space model is obtained, and the field distribution of the indoor acoustic design variables is calculated
Wherein p is0For absolute hearing threshold, ρ is the air density.
The indoor acoustic simulation design method obtains data of the house type of the architectural design; acquiring a house type geometric model arranged by the building design house type decorative material according to the building design house type data; acquiring an indoor acoustic simulation space model of a set building house type according to a house type geometric model arranged by the building design house type decorative material and the setting position information of sound source equipment in the house type geometric model; and acquiring an indoor acoustic simulation space grid model and field distribution of indoor acoustic design variables according to the indoor acoustic simulation space model of the set building house type and grid division of the indoor acoustic simulation space model. According to the method and the device, whether the current indoor design can fully meet the sound insulation requirement or not is known through obtaining the needed house type for design and simulation, so that the use and the layout of the sound insulation material are adjusted, and a comfortable acoustic environment is created.
It should be understood that, although the steps in the flowchart of fig. 2 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not limited to being performed in the exact order illustrated and, unless explicitly stated herein, may be performed in other orders. Moreover, at least a portion of the steps in fig. 2 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.
Fig. 3 is a schematic structural diagram of an indoor acoustic simulation design apparatus according to an embodiment of the present application, and as shown in fig. 3, the indoor acoustic simulation design apparatus includes:
the system comprises a data acquisition module, a model construction module and an acoustic simulation module;
the system comprises a data acquisition module, a data acquisition module and a data processing module, wherein the data acquisition module is used for acquiring building design house type data, and the building design house type data comprises floors, rooms, wall bodies, supporting columns, house beams, the ground, a roof and windows;
the model construction module is used for acquiring a house type geometric model arranged by the building design house type decorative material according to the building design house type data; acquiring an indoor acoustic simulation space model of a set building house type according to a house type geometric model arranged by the building design house type decorative material and the setting position information of sound source equipment in the house type geometric model;
and the acoustic simulation module is used for acquiring an indoor acoustic simulation space grid model and field distribution of indoor acoustic design variables according to the indoor acoustic simulation space model of the set building house type and grid division of the indoor acoustic simulation space model.
Specifically, in another embodiment of the present application, the model building module is configured to obtain the building design house type data and the decoration and finishing material data adapted to the building design house type data; acquiring associated information of each component of the decoration and fitment materials and the building design house type data according to the building design house type data and the decoration and fitment material data matched with the building design house type data; acquiring the graphic rendering parameters and the material mapping information of the decoration and finishing materials of the building design house type according to the correlation information of the decoration and finishing materials and each component of the building design house type data; and acquiring a house type geometric model of the visualized architectural design house type decorative material arrangement, which is rendered by the architectural design house type and the decorative material, according to the graphic rendering parameters and the material mapping information of the decorative material of the architectural design house type.
Specifically, in another embodiment of the present application, the model construction module is configured to obtain a sound source parameter adapted to the house type geometric model according to the house type geometric model arranged by the architectural design house type decoration material; acquiring spatial data of the indoor acoustic simulation according to the sound source parameters matched with the house type geometric model; and acquiring an indoor acoustic simulation space model of the set building house type according to the space data of the indoor acoustic simulation.
Specifically, in another embodiment of the present application, the acoustic simulation module is configured to obtain simulated sound source data and transmission medium data of the indoor acoustic simulation space model according to the indoor acoustic simulation space model of the set building type; acquiring grid division data of the indoor acoustic simulation space model according to the simulation sound source data and the transmission medium data of the indoor acoustic simulation space model; and acquiring the indoor acoustic simulation space grid model according to the grid division data of the indoor acoustic simulation space model, wherein the indoor acoustic simulation space grid model comprises the coordinates and the number of grid nodes and the node structure, the shape, the size and the number of grid units.
Specifically, in another embodiment of the present application, the acoustic simulation module is configured to calculate the field distribution of the indoor acoustic design variable using a pressure acoustic method, where the pressure acoustic method includes: calculating the wave equation of sound propagation in indoor air:
wherein t is time, p is sound pressure, which is an unknown quantity, c is sound velocity, and q is a sound source; solving the Helmholtz equation equivalent to the wave equation in the frequency domain:
wherein, omega is the angular frequency of sound wave, obtains the acoustic property of the decoration and finishing material of architectural design house type, uses impedance boundary condition simulation sound wave propagation to meet the physical phenomenon of absorption and penetration of barrier:
wherein ZiIs impedance, n is the normal vector of the boundary of the obstacle; according to the indoor acoustic simulation space model, sound pressure distribution of each simulation area in the indoor acoustic simulation space model is obtained, and field distribution of indoor acoustic design variables is calculated:
wherein p is0Is the absolute hearing threshold.
Specifically, in another embodiment of the present application, the acoustic simulation module is configured to calculate the field distribution of the indoor acoustic design variable using a geometric acoustic method, where the geometric acoustic method includes: obtainingSource rays emanating from a source; according to the sound source ray, calculating attenuation data of the sound intensity of the sound source along the distance in the direction of the sound source ray; according to attenuation data of the sound intensity of the sound source along with the distance in the sound source ray direction, obtaining the sound source distribution of each simulation area in the indoor acoustic simulation space model, and calculating the field distribution of indoor acoustic design variables:
wherein p is0For absolute hearing threshold, ρ is the air density.
Specifically, in another embodiment of the present application, the acoustic simulation module is configured to calculate the field distribution of the indoor acoustic design variable using an energy method, where the energy method includes: acquiring energy diffusion data of simulated sound waves and vibration, wherein an energy diffusion equation of the sound waves is as follows:
where w is the acoustic energy density, unknown, c is the speed of sound, mαQ is the volume absorption coefficient of the propagation medium, q is the sound source, J is the sound energy flux, and the sound energy flux caused by diffusion is in direct proportion to the energy gradient; the acoustic energy flux
Wherein D istWhich is the diffusion coefficient, is related to the mean free path lambda of the acoustic particles,
the regular square-like room mean free path estimate is
Where V is the room area, S is the room surface area, and the mean free path for a room with a larger aspect ratio is estimated as
Obtaining the simulated sound propagation encountering barrier according to the acoustic property of the set decoration materialAbsorption and penetration phenomena in time: absorption:
where α is the sound absorption coefficient of the material, penetration:
wherein S1, S2 represent the incident position and the exit position of the sound penetrating the obstacle, and τ is the penetration coefficient of the material. The relation with the sound insulation T of the material is that tau is 10-T/10(ii) a According to the generated space grid model, the distribution of the acoustic energy density of each simulation area in the indoor acoustic simulation space model is obtained, and the field distribution of the indoor acoustic design variables is calculated
Wherein p is0For absolute hearing threshold, ρ is the air density.
The indoor acoustic simulation design device obtains the data of the architectural design house type through the data acquisition module; the model construction module acquires a house type geometric model arranged by the building design house type decorative material according to the building design house type data; acquiring an indoor acoustic simulation space model of a set building house type according to a house type geometric model arranged by the architectural design house type decorative material and the setting position information of sound source equipment in the house type geometric model; and the acoustic simulation module acquires an indoor acoustic simulation space grid model and field distribution of indoor acoustic design variables according to the indoor acoustic simulation space model of the set building house type and grid division of the indoor acoustic simulation space model. According to the method and the device, whether the current indoor design can fully meet the sound insulation requirement or not is known through obtaining the needed house type for design and simulation, so that the use and the layout of the sound insulation material are adjusted, and a comfortable acoustic environment is created.
For specific definition of the indoor acoustic simulation design apparatus, reference may be made to the above definition of the indoor acoustic simulation design method, which is not described herein again. The modules in the indoor acoustic simulation design device can be wholly or partially realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In particular, according to an embodiment of the present disclosure, as shown in fig. 4, the present disclosure discloses an electronic device comprising one or more processors and memory, the memory for storing one or more programs; when the one or more programs are executed by the processor, the processor is enabled to implement the indoor acoustic simulation design method according to the embodiment of the invention.
In particular, according to an embodiment of the present disclosure, the indoor acoustic simulation design method described in any of the above embodiments may be implemented as a computer software program. For example, embodiments of the present disclosure include a computer program product comprising a computer program tangibly embodied on a machine-readable medium, the computer program containing program code for performing an indoor acoustic simulation design method. In such an embodiment, the computer program may be downloaded and installed from a network via the communication section, and/or installed from a removable medium.
The one or more programs are stored in a program in a read only memory ROM or a program in a random access memory RAM to perform various appropriate actions and processes. In the RAM, a software program for the server to perform a corresponding service is included, and various programs and data required for the driving operation of the vehicle are also included. The server and its controlled hardware devices, a read only memory ROM, a random access memory RAM are connected to each other through a bus, to which various input/output interfaces are also connected.
The following components are connected to the input/output interface: an input section including a keyboard, a mouse, and the like; an output section including a cathode ray tube CRT, a liquid crystal display LCD, and the like, a speaker, and the like; and a communication section including a network interface card such as a LAN card, a modem, or the like. The communication section performs communication processing via a network such as the internet. The driver is also connected to the input/output interface as needed. A removable medium such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive as necessary, so that a computer program read out therefrom is mounted in the memory as necessary.
In particular, according to an embodiment of the present disclosure, the indoor acoustic simulation design method described in any of the above embodiments may be implemented as a computer software program. For example, embodiments of the present disclosure include a computer program product comprising a computer program tangibly embodied on a machine-readable medium, the computer program containing program code for performing an indoor acoustic simulation design method. In such an embodiment, the computer program may be downloaded and installed from a network via the communication section, and/or installed from a removable medium.
The units or modules described in the embodiments of the present application may be implemented by software or hardware. The described units or modules may also be provided in a processor. The names of these units or modules do not in some cases constitute a limitation of the unit or module itself.
The foregoing description is only exemplary of the preferred embodiments of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (10)
1. An indoor acoustic simulation design method, characterized in that the method comprises:
acquiring building design house type data, wherein the building design house type data comprises floors, rooms, walls, supporting columns, house beams, the ground, roofs and windows;
acquiring a house type geometric model arranged by the building design house type decorative material according to the building design house type data;
acquiring an indoor acoustic simulation space model of a set building house type according to a house type geometric model arranged by the building design house type decorative material and the setting position information of sound source equipment in the house type geometric model;
and acquiring an indoor acoustic simulation space grid model and field distribution of indoor acoustic design variables according to the indoor acoustic simulation space model of the set building house type and grid division of the indoor acoustic simulation space model.
2. The method as claimed in claim 1, wherein the obtaining of the house type geometric model of the architectural design house type decorating material arrangement according to the architectural design house type data comprises:
acquiring the building design house type data and decoration and finishing material data matched with the building design house type data;
acquiring associated information of each component of the decoration and fitment materials and the building design house type data according to the building design house type data and the decoration and fitment material data matched with the building design house type data;
acquiring the graphic rendering parameters and the material mapping information of the decoration and finishing materials of the building design house type according to the correlation information of the decoration and finishing materials and each component of the building design house type data;
and acquiring a house type geometric model of the visualized architectural design house type decorative material arrangement, which is rendered by the architectural design house type and the decorative material, according to the graphic rendering parameters and the material mapping information of the decorative material of the architectural design house type.
3. The method as claimed in claim 1, wherein the obtaining of the indoor acoustic simulation space model of the set building house type according to the setting position information of the house type geometric model and the sound source device arranged by the building design house type decorative material on the house type geometric model comprises:
acquiring sound source parameters adapted to the house type geometric model according to the house type geometric model arranged by the building design house type decorative material;
acquiring spatial data of the indoor acoustic simulation according to the sound source parameters matched with the house type geometric model;
and acquiring an indoor acoustic simulation space model of the set building house type according to the space data of the indoor acoustic simulation.
4. The method of claim 1, wherein the obtaining an indoor acoustic simulation space mesh model according to the indoor acoustic simulation space model of the set building type and the mesh division of the indoor acoustic simulation space model comprises:
acquiring simulated sound source data and transmission medium data of the indoor acoustic simulation space model according to the indoor acoustic simulation space model of the set building house type;
acquiring grid division data of the indoor acoustic simulation space model according to the simulation sound source data and the transmission medium data of the indoor acoustic simulation space model;
and acquiring the indoor acoustic simulation space grid model according to the grid division data of the indoor acoustic simulation space model, wherein the indoor acoustic simulation space grid model comprises the coordinates and the number of grid nodes and the node structure, the shape, the size and the number of grid units.
5. The method of claim 4, wherein the obtaining the field distribution of the indoor acoustic design variables according to the indoor acoustic simulation space model of the set building type and the grid division of the indoor acoustic simulation space model comprises:
calculating a field distribution of an indoor acoustic design variable using a pressure acoustic method, the pressure acoustic method comprising:
calculating the wave equation of sound propagation in indoor air:
wherein t is time, p is sound pressure, which is an unknown quantity, c is sound velocity, and q is a sound source;
solving the Helmholtz equation equivalent to the wave equation in the frequency domain:
wherein ω is the angular frequency of the acoustic wave;
obtaining the acoustic properties of the decoration and finishing material of the architectural design house type, and simulating the physical phenomena of absorption and penetration of barriers encountered by sound wave propagation by using impedance boundary conditions:
wherein ZiIs impedance, n is the normal vector of the boundary of the obstacle;
according to the indoor acoustic simulation space model, acquiring the sound pressure distribution of each simulation area in the indoor acoustic simulation space model, and calculating the field distribution of indoor acoustic design variables:
wherein p is0Is the absolute hearing threshold.
6. The method of claim 4, wherein the obtaining the field distribution of the indoor acoustic design variables according to the indoor acoustic simulation space model of the set building type and the grid division of the indoor acoustic simulation space model comprises:
calculating a field distribution of an indoor acoustic design variable using a geometric acoustic method, the geometric acoustic method comprising:
acquiring sound source rays radiated from a sound source;
according to the sound source ray, calculating attenuation data of the sound intensity of the sound source along the distance in the direction of the sound source ray;
according to attenuation data of the sound intensity of the sound source along with the distance in the sound source ray direction, obtaining the sound source distribution of each simulation area in the indoor acoustic simulation space model, and calculating the field distribution of indoor acoustic design variables:
wherein p is0For absolute hearing threshold, ρ is the air density.
7. The method of claim 4, wherein the obtaining the field distribution of the indoor acoustic design variables according to the indoor acoustic simulation space model of the set building type and the grid division of the indoor acoustic simulation space model comprises:
calculating a field distribution of an indoor acoustic design variable using an energy method comprising:
acquiring energy diffusion data simulating sound waves and vibration, wherein an energy diffusion equation of the sound waves is as follows:
where w is the acoustic energy density, unknown, c is the speed of sound, mαQ is the volume absorption coefficient of the propagation medium, q is the sound source, J is the sound energy flux, and the sound energy flux caused by diffusion is in direct proportion to the energy gradient;
the acoustic energy flux
Wherein D istWhich is a diffusion coefficient, is related to the mean free path lambda of the acoustic particles,
the regular square-like room mean free path estimate is
Where V is the room area, S is the room surface area, and the mean free path for a room with a larger aspect ratio is estimated as
According to the acoustic properties of the set decorative material, the absorption and penetration phenomena when the simulated sound transmission meets the obstacle are obtained:
absorption:
wherein α is the sound absorption coefficient of the material;
penetration:
wherein S1, S2 represent the incident position and the exit position of the sound penetrating the obstacle, and τ is the penetration coefficient of the material. The relation with the sound insulation T of the material is that tau is 10-T/10；
According to the generated space grid model, acquiring the distribution of the acoustic energy density of each simulation area in the indoor acoustic simulation space model, and calculating the field distribution of indoor acoustic design variables:
wherein p is0For absolute hearing threshold, ρ is the air density.
8. An indoor acoustic simulation design apparatus, the apparatus comprising:
the system comprises a data acquisition module, a data acquisition module and a data processing module, wherein the data acquisition module is used for acquiring building design house type data, and the building design house type data comprises floors, rooms, wall bodies, supporting columns, house beams, the ground, a roof and windows;
the model construction module is used for acquiring a house type geometric model arranged by the building design house type decorative material according to the building design house type data; acquiring an indoor acoustic simulation space model of a set building house type according to a house type geometric model arranged by the building design house type decorative material and the setting position information of sound source equipment in the house type geometric model;
and the acoustic simulation module is used for acquiring an indoor acoustic simulation space grid model and field distribution of indoor acoustic design variables according to the indoor acoustic simulation space model of the set building house type and grid division of the indoor acoustic simulation space model.
9. An electronic device, comprising one or more processors and memory for storing one or more programs;
the one or more programs, when executed by the processor, cause the processor to implement the method of any of claims 1-7.
10. A computer-readable storage medium storing a computer program, characterized in that the computer program, when executed, implements the method of any one of claims 1 to 7.
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| CN117935781A (en) * | 2023-12-22 | 2024-04-26 | 深圳市润东来科技有限公司 | Audio signal processing method and system |
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| WO2024067543A1 (en) * | 2022-09-30 | 2024-04-04 | 抖音视界有限公司 | Reverberation processing method and apparatus, and nonvolatile computer readable storage medium |
| CN117935781A (en) * | 2023-12-22 | 2024-04-26 | 深圳市润东来科技有限公司 | Audio signal processing method and system |
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