Sound source test support and system

Abstract

The utility model provides a sound source test support and system. The test support comprises a supporting part; and the side edge supporting rod is connected with the supporting part, and at least one microphone sleeve clamping hole is formed in the side edge supporting rod. The test support can meet the sound power measurement requirement of a large sound source, can carry out testing in a non-professional acoustic test laboratory environment, and effectively reduces the transportation cost of the sound source.

Description

Technical Field

[0001] The utility model relates to the technical field of sound power testing, and more specifically to a sound source testing bracket and system. Background Art

[0002] Sound power refers to the sound energy radiated outward per unit time, and the amount of sound energy generated by an object can be represented by sound power.

[0003] In the existing sound power testing system, the sound power testing bracket is applicable to small-sized sound sources and is mainly used for the sound power testing of household appliances, with a size length range of 1-3m, which cannot meet the testing requirements of large sound sources; moreover, the sound power bracket cannot be installed at the sound source site, but needs to be fixed in an anechoic chamber or semi-anechoic chamber. Therefore, the sound source needs to be transported to the anechoic chamber, lifted by a hoisting device, and then the bracket is covered on the sound source, which greatly increases the transportation cost of the sound source. Summary of the Utility Model

[0004] The present utility model is proposed in view of the above problems. The present utility model provides a sound source testing bracket and system, which can meet the sound power measurement requirements of large sound sources and can be tested in a non-professional acoustic testing laboratory environment, effectively reducing the transportation cost of the sound source.

[0005] In a first aspect of the present utility model, a sound source testing bracket is provided, and the sound source testing bracket includes:

[0006] A support part;

[0007] Side support rods, the side support rods are connected to the support part; at least one microphone clamping hole is provided on the side support rods.

[0008] In an embodiment of the present utility model, the number of the side support rods is multiple, and the multiple side support rods are arranged at intervals. Each side support rod has a first end and a second end, and each first end is detachably connected to the support part, and each second end is connected.

[0009] In an embodiment of the present utility model, the testing bracket further includes: a top connector, and the second end of each side support rod is detachably connected to the top connector. In the connected state, the first ends of the multiple side support rods are on the same plane.

[0010] In an embodiment of the present utility model, the side support rod is arc-shaped, and the radius of the arc is greater than or equal to 3 meters.

[0011] In one embodiment of the present utility model, each of the side support rods includes a plurality of first arc-shaped connecting rods, and the plurality of first arc-shaped connecting rods are detachably connected to form the side support rod.

[0012] In one embodiment of the present utility model, the support portion includes at least one bottom connecting member and at least one bottom support rod. The first end of each side support rod is connected to the bottom connecting member, and each bottom connecting member is connected to the bottom support rod.

[0013] In one embodiment of the present utility model, when there are a plurality of bottom support rods, the adjacent bottom support rods are detachably connected through the bottom connecting member.

[0014] In one embodiment of the present utility model, each bottom support rod includes a plurality of second arc-shaped connecting rods, and the plurality of second arc-shaped connecting rods are detachably connected.

[0015] In one embodiment of the present utility model, the sound source test bracket further includes at least one sleeve, the sleeve is disposed on the support portion, and the center line of the sleeve points to the sound source to be tested.

[0016] The second aspect of the present utility model provides a sound source test system, and the test system includes:

[0017] The sound source test bracket according to any one of the above first aspects, at least one microphone, at least one positioning sensor, and the microphone and the positioning sensor are detachably disposed on the sound source test bracket;

[0018] An electronic device, the electronic device is electrically connected to the microphone, and the electronic device is used to obtain test results of the three-dimensional directivity and sound power of the sound source based on the sound pressure signal collected by the microphone.

[0019] In one embodiment of the present utility model, the electronic device includes a signal acquisition circuit and a data processing circuit;

[0020] The signal acquisition circuit is used to acquire the sound pressure signal collected by the microphone, convert the sound pressure signal into a digital signal and output it to the data processing circuit;

[0021] The data processing circuit is used to obtain test results of the three-dimensional directivity and sound power of the sound source based on the digital signal.

[0022] The sound source test bracket of the embodiment of the present utility model can meet the sound power measurement requirements of large sound sources, and can be tested in a non-professional acoustic test laboratory environment, effectively reducing the transportation cost of the sound source. Description of the Drawings

[0023] The embodiments of the present utility model will be described in more detail with reference to the accompanying drawings. The above and other objects, features, and advantages of the present utility model will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings, the same reference numerals generally represent the same components or steps.

[0024] Figure 1 is a schematic structural diagram of a sound source test bracket according to an embodiment of the present utility model;

[0025] Figure 1A is Figure 1 a partial enlarged view of part A in

[0026] Figure 2A is a schematic structural diagram of a test bracket with a radius of 5 meters in an unfolded state according to another embodiment of the present utility model;

[0027] Figure 2B is a schematic structural diagram of a test bracket with a radius of 3 meters in an unfolded state according to another embodiment of the present utility model;

[0028] Figure 3 is a schematic diagram of the storage state of a first arc-shaped connecting rod according to an embodiment of the present utility model;

[0029] Figure 4 is a schematic diagram of the disassembled state of a first arc-shaped connecting rod according to an embodiment of the present utility model;

[0030] Figure 5 is a schematic structural diagram of a sound source test system according to an embodiment of the present utility model;

[0031] Figure 6 is a schematic structural diagram of a data processing circuit according to an embodiment of the present utility model;

[0032] Figure 7 is a schematic structural diagram of a sound source test system according to another embodiment of the present utility model. Detailed Embodiments

[0033] In order to make the objectives, technical solutions, and advantages of the present utility model more apparent, the exemplary embodiments according to the present utility model will be described in detail below with reference to the accompanying drawings. Apparently, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments of the present utility model. It should be understood that the present utility model is not limited by the exemplary embodiments described herein. Based on the embodiments of the present utility model described herein, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present utility model.

[0034] First, refer to Figure 1 and Figure 1A to describe the sound source test bracket according to the embodiments of the present utility model. The sound source test bracket of the present utility model is applicable not only to professional acoustic test laboratories but also to test environments with one or more approximately free fields outdoors. Specifically, it can be applied to the sound source of an energy storage cabinet, and of course, it can also be applied to the scenario of sound source testing. The present utility model does not limit the application scenarios of the sound source test bracket.

[0035] As Figure 1 and Figure 1A shown, the present utility model provides a sound source test bracket. The sound source test bracket 10 includes:

[0036] A support part 12;

[0037] A side support rod 11, the side support rod 11 is connected to the support part 12, and at least one microphone clamping hole 1101 is provided on the side support rod 11.

[0038] In the present utility model, the shape of the side support rod 11 can adopt various shapes, such as an arc shape and an L shape. Specifically, the proportional relationship of the two sides of the L shape should meet the relevant standards for sound power measurement.

[0039] Specifically, Figure 1 the microphone clamping hole 1101 on the side support rod 11 is used to place the microphone 20.

[0040] In the present utility model, the support part 12 is horizontally arranged, and the side support rod 11 is perpendicular to the horizontal plane where the support part 12 is located.

[0041] The sound source test bracket according to the embodiments of the present utility model can meet the sound power measurement requirements of large sound sources and can be tested in a non-professional acoustic test laboratory environment, effectively reducing the transportation cost of the sound source.

[0042] Please continue to refer to Figure 1 , in a specific implementation, three microphone clamping holes 1101 are provided at the preset positions of the side support rod. Here, the preset positions are determined according to the definition in the national standard for sound power testing. The specific positions are not further described and limited in the present utility model.

[0043] The microphone clamping hole 1101 is used to place the microphone 20, so that the sound pressure generated by the sound source at different positions can be measured through the microphone 20.

[0044] Since the bracket is provided with microphone clip holes for placing microphones, there is no need for additional acoustic power microphone site layout, reducing the computational workload and improving work efficiency. Engineering method acoustic tests are generally conducted at night when it is quiet, which is more conducive to improving efficiency.

[0045] Please continue to refer to Figure 1 , in a specific implementation, the sound source test bracket 10 further includes at least one sleeve 14. The sleeve 14 is disposed on the support portion 12, and the center line of the sleeve points to the sound source to be tested. Since the sleeve 14 has a cylindrical cavity inside, the center line of the sleeve is the center line of the cylindrical cavity. Exemplarily, the sleeve can be disposed in the horizontal direction, that is, the center line of the sleeve is parallel to the horizontal plane. The sleeve is used to place a positioning sensor, such as a laser 30. During the test, the accurate position where the sound source to be tested should be placed can be determined by the laser placed in the sleeve, or the position where the test bracket should be placed can be determined when the position of the sound source to be tested has been determined.

[0046] In this embodiment, the laser 30 is used to determine the center point of the sound source, and the laser 30 can be driven by a mobile power source.

[0047] During the measurement process using the test bracket, according to the number of side support rods included in the test bracket, the test bracket can be placed at different positions around the sound source, and the placement direction can be adjusted by the laser. Then, the microphone 20 is placed in the corresponding microphone clip hole 1101 for sound power and directivity measurement.

[0048] In an embodiment of the present invention, the number of side support rods is multiple, and the multiple side support rods are spaced apart. Each side support rod has a first end and a second end, and each first end is detachably connected to the support portion, and each second end is connected.

[0049] In this embodiment, the spacing distance of the side support rods should meet the relevant standards for sound power measurement, and no specific limitation is made in this embodiment.

[0050] In a specific implementation, the test bracket further includes a top connector 13, and each second end is detachably connected to the top connector. In the connected state, the first ends of the multiple side support rods are on the same plane.

[0051] Specifically, when measuring, the first ends of the side support rods are located on the circumference of a circle.

[0052] In a specific implementation, the side support rod is arc-shaped, and the radius of the arc is greater than or equal to 3 meters

[0053] Specifically, the side support rod can be a 1 / 4 arc.

[0054] The side support rod structure in this embodiment has a stable structure and will not deform, and has a large area of contact with the ground, preventing the test bracket from deforming and toppling.

[0055] The sound power test bracket of this embodiment can meet the test requirements of large-sized sound sources, such as the sound source of an energy storage cabinet. Traditional sound power brackets are usually fixed in anechoic chambers and semi-anechoic chambers, equipped with hoisting equipment for lifting, covering the bracket on the sound source; among them, large-sized sound sources have high requirements for the volume of the anechoic chamber and high transportation costs. Through the test bracket of this embodiment, the three-dimensional directivity and sound power tests of large-sized sound sources can be realized directly at the production site.

[0056] In an embodiment of the present utility model, the support part includes at least one bottom connecting piece and at least one bottom support rod. The first end of each side support rod is connected to the bottom connecting piece, and each bottom connecting piece is connected to the bottom support rod.

[0057] In a specific implementation, when there are multiple bottom support rods, the adjacent bottom support rods are detachably connected through the bottom connecting piece, so that the storage volume of the bracket can be reduced when the bracket is not in use.

[0058] In a specific implementation, each bottom support rod may include a plurality of second arc connecting rods, and the plurality of second arc connecting rods are detachably connected. Specifically, the support part 12 may include 6 bottom support rods, and each bottom support rod is 1 / 6 arc-shaped.

[0059] Exemplarily, each bottom support rod may include 4 second arc connecting rods with a 1 / 24 circular arc, so that each bottom support rod forms a 1 / 6 circular arc, and each 1 / 24 circular arc second arc connecting rod is positioned by a buckle to keep the bracket fixed.

[0060] When the bottom support rod is disassembled, the arcs of the 4 second arc connecting rods with a 1 / 24 circular arc of each bottom support rod are the same, and they can be uniformly stored. After disassembly, the buckle is locked.

[0061] Next, refer to Figure 2A and Figure 2B to describe the sound source test bracket according to an embodiment of the present utility model.

[0062] In this embodiment, the sound source test support bracket 10 includes six side support rods, namely the first side support rod 111, the second side support rod 112, the third side support rod 113, the fourth side support rod 114, the fifth side support rod 115, and the sixth side support rod 116, and further includes a support portion 12. The support portion 12 includes six bottom connectors and six bottom support rods. The first end of each side support rod is connected to the bottom connector, and each bottom connector is connected to the bottom support rod. A sleeve is provided on each bottom support rod. When the bottom support rod is arc-shaped, the center line of the sleeve is in the horizontal direction and points to the direction of the arc center. The six sleeves are the first sleeve 141, the second sleeve 142, the third sleeve 143, the fourth sleeve 144, the fifth sleeve 145, and the sixth sleeve 146.

[0063] Specifically, the radius of the support portion 12 is equal to 5 meters. As Figure 2A shown, at this time, the test support bracket is applicable to the measurement of larger vehicles.

[0064] Specifically, the radius of the support portion 12 can also be equal to 3 meters. As Figure 2B shown, at this time, the test support bracket 10 is applicable to the measurement of smaller vehicles.

[0065] In this embodiment, the sound source test support bracket 10 further includes a top connector 13. Specifically, the top connector 13 is a positioning hexagonal interface. The positioning hexagonal interface has six interfaces evenly distributed on the circumference for detachably connecting to the first side support rod 111, the second side support rod 112, the third side support rod 113, the fourth side support rod 114, the fifth side support rod 115, and the sixth side support rod 116 respectively.

[0066] In a specific implementation, each side support rod includes a plurality of first arc-shaped connecting rods, and the plurality of first arc-shaped connecting rods are detachably connected to form the side support rod.

[0067] Specifically, as Figure 2A shown, the side support rod is composed of six 1 / 24 circular arc-shaped first arc-shaped connecting rods, so that each side support rod forms a 1 / 4 circular arc, and each 1 / 24 circular arc-shaped first arc-shaped connecting rod is positioned by a buckle to keep the support bracket fixed.

[0068] Figure 3 is a schematic diagram of the storage state of the first arc-shaped connecting rod according to an embodiment of the present invention. As Figure 3 shown, the side support rod 11 is composed of six 1 / 24 circular arc-shaped first arc-shaped connecting rods 1111. The arcs of the six 1 / 24 circular arc-shaped first arc-shaped connecting rods 1111 are the same and can be stored uniformly. After disassembly, the buckle is locked.

[0069] The length of each 1 / 24 arc bracket is approximately 1.3 m, which can be placed in a side shoulder bag for easy carrying and transportation.

[0070] Next, refer to Figure 4 to describe the sound source test bracket according to the embodiment of the present invention.

[0071] In this embodiment, the side support rods include a first side support rod 111, a second side support rod 112, a third side support rod 113, a fourth side support rod 114, a fifth side support rod 115, and a sixth side support rod 116. The support part is composed of a first bottom support rod 121, a second bottom support rod 122, a third bottom support rod 123, a fourth bottom support rod 124, a fifth bottom support rod 125, and a sixth bottom support rod 126. The test bracket of this embodiment further includes a first bottom connector 151, a second bottom connector 152, a third bottom connector 153, a fourth bottom connector 154, a fifth bottom connector 155, and a sixth bottom connector 156. Adjacent bottom support rods are detachably connected through bottom connectors. The connection between the bottom of the side support rod and the bottom connector is detachable, and the top of each side support rod is detachably connected to the top connector.

[0072] Figure 4 The disassembled test bracket is shown in

[0073] The test bracket of the present invention is conducive to assembly and carrying. Through detachable connections, the occupied area is reduced, it can be quickly stored, and it is conducive to handling and long-distance transportation. It can be directly carried by people and supported by various means of transportation such as airplanes and trains.

[0074] The embodiment of the present invention also provides a sound source test system, which includes:

[0075] The sound source test bracket according to any one of the above first aspects, at least one microphone, at least one positioning sensor, and the microphone and the positioning sensor are detachably arranged on the sound source test bracket;

[0076] An electronic device, which is electrically connected to the microphone, and the electronic device is used to obtain the test results of the three-dimensional directivity and sound power of the sound source based on the sound pressure signal collected by the microphone.

[0077] Here, the positioning sensor is used to position the test bracket, so as to position the microphone.

[0078] By arranging the microphone on the sound source test bracket and electrically connecting the electronic device to the microphone, the multi-functional measurement of the three-dimensional directivity and sound power of the sound source can be realized, and it is convenient to carry and transport.

[0079] Next, refer to Figure 5 to describe the sound source testing system according to an embodiment of the present utility model.

[0080] As Figure 5 shown, in an embodiment of the present utility model, the testing system 500 includes a sound source testing bracket (not shown in the figure), a positioning sensor (not shown in the figure), a microphone 510, a signal acquisition circuit 520, and a data processing circuit 530. The signal acquisition circuit 520 is electrically connected to the data processing circuit 530 and the microphone 510 respectively;

[0081] The signal acquisition circuit 520 is configured to acquire the sound pressure signal collected by the microphone, convert the sound pressure signal into a digital signal, and output it to the data processing circuit;

[0082] The data processing circuit 530 is configured to obtain the test results of the three-dimensional directivity and sound power of the sound source based on the digital signal.

[0083] Figure 6 is a schematic structural diagram of the data processing circuit 530 according to an embodiment of the present utility model. As Figure 6 shown, the data processing circuit 530 includes a processor 531, a memory 532, and a communication interface 533. Among them, the processor 531, the memory 532, and the communication interface 533 can be interconnected and communicate through a communication bus 534 and / or other forms of connection mechanisms (not shown).

[0084] It should be noted that Figure 6 the components and structures of the electronic device data processing circuit 530 shown are only exemplary and not restrictive. According to needs, the data processing circuit 530 may also have other components and structures.

[0085] Optionally, the communication interface 533 may further include a transmitter and / or a receiver.

[0086] The processor 531 may be a microcontroller unit (MCU), a central processing unit (CPU), a digital signal processor (DSP), a single-chip microcomputer, and an embedded device, or other forms of processing units with data processing capabilities and / or instruction execution capabilities.

[0087] The memory 532 can be various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. Volatile memory can include, for example, random access memory (RAM), cache memory, synchronous dynamic random access memory (SDRAM), etc. Non-volatile memory can include, for example, read-only memory (ROM), hard disk, flash memory, etc.

[0088] It should be noted that the program stored in the processor 531 for implementing the test results of obtaining the three-dimensional directivity and sound power of the sound source based on digital signals, as well as the interaction instructions between the processor 531 and the peripheral devices under the control of this program, are implemented through existing programs and instructions, which belong to the prior art and have nothing to do with the structural improvements made by the present utility model.

[0089] Taking the sound power test of a vehicle as the sound source as an example, the test system of the present utility model will be described below. In this embodiment, the electronic device is a computer, and an interface is set in the computer, into which a sound power test card can be inserted. The sound power test card is used to process the measured digital signals to obtain the measurement results.

[0090] When using the measurement system for testing, first unfold and set up the sound power test bracket so that the sound power test bracket completely covers the vehicle. Figure 7 It is a sound source test system according to another embodiment of the present utility model. As Figure 7 shown, the test system 700 includes a sound source test bracket 710, a positioning sensor (not shown in the figure), a microphone (not shown in the figure), a signal acquisition device 720, and a computer 730. During the unfolding process, the microphones are arranged on the sound power test bracket 710 to form a hemispherical microphone array; the microphone array is connected to the signal acquisition device 720 through a coaxial cable, and the microphones are numbered; the signal acquisition device 720 is connected to the computer 730 through a USB cable; after turning on the power, insert the sound power test card into the computer 730 for preparation of testing.

[0091] Start the vehicle and let it run stably for a period of time; during the operation of the device, adjust the sound pressure signal range; after adjusting the range, start collecting signals for sound power and three-dimensional directivity testing; finally, obtain the sound pressure data for storage, and wait to use the post-processing software of the test system data for data analysis.

[0092] During testing, according to the actual situation at the testing site, there are several measurement methods for sound pressure level, including hemisphere, 1 / 2 hemisphere, and 1 / 4 hemisphere. Correspondingly, 1 or more sound source test brackets are used to install microphones for measurement. When using 1 sound source test bracket, measurement can be carried out by changing the position of the bracket multiple times; then, the average value of the microphone array is obtained and substituted into the sound power and directivity formulas to obtain sound power data and directivity test results.

[0093] Although example embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above example embodiments are merely exemplary and are not intended to limit the scope of the present invention thereto. Those of ordinary skill in the art can make various changes and modifications therein without departing from the scope and spirit of the present invention. All such changes and modifications are intended to be included within the scope of the present invention as claimed in the appended claims.

[0094] In the specification provided herein, a large number of specific details are set forth. However, it can be understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and technologies have not been shown in detail so as not to obscure the understanding of this specification.

[0095] Similarly, it should be understood that, in order to streamline the present invention and assist in understanding one or more of the various inventive aspects, in the description of the exemplary embodiments of the present invention, the various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, the method of the present invention should not be construed as reflecting an intention that the claimed present invention requires more features than are expressly recited in each claim. Rather, as reflected by the corresponding claims, the inventive point lies in that the corresponding technical problems can be solved with features fewer than all the features of a single disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into the detailed description, where each claim itself serves as a separate embodiment of the present invention.

[0096] Those skilled in the art can understand that, except for features that are mutually exclusive, any combination can be adopted for all the features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all the processes or units of any method or device so disclosed. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) can be replaced by an alternative feature that provides the same, equivalent, or similar purpose.

[0097] In addition, those skilled in the art can understand that although some embodiments described herein include certain features included in other embodiments rather than other features, the combination of features of different embodiments means that it is within the scope of the present utility model and forms different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0098] It should be noted that the above embodiments illustrate the present utility model rather than limit the present utility model, and those skilled in the art can design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in the claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present utility model can be implemented by means of hardware including several different elements and by means of a suitably programmed computer. In the unit claims listing several devices, several of these devices can be embodied by the same item of hardware. The use of the words first, second, and third, etc. does not denote any order. These words can be interpreted as names.

[0099] As described above, it is only the specific implementation manner or the description of the specific implementation manner of the present utility model, and the protection scope of the present utility model is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present utility model, and all of them should be covered by the protection scope of the present utility model. The protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A sound source test bracket, characterized in that The sound source test bracket includes: A support part; Side support rods, the side support rods are connected to the support part; at least one microphone clamping hole is provided on the side support rods; The sound source test bracket further includes at least one sleeve, the sleeve is arranged on the support part, the center line of the sleeve points to the sound source to be tested, and the sleeve is used for placing a positioning sensor.

2. The sound source test bracket according to claim 1, wherein, The number of the side support rods is multiple, and the multiple side support rods are arranged at intervals. Each side support rod has a first end and a second end, and each first end is detachably connected to the support part, and each second end is connected.

3. The sound source test bracket according to claim 2, wherein The test bracket further includes a top connecting part, and the second end of each side support rod is detachably connected to the top connecting part. In the connected state, the first ends of the multiple side support rods are on the same plane.

4. The sound source test bracket according to claim 2, characterized in that, The side support rod is arc-shaped, and the radius of the arc is greater than or equal to 3 meters.

5. The sound source test support according to claim 4, wherein Each side support rod includes a plurality of first arc-shaped connecting rods, and the plurality of first arc-shaped connecting rods are detachably connected to form the side support rod.

6. The sound source test support according to claim 1, wherein, The support part includes at least one bottom connecting part and at least one bottom support rod. The first end of each side support rod is connected to the bottom connecting part, and each bottom connecting part is connected to the bottom support rod.

7. The sound source test bracket according to claim 6, characterized in that, When the number of the bottom support rods is multiple, the adjacent bottom support rods are detachably connected through the bottom connecting part.

8. The sound source test bracket according to claim 7, wherein Each bottom support rod includes a plurality of second arc-shaped connecting rods, and the plurality of second arc-shaped connecting rods are detachably connected.

9. A sound source testing system, characterized in that, The test system includes: The sound source test bracket according to any one of claims 1-8, at least one microphone, at least one positioning sensor, and the microphone and the positioning sensor are detachably arranged on the sound source test bracket; An electronic device, the electronic device is electrically connected to the microphone, and the electronic device is used to obtain the test results of the three-dimensional directivity and sound power of the sound source based on the sound pressure signal collected by the microphone.

10. The sound source test system according to claim 9, characterized in that, The electronic device includes a signal acquisition circuit and a data processing circuit; The signal acquisition circuit is used to acquire the sound pressure signal collected by the microphone, convert the sound pressure signal into a digital signal and output it to the data processing circuit; The data processing circuit is used to obtain the test results of the three-dimensional directivity and sound power of the sound source based on the digital signal.

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