CN111709178B - Three-dimensional space-based acoustic particle drop point simulation analysis method - Google Patents
Three-dimensional space-based acoustic particle drop point simulation analysis method Download PDFInfo
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- CN111709178B CN111709178B CN202010429641.4A CN202010429641A CN111709178B CN 111709178 B CN111709178 B CN 111709178B CN 202010429641 A CN202010429641 A CN 202010429641A CN 111709178 B CN111709178 B CN 111709178B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/25—Design optimisation, verification or simulation using particle-based methods
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/12—Geometric CAD characterised by design entry means specially adapted for CAD, e.g. graphical user interfaces [GUI] specially adapted for CAD
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/10—Noise analysis or noise optimisation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
Abstract
The invention relates to the technical field of architectural acoustics, in particular to a three-dimensional space-based sound particle drop point simulation analysis method, which comprises the following steps of 1: picking up a sound source point A, a reflecting surface a and a seat surface b; step 2: uniformly taking points B on the reflecting surface a; and step 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 '; and 4, step 4: taking the point B as a reference point, and mirroring the line segment B 'by referring to the reflecting surface a to obtain a line segment C'; and 5: moving the seat surface b upwards for a certain distance to obtain an actual audience surface c of the human ear; and 6: the line segment C 'is extended, and the intersection point of the extension line of the line segment C' and the actual audience surface C is a point C; and 7: and drawing a circle by taking the point C as the center of the circle to obtain a circle D, wherein the circle D is the drop point of the actual sound particle.
Description
Technical Field
The invention relates to the technical field of architectural acoustics, in particular to a three-dimensional space-based acoustic particle drop point simulation analysis method.
Background
Building acoustics is the science of studying the acoustical environmental problem in the building, including the sound propagation in the building environment, the evaluation and control of sound, is the component of building physics, is used for controlling indoor tone quality and the noise of building environment to guarantee that indoor has good listening and listening conditions. At present, in the prior art, a planar two-dimensional method is adopted to perform simulation analysis on a sound reflection drop point in a building environment, the drop point of a sound particle cannot be intuitively simulated and predicted by means of hand-drawing analysis or CAD analysis, so that limitation and errors existing in a simulation process are large, and the method is inconvenient to use. In view of this, we propose a three-dimensional space-based acoustic particle landing point simulation analysis method.
Disclosure of Invention
The invention aims to provide a three-dimensional space-based acoustic particle landing point simulation analysis method to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for simulating and analyzing the falling point of an acoustic particle based on a three-dimensional space comprises the following steps:
step 1: picking up a sound source point A, a reflecting surface a and a seat surface b;
step 2: uniformly taking points B on the reflecting surface a;
and step 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 ';
and 4, step 4: taking the point B as a reference point, and mirroring the line segment B 'by referring to the reflecting surface a to obtain a line segment C';
and 5: moving the seat surface b upwards for a certain distance to obtain an actual audience surface c of human ears;
step 6: the line segment C 'is extended, and the intersection point of the extension line of the line segment C' and the actual audience surface C is a point C;
and 7: and drawing a circle by taking the point C as the center of the circle to obtain a circle D, wherein the circle D is the drop point of the actual sound particle.
Preferably, in step 2, the ratio of the number of dots of the dots B to the area of the reflecting surface a is not less than 100 dots per square.
Preferably, in step 5, the distance of the seat surface b moving upwards is not less than 70cm.
Preferably, the sound source point a and the circle D are colored, and the color of the circle D corresponding to the sound source point a is consistent with that of the circle a, so as to visually represent the position of the sound source point a on the actual audience surface c.
Compared with the prior art, the invention has the beneficial effects that: the method for simulating and analyzing the sound particle falling point based on the three-dimensional space comprises the steps of uniformly taking points B on a reflecting surface a, connecting the points B with a sound source point A to obtain a line segment A ', extending the line segment A' to obtain a line segment B ', mirroring the line segment B' to obtain a line segment C ', taking the intersection point of the extension line of the line segment C' and an actual audience surface C as a point C, drawing a circle by taking the point C as a circle center to obtain a falling point circle D of actual sound particles, determining the sound particle falling points at different positions of the whole sound source by picking the points A, and representing the sound particle falling points through different color images, so that the simulation and analysis of the sound particle falling point in the three-dimensional space are completed, the error is small, and the use is convenient.
Drawings
FIG. 1 is a schematic diagram of the operation of the method of the present invention;
FIG. 2 is a flow chart of the method operations of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, a technical solution provided by the present invention is:
a three-dimensional space-based acoustic particle drop point simulation analysis method comprises the following steps:
step 1: picking up a sound source point A, a reflecting surface a and a seat surface b;
step 2: uniformly taking points B on the reflecting surface a;
and step 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 ';
and 4, step 4: taking the point B as a datum point, and mirroring the line segment B 'by referring to the reflecting surface a to obtain a line segment C';
and 5: moving the seat surface b upwards for a certain distance to obtain an actual audience surface c of the human ear;
step 6: the line segment C 'is extended, and the intersection point of the extension line of the line segment C' and the actual audience surface C is a point C;
and 7: and drawing a circle by taking the point C as the center of the circle to obtain a circle D, wherein the circle D is the drop point of the actual sound particle.
In this embodiment, in step 2, the ratio of the number of the points B to the area of the reflecting surface a is not less than 100 points per square, the area of the reflecting surface a is 20 square meters in this embodiment, and the number of the points B is 2000, so that a plurality of points B can be uniformly captured to perform the analysis of the drop point, and the accuracy of the analysis result is improved.
Further, in step 5, the upward moving distance of the seat surface b is not less than 70cm, and the position of the human ear is higher than the height of the seat surface b, so that the position of the actual falling point of the sound particle obtained by the human ear can be obtained in the upward moving process of the seat surface b, so that the analysis result is more accurate, and the upward moving distance of the seat surface b in this embodiment is 1m.
It should be noted that the sound source point a and the circle D are colored, and the color of the sound source point a is consistent with that of the circle D corresponding to the sound source point a, so as to visually represent the position of the sound source point a on the actual audience surface c, which is convenient for observation.
When the sound particle landing point simulation analysis method based on the three-dimensional space is used, the three-dimensional space where a sound source is located is simulated through rhinoceros software, and a sound source point A, a reflecting surface a and a seat surface b are picked up in the three-dimensional space according to actual operation requirements; and uniformly taking a point B on the reflecting surface a, connecting the point B with a sound source point A to obtain a line segment A ', extending the line segment A ' to obtain a line segment B ', taking the point B as a reference point, mirroring the line segment B ' by referring to the reflecting surface a, obtaining a line segment C ' after mirroring, moving the seat surface B upwards for a certain distance to obtain an actual audience surface C of human ears, extending the line segment C ', taking the intersection point of the extension line of the line segment C ' and the actual audience surface C as a point C, drawing a circle by taking the point C as the center of the circle to obtain a circle D, taking the circle D as the falling point of the actual sound particles, coloring the sound source point A and the circle D, and enabling the colors of the sound source point A and the circle D corresponding to be consistent for visually representing the falling point position of the sound source point A on the actual audience surface C, determining the falling point of the sound particles at different positions of the whole sound source by picking up the plurality of points A, and representing the sound particle falling points by different color mirroring, thereby completing the simulation analysis of the falling points of the sound particles in the three-dimensional space, having small errors and being convenient for popularization and promotion.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A three-dimensional space-based acoustic particle drop point simulation analysis method is characterized by comprising the following steps: the method comprises the following steps:
step 1: picking up a sound source point A, a reflecting surface a and a seat surface b;
step 2: uniformly taking points B on the reflecting surface a;
and 3, step 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 ';
and 4, step 4: taking the point B as a reference point, and mirroring the line segment B 'by referring to the reflecting surface a to obtain a line segment C';
and 5: moving the seat surface b upwards for a certain distance to obtain an actual audience surface c of human ears;
step 6: the line segment C 'is extended, and the intersection point of the extension line of the line segment C' and the actual audience surface C is a point C;
and 7: and drawing a circle by taking the point C as the center of the circle to obtain a circle D, wherein the circle D is the drop point of the actual sound particles.
2. The method for the simulation analysis of the landing points of the acoustic particles based on the three-dimensional space according to claim 1, wherein: in step 2, the ratio of the number of the dots B to the area of the reflecting surface a is not less than 100 dots per square.
3. The method for the simulation analysis of the landing points of the acoustic particles based on the three-dimensional space according to claim 1, wherein: in the step 5, the upward moving distance of the seat surface b is not less than 70cm.
4. The method for the three-dimensional space-based acoustic particle landing point simulation analysis according to claim 1, wherein: and coloring the sound source point A and the circle D, wherein the sound source point A and the circle D corresponding to the sound source point A have the same color and are used for visually representing the falling point position of the sound source point A on the actual audience surface c.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103119512A (en) * | 2008-11-02 | 2013-05-22 | 大卫·乔姆 | Near to eye display system and appliance |
| CN107367201A (en) * | 2017-07-04 | 2017-11-21 | 西安瑞联工业智能技术有限公司 | A kind of a wide range of multiple target shell fries drop point sound localization method |
| CN107917750A (en) * | 2016-10-08 | 2018-04-17 | 北京大学 | A kind of MEMS hot types sound particle sensor |
| WO2019189424A1 (en) * | 2018-03-28 | 2019-10-03 | 日本電産株式会社 | Acoustic analysis device and acoustic analysis method |
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2020
- 2020-05-20 CN CN202010429641.4A patent/CN111709178B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103119512A (en) * | 2008-11-02 | 2013-05-22 | 大卫·乔姆 | Near to eye display system and appliance |
| CN107917750A (en) * | 2016-10-08 | 2018-04-17 | 北京大学 | A kind of MEMS hot types sound particle sensor |
| CN107367201A (en) * | 2017-07-04 | 2017-11-21 | 西安瑞联工业智能技术有限公司 | A kind of a wide range of multiple target shell fries drop point sound localization method |
| WO2019189424A1 (en) * | 2018-03-28 | 2019-10-03 | 日本電産株式会社 | Acoustic analysis device and acoustic analysis method |
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