CN116506775B - Distributed loudspeaker array arrangement point selection and optimization method and system - Google Patents
Distributed loudspeaker array arrangement point selection and optimization method and system Download PDFInfo
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- CN116506775B CN116506775B CN202310573407.2A CN202310573407A CN116506775B CN 116506775 B CN116506775 B CN 116506775B CN 202310573407 A CN202310573407 A CN 202310573407A CN 116506775 B CN116506775 B CN 116506775B
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- 238000000034 method Methods 0.000 title claims abstract description 29
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- 239000013598 vector Substances 0.000 claims abstract description 45
- 239000011159 matrix material Substances 0.000 claims abstract description 29
- 238000010276 construction Methods 0.000 claims abstract description 19
- 238000004364 calculation method Methods 0.000 claims description 8
- 238000003491 array Methods 0.000 claims description 6
- 238000012163 sequencing technique Methods 0.000 claims description 3
- 230000005669 field effect Effects 0.000 abstract description 4
- 230000006870 function Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 238000004590 computer program Methods 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000004422 calculation algorithm Methods 0.000 description 1
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- 238000004088 simulation Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
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- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
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- Circuit For Audible Band Transducer (AREA)
- Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
Abstract
The embodiment of the application provides a distributed loudspeaker array arrangement point selection and optimization method and system, belonging to the technical field of sound field control, wherein the method comprises the following steps: acquiring initial position distribution of a distributed loudspeaker array; carrying out electroacoustic function construction on N loudspeakers contained in the distributed loudspeaker array to form N electroacoustic vectors, wherein the electroacoustic vectors contain position information and power information of the loudspeakers; constructing an electroacoustic matrix containing N electroacoustic vectors according to the distribution of N loudspeakers in the acoustic field area; and determining a sound field energy contour line formed by the distributed loudspeaker array in the sound field area based on the sound field energy, so as to optimize distributed loudspeaker array arrangement points based on a curvature variable grabbing value of the contour line. By adopting the scheme, the sound field effect of the distributed loudspeaker array can be dynamically adjusted, and the sound field effect of the distributed loudspeaker array is improved.
Description
Technical Field
The application relates to the technical field of sound field control, in particular to a distributed loudspeaker array arrangement point selection and optimization method.
Background
Distributed loudspeaker arrays are used as a new sound setting method in more and more scenes. However, due to the difference of the actual sound fields, different forms of sound scheme matching are required on different sound fields, and particularly, reverberation and other phenomena occur on fields with noise, building reflection and other influences.
For places with high sound quality requirements, a loudspeaker array is generally required to control a sound field, and a large amount of calculation and debugging are required to be performed on the loudspeaker array during installation, so that rapid optimization is required for distributed loudspeaker array arrangement points, and the requirements of users are met.
Disclosure of Invention
In view of this, embodiments of the present application provide a distributed loudspeaker array arrangement point selection and optimization method, which at least partially solves the problems existing in the prior art.
In a first aspect, an embodiment of the present application provides a method for selecting and optimizing a distributed loudspeaker array placement point, including:
acquiring initial position distribution of a distributed loudspeaker array so as to determine a sound field area facing the distributed loudspeaker array based on the initial position distribution;
carrying out electroacoustic function construction on N loudspeakers contained in the distributed loudspeaker array to form N electroacoustic vectors, wherein the electroacoustic vectors contain position information and power information of the loudspeakers;
according to the distribution of N loudspeakers in the sound field area, constructing an electroacoustic matrix containing N electroacoustic vectors, wherein the electroacoustic matrix is used for describing sound field energy formed by the distributed loudspeaker array in the sound field area;
and determining a sound field energy contour line formed by the distributed loudspeaker array in the sound field area based on the sound field energy, so as to optimize distributed loudspeaker array arrangement points based on curvature change values of the contour line.
According to a specific implementation manner of an embodiment of the present disclosure, the obtaining an initial position distribution of the distributed loudspeaker array includes:
and constructing a plane rectangular coordinate system, and determining the plane coordinates of the plurality of distributed loudspeaker arrays based on the plane rectangular coordinate system.
According to a specific implementation manner of the embodiment of the present disclosure, the obtaining the initial position distribution of the distributed loudspeaker array further includes:
and acquiring the vertical sound orientation of the distributed loudspeaker array, and taking the vertical sound orientation as one of characteristic values of initial position distribution.
According to a specific implementation manner of the embodiment of the present disclosure, the electroacoustic function construction for N speakers included in the distributed loudspeaker array includes:
acquiring the transmitting power, position coordinates and vertical sound orientation of a loudspeaker in a distributed loudspeaker array;
sound distribution of the speaker in the acoustic field region is determined based on the emission power of the speaker, the position coordinates, and the vertical sound orientation.
According to a specific implementation manner of the embodiment of the present disclosure, after the electroacoustic function construction is performed on N speakers included in the distributed loudspeaker array, the method further includes:
electroacoustic vectors are formed based on the position information and the power information of the speakers.
According to a specific implementation manner of the embodiment of the present disclosure, the constructing an electroacoustic matrix including N electroacoustic vectors according to the distribution of N speakers in the acoustic field region includes:
and sequencing electroacoustic vectors according to the arrangement sequence of the loudspeakers in the sound field region to form the electroacoustic matrix.
According to a specific implementation manner of the embodiment of the present disclosure, the constructing an electroacoustic matrix including N electroacoustic vectors according to the distribution of N speakers in the acoustic field region further includes:
and calculating eigenvalues of the electroacoustic matrix so as to acquire the characteristics of the distributed loudspeaker array based on the eigenvalues.
According to a specific implementation manner of the embodiment of the present disclosure, the determining, based on the sound field energy, a sound field energy contour line formed by the distributed loudspeaker array in the sound field area includes:
clustering calculation is carried out on sound field energy of the distributed loudspeaker array in a sound field area to form a clustering edge line;
and performing equivalent connection on the clustering edge lines to form acoustic field energy contour lines.
According to a specific implementation manner of the embodiment of the present disclosure, the optimizing the distributed loudspeaker array arrangement point based on the curvature change value of the contour line includes:
obtaining curvature change points of the contour lines so as to calculate curvature values of the curvature change points;
judging whether the curvature value is larger than a preset value or not;
if yes, the position and the azimuth of the loudspeaker array corresponding to the curvature point larger than the preset value are adjusted.
In a second aspect, an embodiment of the present application further provides a distributed loudspeaker array placement point selection and optimization system, including:
the acquisition module is used for acquiring initial position distribution of the distributed loudspeaker array so as to determine a sound field area facing the distributed loudspeaker array based on the initial position distribution;
the construction module is used for carrying out electroacoustic function construction on N loudspeakers contained in the distributed loudspeaker array to form N electroacoustic vectors, wherein the electroacoustic vectors contain position information and power information of the loudspeakers;
the construction module is used for constructing an electroacoustic matrix containing N electroacoustic vectors according to the distribution of N loudspeakers in the sound field area, and the electroacoustic matrix is used for describing sound field energy formed by the distributed loudspeaker array in the sound field area;
and the determining module is used for determining a sound field energy contour line formed by the distributed loudspeaker array in the sound field area based on the sound field energy so as to optimize distributed loudspeaker array arrangement points based on curvature change values of the contour line.
In a third aspect, an embodiment of the present application further provides an electronic device, including:
at least one processor; the method comprises the steps of,
a memory communicatively coupled to the at least one processor; wherein, the liquid crystal display device comprises a liquid crystal display device,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the distributed loudspeaker array placement point selection and optimization method of any one of the foregoing Ren Di or first aspect implementations.
In a fourth aspect, embodiments of the present application further provide a non-transitory computer readable storage medium storing computer instructions for causing the computer to perform the distributed loudspeaker array placement point selection and optimization method of the first aspect or any implementation manner of the first aspect.
In a fifth aspect, embodiments of the present application also provide a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, cause the computer to perform the distributed loudspeaker array placement point selection and optimization method of the first aspect or any implementation of the first aspect.
The method for selecting and optimizing the distributed loudspeaker array arrangement points provided by the embodiment of the application comprises the following steps: acquiring initial position distribution of a distributed loudspeaker array so as to determine a sound field area facing the distributed loudspeaker array based on the initial position distribution; carrying out electroacoustic function construction on N loudspeakers contained in the distributed loudspeaker array to form N electroacoustic vectors, wherein the electroacoustic vectors contain position information and power information of the loudspeakers; according to the distribution of N loudspeakers in the sound field area, constructing an electroacoustic matrix containing N electroacoustic vectors, wherein the electroacoustic matrix is used for describing sound field energy formed by the distributed loudspeaker array in the sound field area; and determining a sound field energy contour line formed by the distributed loudspeaker array in the sound field area based on the sound field energy, so as to optimize distributed loudspeaker array arrangement points based on curvature change values of the contour line. By the scheme of the application, the sound field effect of the distributed loudspeaker array can be dynamically adjusted, and the sound field effect of the distributed loudspeaker array is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a distributed loudspeaker array arrangement point selection and optimization method according to an embodiment of the present application;
FIG. 2 is a schematic diagram of another method for selecting and optimizing distributed loudspeaker array placement points according to an embodiment of the present application;
FIG. 3 is a schematic diagram of another method for selecting and optimizing distributed loudspeaker array placement points according to an embodiment of the present application;
fig. 4 is a schematic diagram of a distributed loudspeaker array arrangement point selection and optimization system according to an embodiment of the present application.
Detailed Description
Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1, fig. 2 and fig. 3, an embodiment of the present application provides a distributed loudspeaker array arrangement point selecting and optimizing method, including:
s101, acquiring initial position distribution of the distributed loudspeaker array so as to determine a sound field area facing the distributed loudspeaker array based on the initial position distribution.
The distributed loudspeaker arrays can be arranged in various ways at the place where the sound is played, for this purpose, a rectangular coordinate system can be established at the place where the sound is played, and the plane coordinates of the distributed loudspeaker arrays are determined by the plane rectangular coordinate system.
In addition to the placement position, the orientation of the loudspeakers in the array is also an important factor affecting the sound distribution, for which purpose the vertical sound orientation of the distributed loudspeaker array can be further obtained, which is taken as one of the characteristic values of the initial position distribution.
By acquiring the above information, the sound field area facing the distributed loudspeaker array, which is the main area where the user listens to the sound signal, can be calculated.
S102, electroacoustic function construction is carried out on N loudspeakers contained in the distributed loudspeaker array to form N electroacoustic vectors, and the electroacoustic vectors contain position information and power information of the loudspeakers.
Different loudspeakers have different sound playing power so as to influence the playing effect of the loudspeakers, therefore, the transmitting power, the position coordinates and the vertical sound orientation of the loudspeakers in the distributed loudspeaker array can be obtained, and the sound distribution of the loudspeakers in the sound field area is determined based on the transmitting power, the position coordinates and the vertical sound orientation of the loudspeakers.
Electroacoustic vectors are formed based on the position information and the power information of the speakers.
As an example, electroacoustic vector pt may be calculated by the following formula:
wherein r is m The distance from the center point of the loudspeaker array to the control point of the mth target area is the average value of the coordinates of the L loudspeaker units; k is the wave number, k=2pi f/c0, c0 is the speed of sound in air.
S103, constructing an electroacoustic matrix containing N electroacoustic vectors according to the distribution of N loudspeakers in the sound field area, wherein the electroacoustic matrix is used for describing sound field energy formed by the distributed loudspeaker array in the sound field area.
The electroacoustic vectors may be ordered according to the order of arrangement of the loudspeakers in the sound field region to form the electroacoustic matrix.
In addition, the electroacoustic matrix can be subjected to eigenvalue calculation so as to acquire the characteristics of the distributed loudspeaker array based on the eigenvalues.
And S104, determining a sound field energy contour line formed by the distributed loudspeaker array in the sound field area based on the sound field energy so as to optimize distributed loudspeaker array arrangement points based on curvature change values of the contour line.
And calculating the sound energy of the constructed distributed loudspeaker array through a preset sound simulation model, so as to obtain the sound energy distribution of the loudspeaker array in the sound field area.
Clustering calculation is carried out on sound field energy of the distributed loudspeaker array in a sound field area to form a clustering edge line; and performing equivalent connection on the clustering edge lines to form acoustic field energy contour lines.
In the process of the clustering algorithm, for a data set X containing n speaker vectors, euclidean distance is selected as a similarity index, and similarity values among the n speaker vectors are calculated through the Euclidean distance. The clustering objective is to minimize the sum of squares of clusters of the classes, i.e., minimize J:
euclidean distance calculation formula:
wherein u is i ，u k Is any 2 vectors in the data set X of the loudspeaker vector, X d Represents the value of the d element of the vector x, z d The d-th element value of the vector z is represented.
After the contour line is obtained, curvature change points of the contour line can be further calculated so as to calculate curvature values of the curvature change points; judging whether the curvature value is larger than a preset value or not; if yes, the position and the azimuth of the loudspeaker array corresponding to the curvature point larger than the preset value are adjusted. In this way, the point with a larger curvature value can be selected, and the phenomenon that the sound in the sound field is too harsh caused by the point with the larger curvature value is avoided by adjusting the curvature value of the point with the larger curvature value. So that the sound energy distribution in the whole sound field is relatively uniform.
According to a specific implementation manner of an embodiment of the present disclosure, the obtaining an initial position distribution of the distributed loudspeaker array includes:
and constructing a plane rectangular coordinate system, and determining the plane coordinates of the plurality of distributed loudspeaker arrays based on the plane rectangular coordinate system.
According to a specific implementation manner of the embodiment of the present disclosure, the obtaining the initial position distribution of the distributed loudspeaker array further includes:
and acquiring the vertical sound orientation of the distributed loudspeaker array, and taking the vertical sound orientation as one of characteristic values of initial position distribution.
According to a specific implementation manner of the embodiment of the present disclosure, the electroacoustic function construction for N speakers included in the distributed loudspeaker array includes:
acquiring the transmitting power, position coordinates and vertical sound orientation of a loudspeaker in a distributed loudspeaker array;
sound distribution of the speaker in the acoustic field region is determined based on the emission power of the speaker, the position coordinates, and the vertical sound orientation.
According to a specific implementation manner of the embodiment of the present disclosure, after the electroacoustic function construction is performed on N speakers included in the distributed loudspeaker array, the method further includes:
electroacoustic vectors are formed based on the position information and the power information of the speakers.
According to a specific implementation manner of the embodiment of the present disclosure, the constructing an electroacoustic matrix including N electroacoustic vectors according to the distribution of N speakers in the acoustic field region includes:
and sequencing electroacoustic vectors according to the arrangement sequence of the loudspeakers in the sound field region to form the electroacoustic matrix.
According to a specific implementation manner of the embodiment of the present disclosure, the constructing an electroacoustic matrix including N electroacoustic vectors according to the distribution of N speakers in the acoustic field region further includes:
and calculating eigenvalues of the electroacoustic matrix so as to acquire the characteristics of the distributed loudspeaker array based on the eigenvalues.
According to a specific implementation manner of the embodiment of the present disclosure, the determining, based on the sound field energy, a sound field energy contour line formed by the distributed loudspeaker array in the sound field area includes:
clustering calculation is carried out on sound field energy of the distributed loudspeaker array in a sound field area to form a clustering edge line;
and performing equivalent connection on the clustering edge lines to form acoustic field energy contour lines.
According to a specific implementation manner of the embodiment of the present disclosure, the optimizing the distributed loudspeaker array arrangement point based on the curvature change value of the contour line includes:
obtaining curvature change points of the contour lines so as to calculate curvature values of the curvature change points;
judging whether the curvature value is larger than a preset value or not;
if yes, the position and the azimuth of the loudspeaker array corresponding to the curvature point larger than the preset value are adjusted.
Referring to fig. 4, an embodiment of the present application provides a distributed loudspeaker array placement point selection and optimization system 40 comprising:
an obtaining module 401, configured to obtain an initial position distribution of the distributed loudspeaker array, so as to determine a sound field area faced by the distributed loudspeaker array based on the initial position distribution;
a construction module 402, configured to construct electroacoustic functions for N speakers included in the distributed loudspeaker array, to form N electroacoustic vectors, where the electroacoustic vectors include location information and power information of the speakers;
a construction module 403, configured to construct an electroacoustic matrix including N electroacoustic vectors according to the distribution of N speakers in the sound field region, where the electroacoustic matrix is used to describe sound field energy formed by the distributed loudspeaker array in the sound field region;
a determining module 404, configured to determine a contour of sound field energy formed by the distributed loudspeaker array in the sound field area based on the sound field energy, so as to optimize distributed loudspeaker array arrangement points based on a curvature variation value of the contour.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present application should be included in the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.
Claims (9)
1. A distributed loudspeaker array placement point selection and optimization method, comprising:
acquiring initial position distribution of a distributed loudspeaker array so as to determine a sound field area facing the distributed loudspeaker array based on the initial position distribution;
carrying out electroacoustic function construction on N loudspeakers contained in the distributed loudspeaker array to form N electroacoustic vectors, wherein the electroacoustic vectors contain position information and power information of the loudspeakers;
according to the distribution of N loudspeakers in the sound field area, constructing an electroacoustic matrix containing N electroacoustic vectors, wherein the electroacoustic matrix is used for describing sound field energy formed by the distributed loudspeaker array in the sound field area;
determining a sound field energy contour line formed by the distributed loudspeaker array in the sound field region based on the sound field energy so as to optimize distributed loudspeaker array arrangement points based on curvature variation values of the contour line, including: clustering calculation is carried out on sound field energy of the distributed loudspeaker array in a sound field area to form a clustering edge line; and performing equivalent connection on the clustering edge lines to form acoustic field energy contour lines.
2. The method of claim 1, wherein the obtaining an initial position profile of the distributed loudspeaker array comprises:
and constructing a plane rectangular coordinate system, and determining the plane coordinates of the plurality of distributed loudspeaker arrays based on the plane rectangular coordinate system.
3. The method of claim 2, wherein the obtaining an initial position profile of the distributed loudspeaker array further comprises:
and acquiring the vertical sound orientation of the distributed loudspeaker array, and taking the vertical sound orientation as one of characteristic values of initial position distribution.
4. A method according to claim 3, wherein said electroacoustic function construction of N loudspeakers included in said distributed loudspeaker array comprises:
acquiring the transmitting power, position coordinates and vertical sound orientation of a loudspeaker in a distributed loudspeaker array;
sound distribution of the speaker in the acoustic field region is determined based on the emission power of the speaker, the position coordinates, and the vertical sound orientation.
5. The method of claim 4, wherein after electroacoustic function construction of N speakers included in the distributed mode loudspeaker array, the method further comprises:
electroacoustic vectors are formed based on the position information and the power information of the speakers.
6. The method of claim 5, wherein constructing an electroacoustic matrix comprising N electroacoustic vectors according to the distribution of the N loudspeakers in the acoustic field region comprises:
and sequencing electroacoustic vectors according to the arrangement sequence of the loudspeakers in the sound field region to form the electroacoustic matrix.
7. The method of claim 6, wherein said constructing an electroacoustic matrix comprising N electroacoustic vectors according to a distribution of N loudspeakers in said acoustic field region, further comprises:
and calculating eigenvalues of the electroacoustic matrix so as to acquire the characteristics of the distributed loudspeaker array based on the eigenvalues.
8. The method of claim 1, wherein optimizing distributed loudspeaker array placement points based on curvature change values of the contours comprises:
obtaining curvature change points of the contour lines so as to calculate curvature values of the curvature change points;
judging whether the curvature value is larger than a preset value or not;
if yes, the position and the azimuth of the loudspeaker array corresponding to the curvature point larger than the preset value are adjusted.
9. A distributed loudspeaker array placement point selection and optimization system, comprising:
the acquisition module is used for acquiring initial position distribution of the distributed loudspeaker array so as to determine a sound field area facing the distributed loudspeaker array based on the initial position distribution;
the construction module is used for carrying out electroacoustic function construction on N loudspeakers contained in the distributed loudspeaker array to form N electroacoustic vectors, wherein the electroacoustic vectors contain position information and power information of the loudspeakers;
the construction module is used for constructing an electroacoustic matrix containing N electroacoustic vectors according to the distribution of N loudspeakers in the sound field area, and the electroacoustic matrix is used for describing sound field energy formed by the distributed loudspeaker array in the sound field area;
a determining module, configured to determine, based on the sound field energy, a sound field energy contour line formed by the distributed loudspeaker array in the sound field area, so as to optimize distributed loudspeaker array arrangement points based on a curvature variation value of the contour line, where the determining module includes: clustering calculation is carried out on sound field energy of the distributed loudspeaker array in a sound field area to form a clustering edge line; and performing equivalent connection on the clustering edge lines to form acoustic field energy contour lines.
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| US10535361B2 (en) * | 2017-10-19 | 2020-01-14 | Kardome Technology Ltd. | Speech enhancement using clustering of cues |
| US10694285B2 (en) * | 2018-06-25 | 2020-06-23 | Biamp Systems, LLC | Microphone array with automated adaptive beam tracking |
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| CN111314821A (en) * | 2018-12-12 | 2020-06-19 | 深圳市冠旭电子股份有限公司 | Intelligent sound box playing method and device and intelligent sound box |
| CN109902190A (en) * | 2019-03-04 | 2019-06-18 | 京东方科技集团股份有限公司 | Image encrypting algorithm optimization method, search method, device, system and medium |
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| CN115358143A (en) * | 2022-08-05 | 2022-11-18 | 复旦大学 | Method, system, equipment and storage medium for constructing three-dimensional sound field with high precision |
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