CN106096321B - In conjunction with the indoor and outdoor sound transmission analogy method of Ray-Tracing Method and acoustic beam tracing - Google Patents
In conjunction with the indoor and outdoor sound transmission analogy method of Ray-Tracing Method and acoustic beam tracing Download PDFInfo
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- CN106096321B CN106096321B CN201610579030.1A CN201610579030A CN106096321B CN 106096321 B CN106096321 B CN 106096321B CN 201610579030 A CN201610579030 A CN 201610579030A CN 106096321 B CN106096321 B CN 106096321B
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Abstract
The present invention proposes the indoor and outdoor sound transmission analogy method of a kind of combination Ray-Tracing Method and acoustic beam tracing, specifically: three-dimensional space subdivision being carried out to the exterior space first, and using acoustic beam tracing simulated sound in outdoor propagation, when acoustic beam encounters door and window, the acoustic beam is divided into several sub- acoustic beams according to the shape of door and window, and record the sub- acoustic beam that will be entered the room, and its minor acoustic beam then continues to propagate in outdoor, it constantly repeats the above process, until reaching preset sound transmission threshold value；Then the sub- acoustic beam recorded is utilized, several search angular ranges of each point source of sound can be obtained by geometric operation, for each point source of sound, only emits sound ray in each search angular range of its record, then can use Ray-Tracing Method and carry out the propagation of simulated sound indoors.The sound field that the present invention is applied to three-dimensional indoor and outdoor spaces calculates, and can effectively improve the computational efficiency of region sound field, and ensure the computational accuracy of room sound field.
Description
Technical field
The present invention relates to Indoor environment, outer acoustic propagation, in particular to a kind of combination Ray-Tracing Method and acoustic beam with
The indoor and outdoor sound transmission analogy method of track method.
Background technique
With the development of the social economy, problem of noise pollution is got worse.Wherein, traffic noise, man-made noise, building are made an uproar
The outdoor noises such as sound are the main sources of city noise, these noises have seriously affected the life activities such as people's rest, work
It is normally carried out.By propagation of the analogue noise outside Indoor environment, foundation can be provided for the prevention and treatment and control of noise.
Ray-Tracing Method and acoustic beam tracing are the methods that two kinds of common simulated sounds are propagated.
Acoustic beam tracing tracks the propagation of sound as unit of acoustic beam, and this method has the advantages that computational efficiency is high.However
Requirement of this method to data structure and uniformly subdivision is very high, complicated for operation, and phenomena such as sound scattering difficult to realize, refraction
Simulation.
Ray-Tracing Method is as unit of sound ray one by one, to track the propagation of sound.This method is easy to operate.Also, it should
Method is outer in addition to direct projection, reflection that sound can be considered, it is also contemplated that scattering, phenomena such as reflecting, compared to acoustic beam tracing,
This method applicability is stronger.In the case where sound ray is close enough, the sound transmission analog result of this method is more accurate.However,
This method computational efficiency is more much lower than acoustic beam tracing, when simulating the sound transmission in most complex scenarios, to reach certain simulation
Precision, it is necessary to spend great time cost.
Since the life activities such as the rest of people, work mainly all carry out indoors, people's makes an uproar when being in interior
Sound degrees of tolerance is lower than at outdoor, and accordingly, with respect to outdoor noise profile, people often focus more on noise in room
Interior distribution.However when utilizing the outer noise source of Ray-Tracing Method simulating chamber for indoor influence, most of the time but all by
Occupied by outdoor noise profile calculates.By combining Ray-Tracing Method and acoustic beam tracing, acoustic beam tracing calculating sound is utilized
Sound calculates outdoor noise source on indoor influence, although a little of outdoor can be sacrificed in outdoor propagation, and using Ray-Tracing Method
Perhaps computational accuracy, but whole computational efficiency can be made to greatly improve, and guarantee the sound field computational accuracy of room area.
Summary of the invention
It is an object of that present invention to provide a kind of combination Ray-Tracing Methods and the simulation of the indoor and outdoor sound transmission of acoustic beam tracing
Method, is a kind of method of outer sound transmission simulation of processing Indoor environment, this method combine Ray-Tracing Method and acoustic beam with
It the advantages of track method, can effectively improve the sound-filed simulation computational efficiency of whole region, and ensure the meter of Indoor environment sound field
Calculate precision.
For achieving the above object, The technical solution adopted by the invention is as follows:
A kind of indoor and outdoor sound transmission analogy method of combination Ray-Tracing Method and acoustic beam tracing comprising the steps of:
Step 1: being several triangular prisms by exterior space subdivision according to architecture enclosing boundary and the boundary of zoning
The subspace of shape, as the basis for accelerating sound transmission process outside acoustic beam tracing simulating chamber；
Step 2: if noise source is line source or area source of sound, discretization being carried out to noise source, forms a series of sound
Source；If noise source is point sound source, it is not necessarily to discretization, is directly carried out in next step；
Step 3: from point sound source, simulating it in the propagation of outdoor three-dimensional space, when acoustic beam is met using acoustic beam tracing
There is lap to metope, and with door and window, then the acoustic beam is divided by several sub- acoustic beams, every sub- acoustic beam according to the shape of door and window
Projection on metope is rectangle, and records the sub- acoustic beam that will be entered the room, and its minor acoustic beam then continues with sound
Beam tracing simulates it in outdoor propagation；
Step 4: the sub- acoustic beam generated in step 3, if encountering door and window, basis again in subsequent outdoor propagation process
The shape of door and window further divides sub- acoustic beam, constantly repeats the treatment process of step 3, passes until reaching preset sound
Broadcast threshold value；
Step 5: using the sub- acoustic beam that will be entered the room recorded in step 3, step 4, being obtained by geometric operation
Several search angular ranges of each point source of sound, for each point sound source, only in each search angular range of its record
Emit sound ray, and simulates the sound transmission of the point sound source indoors using Ray-Tracing Method.
Further, the noise source is located outside.
Further, the metope of the building is rectangle plane, or can be divided into several rectangle planes.
Further, the door and window of the building is rectangle plane, or can be divided into several rectangle planes.
Further, before carrying out sound transmission simulation, a fixed three-dimensional cartesian coordinate system is established, point source of sound,
Door and window, metope position described by its position in the coordinate system.
Further, before the sound transmission for simulating single point sound source using Ray-Tracing Method, all it is with the point sound source
Coordinate origin, establishes a spherical coordinate system, the x-axis of the coordinate system, y-axis, the z-axis x with fixed three-dimensional cartesian coordinate system respectively
Axis, y-axis, z-axis are parallel and positive identical.
Further, wherein in step 5, after sound is from the outside into the room in the form of sound ray, if it is returned to again
Outdoor is then still simulated using the propagation that Ray-Tracing Method carries out sound.
Compared with prior art, the beneficial effect of technical solution of the present invention is: first is that compared to being tracked using acoustic beam merely
Method simulated three-dimensional space indoor and outdoor generates distribution, and the invention avoids complicated number is used during computer simulation sound field
According to structure, and the subdivision requirement to three-dimensional space is reduced, and improve the precision of Indoor environment sound field calculating；Second is that compared to
Distribution is generated using Ray-Tracing Method simulated three-dimensional space indoor and outdoor merely, the present invention is calculated by improving outdoor buildings sound field
Efficiency, the whole sound field of effectively shortening calculates the time, more computing resources concentrated in the calculating of room sound field.
Detailed description of the invention
Fig. 1 is outdoor buildings uniformly subdivision schematic diagram；
Fig. 2 is that one of acoustic beam of point source of sound S encounters the schematic diagram of building window；
Fig. 3 is the schematic diagram of the sub- acoustic beam 1 formed after being split according to door and window shape；
Fig. 4 is the schematic diagram of the sub- acoustic beam 2 formed after being split according to door and window shape；
Fig. 5 is the schematic diagram of the sub- acoustic beam 3 formed after being split according to door and window shape；
Fig. 6 is fixed three-dimensional cartesian coordinate system and using point source of sound S as the spherical coordinates schematic diagram of coordinate origin；
Fig. 7 is to search for angle schematic diagram according to the Ray-Tracing Method that sub- acoustic beam 3 determines.
Specific embodiment
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；In order to better illustrate this embodiment, attached
Scheme certain components to have omission, zoom in or out, does not represent the size of actual product；
To those skilled in the art, it is to be understood that certain known features and its explanation, which may be omitted, in attached drawing
's.The following further describes the technical solution of the present invention with reference to the accompanying drawings and examples.
A kind of indoor and outdoor sound transmission analogy method of combination Ray-Tracing Method and acoustic beam tracing, firstly, according to building
Exterior space subdivision is triangular prism shape subspace one by one, as shown in Figure 1, empty by the boundary of object peripheral boundary and zoning
Between subdivision result can be used as the basis for accelerating the outer sound transmission process of acoustic beam tracing simulating chamber.
If noise source is line source or area source of sound, discretization is carried out to noise source, forms a series of point sound source；If making an uproar
Sound source is point sound source, then is not necessarily to discretization, directly the propagation simulation of progress sound.In Fig. 2, point S is a point source of sound, from this
Point sound source S sets out, and simulates its each acoustic beam in the propagation of outdoor three-dimensional space using acoustic beam tracing.As shown in Fig. 2, from this point
One of acoustic beam of sound source S transmitting encounters the metope of building, and has lap with the door and window on the metope.
The acoustic beam is divided into several sub- acoustic beams according to the shape of door and window, the every projection of sub- acoustic beam on metope is square
Shape.Acoustic beam as shown in Figure 2 is divided into three sub- acoustic beams as shown in figure 3, figure 4 and figure 5.Wherein, as shown in Figure 3, Figure 4
Sub- acoustic beam 1, sub- acoustic beam 2 then continue with acoustic beam tracing and simulate it in outdoor propagation, and sub- acoustic beam 3 as shown in Figure 5 is
The sub- acoustic beam that will be entered the room, then be recorded.If sub- acoustic beam 1 as shown in Figure 3, Figure 4, sub- acoustic beam 2 are in subsequent room
Door and window is encountered again in outer communication process, then sub- acoustic beam is further divided according to the shape of door and window, constantly repeats the above
Process, until reaching preset sound transmission threshold value.
The sub- acoustic beam 3 as shown in Figure 5 recorded is utilized, point source of sound S can be obtained by following method and pass through such as Fig. 5
Shown rectangular area ABCD enters the sound transmission behind interior: as shown in fig. 6, coordinate system Oxyz is a fixed three-dimensional straight
Angular coordinate system, point source of sound, door and window, metope position described by its position in the coordinate system；Using point source of sound S as coordinate
It is origin, establishes a spherical coordinate system Sxyz, as shown in fig. 6, the x-axis of the spherical coordinate system, y-axis, z-axis fixes three with above-mentioned respectively
The x-axis, y-axis, z-axis for tieing up rectangular coordinate system are parallel and positive identical；Utilize rectangular area ABCD as shown in Figure 5, available sound
Source point S the secondary propagation search angular range, as shown in fig. 7, the secondary propagation is in the horizontal direction in spherical coordinate system Sxyz
Search angular range be [θ1,θ2], search angular range in the vertical direction isFrom point source of sound S, upper
It states in search angular range and emits more sound rays, and simulate the propagation of sound ray indoors using Ray-Tracing Method；Sound ray is from room
After entering the room outside, if it returns to outdoor again, still simulated using the propagation that Ray-Tracing Method carries out sound.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (7)
1. the indoor and outdoor sound transmission analogy method of a kind of combination Ray-Tracing Method and acoustic beam tracing, which is characterized in that include
Following steps:
Step 1: being several triangular prism shapes by exterior space subdivision according to architecture enclosing boundary and the boundary of zoning
Subspace, as the basis for accelerating sound transmission process outside acoustic beam tracing simulating chamber；
Step 2: if noise source is line source or area source of sound, discretization being carried out to noise source, forms a series of point sound source；If
Noise source is point sound source, then is not necessarily to discretization, is directly carried out in next step；
Step 3: from point sound source, simulating it in the propagation of outdoor three-dimensional space, when acoustic beam encounters wall using acoustic beam tracing
Face, and have lap with door and window, then the acoustic beam is divided by several sub- acoustic beams according to the shape of door and window, every sub- acoustic beam is in wall
Projection on face is rectangle, and records the sub- acoustic beam that will be entered the room, and its minor acoustic beam then continue with acoustic beam with
Track method simulates it in outdoor propagation；
Step 4: the sub- acoustic beam generated in step 3, if door and window is encountered again in subsequent outdoor propagation process, according to door and window
Shape sub- acoustic beam is further divided, constantly repeat step 3 treatment process, until reaching preset sound transmission threshold
Value；
Step 5: using the sub- acoustic beam that will be entered the room recorded in step 3, step 4, being obtained by geometric operation each
Several search angular ranges of point source of sound only emit each point sound source in each search angular range of its record
Sound ray, and the sound transmission of the point sound source indoors is simulated using Ray-Tracing Method.
2. indoor and outdoor sound transmission analogy method according to claim 1, it is characterised in that: noise source is located outside.
3. indoor and outdoor sound transmission analogy method according to claim 1, it is characterised in that: the metope of building is rectangle
Plane, or several rectangle planes can be divided into.
4. indoor and outdoor sound transmission analogy method according to claim 1, it is characterised in that: the door and window of building is rectangle
Plane, or several rectangle planes can be divided into.
5. indoor and outdoor sound transmission analogy method according to claim 1, it is characterised in that: carrying out sound transmission simulation
Before, establish a fixed three-dimensional cartesian coordinate system, point sound source, door and window, metope position by it in the coordinate system
Position describes.
6. indoor and outdoor sound transmission analogy method according to claim 5, it is characterised in that: utilizing Ray-Tracing Method mould
Before the sound transmission of quasi-simple a point sound source indoors, all using the point sound source as coordinate origin, a spherical coordinate system is established, it should
The x-axis of coordinate system, y-axis, z-axis is parallel with x-axis, y-axis, the z-axis of fixed three-dimensional cartesian coordinate system respectively and forward direction is identical.
7. indoor and outdoor sound transmission analogy method according to claim 1, it is characterised in that: wherein in step 5, sound with
After the form of sound ray is from the outside into the room, if it returns to outdoor again, the biography of sound is still carried out using Ray-Tracing Method
Broadcast simulation.
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| CN108154557B (en) * | 2017-12-21 | 2021-04-13 | 桂林电子科技大学 | Triangular surface tiling method for silent area based on home environment |
| CN108376501B (en) * | 2018-04-27 | 2024-01-16 | 大连理工大学 | Environment noise identification system based on VR system and working method thereof |
| CN111781279B (en) * | 2020-07-02 | 2021-06-15 | 大连理工大学 | R-zone sound ray tracing algorithm for curved-surface fiber-reinforced resin-based composite material one-way plate |
| CN114239366B (en) * | 2021-12-23 | 2023-04-14 | 烟台中集来福士海洋工程有限公司 | Method for forecasting and evaluating environmental noise of outdoor field of offshore equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589676A (en) * | 2011-12-21 | 2012-07-18 | 中山大学 | Indoor space partitioning method applied to sound ray tracing |
| CN103778657A (en) * | 2014-02-28 | 2014-05-07 | 中山大学 | Space partition based sound beam tracing method |
| CN103853914A (en) * | 2013-12-23 | 2014-06-11 | 哈尔滨工程大学 | Method for rapidly estimating scattering sound field of underwater circular corner reflector |
-
2016
- 2016-07-20 CN CN201610579030.1A patent/CN106096321B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589676A (en) * | 2011-12-21 | 2012-07-18 | 中山大学 | Indoor space partitioning method applied to sound ray tracing |
| CN103853914A (en) * | 2013-12-23 | 2014-06-11 | 哈尔滨工程大学 | Method for rapidly estimating scattering sound field of underwater circular corner reflector |
| CN103778657A (en) * | 2014-02-28 | 2014-05-07 | 中山大学 | Space partition based sound beam tracing method |
Non-Patent Citations (2)
| Title |
|---|
| Dynamic Simulation of Traffic Noise by Applying Ray Tracing Method based on Indoor Space Partitioning;Zhibin Chen et al.;《Acta Acustica united with Acustica》;20141231;第100卷(第3期);第467-476页 |
| 一种结合室内空间剖分的声线跟踪法;蔡铭等;《应用声学》;20130131;第32卷(第1期);第34-38页 |
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