CN113068109B - Horn testing mechanism - Google Patents
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- CN113068109B CN113068109B CN202110329830.9A CN202110329830A CN113068109B CN 113068109 B CN113068109 B CN 113068109B CN 202110329830 A CN202110329830 A CN 202110329830A CN 113068109 B CN113068109 B CN 113068109B
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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
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
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Abstract
The invention discloses a loudspeaker testing mechanism which comprises a jig, a sounding module and a first sound testing module, wherein the jig is used for testing the sounding module; the jig is used for mounting the loudspeaker; the sounding module is arranged on one side of the jig, and at least part of sound emitted by the sounding module enters the sound short-path channel; the first sound testing module is communicated with the sound short-circuit channel and used for picking up sound signals generated by the sound generating module after the sound penetrates through the sound short-circuit channel and testing the sound signals. According to the technical scheme, the loudspeaker testing mechanism tests the acoustic performance of the acoustic short-circuit channel by means of acoustic detection, and compared with the existing mode of testing the acoustic performance of the acoustic short-circuit channel by detecting the light transmittance, the testing mode of the embodiment can reflect the acoustic performance of the acoustic short-circuit channel more intuitively, and the detection accuracy of the acoustic performance of the acoustic short-circuit channel is improved.
Description
Technical Field
The invention relates to the technical field of acoustic testing, in particular to a loudspeaker testing mechanism.
Background
In the earphone, the earphone structure keeps apart the earphone inside and external environment and forms an independent cavity, and loudspeaker are sealed with the earphone structure in the cavity, separate earphone internal cavity for antechamber and back chamber, through setting up the sound short circuit hole in order to communicate antechamber and back chamber among the correlation technique, reach adjustment earphone acoustic performance and earphone tone quality, the chamber pressure plays the pressure-equalizing effect around balanced simultaneously.
The existing method for detecting the acoustic short-circuit hole is to test the light transmittance of the acoustic short-circuit hole, but the light transmittance cannot reflect the real acoustic resistance change of the short-circuit hole and is not completely consistent with the acoustic performance of the acoustic short-circuit hole, so that the problem of inaccurate acoustic performance detection result of the acoustic short-circuit hole is caused.
Disclosure of Invention
The invention mainly aims to provide a loudspeaker testing mechanism, which aims to solve the problem that the existing testing result for detecting the acoustic performance of an acoustic short circuit hole through light transmittance is inaccurate, so that the accuracy of the acoustic performance of the acoustic short circuit hole is improved.
In order to achieve the above object, the present invention provides a loudspeaker testing mechanism, which includes a fixture, a sound generating module and a first sound testing module; the jig is used for mounting the loudspeaker; the sounding module is arranged on one side of the jig, and at least part of the sound emitted by the sounding module enters the acoustic short-circuit channel; the first sound testing module is communicated with the sound short-circuit channel and used for picking up sound signals generated by the sound generating module after the sound passes through the sound short-circuit channel and testing the sound signals.
In an embodiment of the invention, the jig is provided with a first sound transmission channel, the first sound transmission channel is connected with one end of the sound short-circuit channel, which is far away from the sound production module, and the first sound testing module is arranged at one end of the first sound transmission channel, which is far away from the sound short-circuit channel.
In an embodiment of the present invention, the horn further includes a horn body, and the acoustic short circuit channel is disposed on one side of the horn body;
the tool is equipped with and is used for holding the mounting groove of loudspeaker, the mounting groove includes first region and second region, the loudspeaker body corresponds to be located first region, the correspondence of sound short circuit passageway is located the second region, the second region with first sound transmission channel is connected.
In an embodiment of the present invention, the horn has at least two acoustic short-circuit channels; the jig is provided with at least two first sound transmission channels, and one first sound transmission channel is correspondingly connected with one sound short-circuit channel.
In an embodiment of the present invention, the horn testing mechanism includes at least two sound modules, and one of the sound modules is disposed corresponding to one of the acoustic short-circuit channels.
In an embodiment of the present invention, the horn testing mechanism includes one sound generating module, and one sound generating module is disposed corresponding to at least two of the acoustic short-circuit channels.
In an embodiment of the present invention, at least two of the first sound transmission channels are communicated to form an acoustic channel, the acoustic channel is provided with a detection port, and the first sound testing module is disposed at the detection port.
In an embodiment of the present invention, the horn testing mechanism includes at least two first sound testing modules, one first sound transmission channel is provided with one detection port, and each detection port is provided with one first sound testing module.
In an embodiment of the present invention, the horn further includes a frame, the horn body and the acoustic short-circuit channel are both disposed on the frame, and the acoustic short-circuit channel is located at the periphery of the horn body;
the loudspeaker accredited testing organization still includes second sound test module, the tool corresponds the first region is equipped with the second transaudient passageway, the one end that the second transaudient passageway deviates from the first region is equipped with the second sound test module.
In an embodiment of the present invention, the horn testing mechanism further includes a sealing member, and the sealing member is sealed between the sound generating module and the acoustic short circuit channel of the horn.
According to the technical scheme, the jig is used for mounting the loudspeaker, the sounding module and the first sound testing module are arranged, the sounding module is arranged on one side of the jig and can make sound, at least part of the sound made by the sounding module enters the sound short-circuit channel of the loudspeaker, the first sound testing module is connected with the sound short-circuit channel to pick up a sound signal after the sound made by the sounding module passes through the sound short-circuit channel, and the picked sound signal is tested, so that the purpose of testing the acoustic performance of the sound short-circuit channel by means of acoustic detection is achieved. Compared with the existing mode of testing the acoustic performance of the acoustic short-circuit channel by detecting the light transmittance, the testing mode of the embodiment can more intuitively reflect the acoustic performance of the acoustic short-circuit channel, and the detection accuracy of the acoustic performance of the acoustic short-circuit channel is improved.
Drawings
In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the embodiments or technical solutions of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a horn test mechanism according to an embodiment of the present invention having a single sound module;
FIG. 2 is a structural schematic diagram of another perspective of an embodiment of a horn testing mechanism of the present invention having a single sound module;
FIG. 3 is a schematic structural diagram of a horn test mechanism according to an embodiment of the present invention, wherein the horn test mechanism has two sound modules;
FIG. 4 is a schematic structural diagram of another view angle of an embodiment of a horn testing mechanism of the present invention having two sound modules;
FIG. 5 is a schematic structural diagram of a horn test mechanism of the present invention having two sound modules and a test port;
FIG. 6 is a schematic partly sectional view of the first acoustical channel of FIG. 5;
FIG. 7 is a schematic structural diagram of another view angle of the testing mechanism of the speaker with two sound modules and a testing port according to the present invention;
FIG. 8 is a schematic structural view of a horn testing mechanism of the present invention having a single sound module and a single detection port;
FIG. 9 is a schematic view, partly in section, of the first acoustical channel of FIG. 8;
FIG. 10 is a schematic view of another alternative angle of view of the horn testing mechanism of the present invention having a single sound module and a test port;
FIG. 11 is a schematic view of the assembly of the speaker testing mechanism with a single sound module and a sealing member according to the present invention;
FIG. 12 is a schematic view of the seal of FIG. 11 in a translucent state;
FIG. 13 is a schematic view of the assembly of the speaker test mechanism of the present invention with two sound modules and a sealing member;
fig. 14 is a schematic structural view of the sealing member of fig. 13 in a translucent state.
The reference numbers indicate:
| reference numerals | Name (R) | Reference numerals | Name(s) |
| 100 | |
400 | Horn (loudspeaker) |
| 110 | First |
410 | |
| 111 | |
420 | Acoustic short- |
| 120 | Second |
401 | |
| 101 | |
500 | Second |
| 200 | |
600 | |
| 300 | First of allSound testing module |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
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.
It should be noted that, if directional indications (such as up, down, left, right, front, back, 8230; etc.) are involved in the embodiment of the present invention, the directional indications are only used for explaining the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the figure), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a horn testing mechanism, aiming at detecting the acoustic performance of a horn 400 with an acoustic short-circuit channel 420 so as to improve the accuracy of the acoustic performance detection of the acoustic short-circuit channel 420.
In an embodiment of the present invention, as shown in fig. 1, fig. 2, fig. 3 and fig. 4, the horn testing mechanism includes a fixture 100, a sound emitting module 200 and a first sound testing module 300.
The jig 100 is used for mounting the horn 400; the sounding module 200 is disposed at one side of the fixture 100, and at least a part of the sound generated by the sounding module 200 enters the acoustic short-circuit channel 420; the first sound testing module 300 is connected to the acoustic short-circuit channel 420 to pick up the sound signal emitted from the sound emitting module 200 after passing through the acoustic short-circuit channel 420 and test the sound signal.
It is understood that the speaker 400 has an acoustic short-circuit channel 420, and the acoustic short-circuit channel 420 may be a through hole, a pipe or other regular or irregular channel for communicating two sides of the speaker 400, and is used for communicating the front cavity or the rear cavity when the speaker 400 is applied to a headphone or other acoustic products, so as to achieve the purpose of adjusting the sound quality of the headphone or other acoustic products and balancing the pressure. In the practical application process, the acoustic short-circuit channel 420 itself does not have a function of making a sound, and based on this, in this embodiment, when the acoustic performance of the acoustic short-circuit channel 420 is detected, the sound-generating module 200 is disposed on one side of the fixture 100, at least a part of the sound generated by the sound-generating module 200 can enter the acoustic short-circuit channel 420, and the first sound testing module 300 is disposed at an end of the acoustic short-circuit channel 420 away from the sound-generating module 200, so as to pick up a sound signal after the sound generated by the sound-generating module 200 passes through the acoustic short-circuit channel 420, and process and test the picked-up sound signal, so as to finally obtain an acoustic testing result of the acoustic short-circuit channel 420. Compared with the existing mode of detecting the acoustic short-circuit channel 420 through light transmittance, the acoustic detection result of the embodiment can reflect the real situation of the acoustic short-circuit channel 420 by directly detecting the acoustic short-circuit channel 420 through acoustic testing, and the accuracy of acoustic detection of the acoustic short-circuit channel 420 is improved.
In practical applications, the shape and structure of the sound module 200 may be determined according to practical situations, as long as it can emit sound, such as a speaker or a loudspeaker, and may be a cylinder or a square or other special-shaped structure. The structure of the first sound testing module 300 may also be determined according to the actual situation, for example, a standard microphone or a dummy ear may be selected, the sound transmitted from the acoustic short-circuit channel 420 is picked up by the standard microphone or the dummy ear, and the picked-up sound is analyzed, for example, the sound may be compared with standard sound information or preset sound information corresponding to the preset acoustic short-circuit channel 420, so as to determine whether the acoustic performance of the acoustic short-circuit channel 420 meets the requirement, so as to achieve the purpose of detecting the acoustic performance of the acoustic short-circuit channel 420.
It should be noted that, in this embodiment, an important means for detecting the acoustic performance of the acoustic short-circuit channel 420 is to detect the sound transmitted from one end of the acoustic short-circuit channel 420 to the other end of the acoustic short-circuit channel 420, during an actual application process, the sealing between the first sound testing module 300 and the acoustic short-circuit channel 420 is particularly important to prevent external sound from interfering with the first sound testing module 300, optionally, the first sound testing module 300 may be directly sealed at the tail end of the sound transmission channel of the acoustic short-circuit channel 420, or the tail end of the acoustic short-circuit channel 420 is hermetically connected with a sound transmission channel or a sealed cavity, and the first sound testing module 300 is disposed in the sound transmission channel or the sealed cavity, so that the sound picked up by the first sound testing module 300 is only the sound transmitted from the acoustic short-circuit channel 420, and the reliability of the detection structure is ensured.
The sealing performance between the sound module 200 and the acoustic short-circuit channel 420 does not have to be strictly required, for example, the sound module 200 and the acoustic short-circuit channel 420 can be completely sealed, and at this time, all the sound emitted by the sound module 200 enters the acoustic short-circuit channel 420; alternatively, the sound module 200 is not sealed from the acoustic short-circuit channel 420, and the sound emitted from the sound module 200 partially enters the acoustic short-circuit channel 420. In the above two modes, the sound emitted by the sound emitting module 200 can pass through the acoustic short-circuit channel 420 and propagate to the first sound testing module 300, so that the first sound testing module 300 can pick up the sound signal transmitted by the acoustic short-circuit channel 420 for testing, and the effect of detecting the acoustic performance is achieved.
In the technical solution of the present invention, the jig 100 is used for mounting the horn 400, and by providing the sound module 200 and the first sound testing module 300, the sound module 200 is disposed at one side of the jig 100 and can make a sound, at least a part of the sound emitted by the sound module 200 enters the acoustic short-circuit channel 420 of the horn 400, and by connecting the first sound testing module 300 with the acoustic short-circuit channel 420, the sound signal generated by the sound module 200 after passing through the acoustic short-circuit channel 420 can be picked up and tested, so as to achieve the purpose of testing the acoustic performance of the acoustic short-circuit channel 420 by using an acoustic detection means. Compared with the existing method for testing the acoustic performance of the acoustic short-circuit channel 420 by detecting the light transmittance, the testing method of the embodiment can more intuitively reflect the acoustic performance of the acoustic short-circuit channel 420, and the detection accuracy of the acoustic performance of the acoustic short-circuit channel 420 is improved.
In order to further improve the accuracy of the detection result, referring to fig. 2, 4, 7 and 10, in an embodiment of the invention, the jig 100 is provided with a first sound transmission channel 110, the first sound transmission channel 110 is connected to an end of the acoustic short-circuit channel 420 away from the sound generating module 200, and the first sound testing module 300 is disposed at an end of the first sound transmission channel 110 away from the acoustic short-circuit channel 420.
The speaker 400 is mounted on the jig 100, and it can be understood that the speaker 400 can be accommodated inside the jig 100, or can be mounted on the surface of the jig 100, and the specific mounting manner can be determined according to the structure of the jig 100 and the shape structure of the speaker 400. Jig 100 is equipped with first sound conduction channel 110, this one end of first sound conduction channel 110 is connected with the sound short-circuit channel 420 of loudspeaker 400, the other end is connected with first sound test module 300, then sound production module 200 sets up in the one side that sound short-circuit channel 420 deviates from first sound conduction channel 110, the sound that sound production module 200 sent passes sound short-circuit channel 420 in proper order, reach first sound test module 300 department after the first sound conduction channel 110, first sound conduction channel 110 plays the effect of prolonging the distance of first sound test module 300 and sound production module 200 and sealed first sound test module 300 and sound short-circuit channel 420 in this embodiment, prevent that the sound that sound production module 200 sent from directly reacing first sound test module 300 department not passing sound short-circuit channel 420, and the condition that influences the test result takes place, thereby reach the mesh that improves the detection accuracy.
In practical applications, the shape and structure of the first sound transmission channel 110 may be determined according to practical situations, and may be a structure of a cylindrical through hole, or a regular or irregular pipe structure. The connection mode between the first sound transmission channel 110 and the first sound testing module 300 can be determined according to actual conditions, as long as the first sound testing module 300 is not interfered by the outside, for example, the first sound testing module 300 can be completely arranged inside the first sound transmission channel 110, and is sealed and anti-interference directly through the cavity wall of the first sound transmission channel 110; alternatively, the first sound transmission channel 110 may be provided with a detection port 111, and the first sound testing module 300 may be installed at the detection port 111 and then sealed by a sealing case or sealant.
In an embodiment of the present invention, referring to fig. 1 to 4, the horn 400 further includes a horn body 410, and the acoustic short circuit channel 420 is disposed at one side of the horn body 410;
the jig 100 is provided with a mounting groove 101 for accommodating the horn 400, the mounting groove 101 comprises a first region and a second region, the horn body 410 is correspondingly arranged in the first region, the acoustic short-circuit channel 420 is correspondingly arranged in the second region, and the second region is connected with the first sound transmission channel 110.
In this embodiment, the speaker 400 is accommodated in the mounting groove 101 of the fixture 100, so as to ensure the stability of the speaker 400 in the detection process. Meanwhile, considering the structure that the acoustic short-circuit channel 420 is communicated with the two sides of the loudspeaker 400, when the loudspeaker 400 is arranged in the mounting groove 101, the mounting groove 101 also plays a role in separating sound propagation, and sound passing through the acoustic short-circuit channel 420 is prevented from being propagated to the outside or outside sound is prevented from entering the acoustic short-circuit channel 420. The mounting groove 101 is provided with a first region for mounting the horn body 410 and a second region for mounting the acoustic short-circuit channel 420, and the first acoustic channel 110 is connected with the second region, so that sound emitted through the acoustic short-circuit channel 420 can directly enter the first acoustic channel 110 from the second region and then be transmitted to the first acoustic testing module 300.
In practice, an opening communicating with the first sound-conveying channel 110 may be provided at the second region, the acoustic short-circuit channel 420 of the horn 400 communicating with the opening, so that sound coming out of the acoustic short-circuit channel 420 can pass through the opening into the first sound-conveying channel 110 without problems.
It is understood that the number of the acoustic short-circuit channels 420 of the speaker 400 is determined according to actual situations, and may be one, two or more, and the jig 100 may set the position of the first region corresponding to the position of the acoustic short-circuit channel 420.
In practical applications, referring to fig. 2, 4, 7 and 10, the arrangement positions and the number of the acoustic short-circuit channels 420 on the speaker 400 are determined according to the actual speaker 400 product, and in order to improve the adaptability of the speaker testing mechanism, the structures and the numbers of the first acoustic channels 110, the sound generating modules 200 and the first acoustic testing modules 300 on the fixture 100 may all be determined according to the actual speaker 400 product.
The horn 400 has at least two of the acoustic short-circuit channels 420; the jig 100 is provided with at least two first sound transmission channels 110, and one first sound transmission channel 110 is correspondingly connected with one acoustic short-circuit channel 420.
It can be understood that, when the number of the acoustic short-circuit channels 420 of the speaker 400 is at least two, in order to test at least two acoustic short-circuit channels 420, at least two first acoustic transmission channels 110 may be correspondingly disposed on the fixture 100, and each first acoustic transmission channel 110 is correspondingly connected to one acoustic short-circuit channel 420, so that each sound passing through the acoustic short-circuit channel 420 can enter the correspondingly connected first acoustic transmission channel 110, on this basis, the number and positions of the sound generating modules 200 and the first acoustic test modules 300 may be set according to actual situations, for example, a sound may be generated by one sound generating module 200 for at least two acoustic short-circuit channels 420 at the same time, or a sound may be generated by one sound generating module 200 for one acoustic short-circuit channel 420; such as the sound of all acoustic short-circuited channels 420 being picked up by one first acoustic testing module 300 or the sound of one acoustic short-circuited channel 420 being picked up by one first acoustic testing module 300.
In an embodiment of the present invention, referring to fig. 3 to fig. 7, the horn testing mechanism includes at least two sound generating modules 200, and one sound generating module 200 is disposed corresponding to one acoustic short-circuit channel 420.
In this embodiment, a single sound module 200 is provided for each acoustic short-circuit channel 420, so that the sound signals passing through each acoustic short-circuit channel 420 are independent from each other, and the sound signals entering the corresponding first sound transmission channel 110 are also independent from each other. In an actual application process, one detection port 111 may be disposed on each sound transmission channel 110, and one first sound testing module 300 is disposed at each detection port 111, in this manner, each first sound testing module 300 can accurately test the acoustic performance of the corresponding acoustic short-circuit channel 420, so that mutual detection cannot interfere with each other, and the accuracy of the detection result is further improved.
Certainly, on the basis of the above embodiment, at least two first sound transmission channels 110 may also be communicated to form a complete sound channel, a detection port 111 is disposed on the complete sound channel, and a first sound testing module 300 is disposed at the detection port 111, so that the sounds passing through at least two sound short-circuit channels 420 are merged after passing through the corresponding first sound transmission channels 110, and a pickup test is performed through the first sound testing module 300 at the detection port 111, thereby realizing that the total acoustic performance of at least two sound short-circuit channels 420 is simultaneously tested through one sound testing module 300.
In an embodiment of the present invention, referring to fig. 8 to 10, the horn testing mechanism includes one of the sound modules 200, and one of the sound modules 200 is disposed corresponding to at least two of the acoustic short-circuit channels 420.
In this embodiment, the sound emitted from one sound emitting module 200 can enter at least two acoustic short-circuit channels 420 at the same time, and then is conducted to the first sound testing module 300 for picking up and testing after being conducted through the corresponding first sound transmission channels 110. In an actual application process, one detection port 111 may be disposed on each sound transmission channel 110, and one first sound testing module 300 is disposed at each detection port 111, in this manner, each first sound testing module 300 can accurately test the acoustic performance of the corresponding acoustic short-circuit channel 420, so that mutual detection cannot interfere with each other, and the accuracy of the detection result is further improved.
Certainly, on the basis of the above embodiment, at least two first sound transmission channels 110 may also be communicated to form a complete sound channel, a detection port 111 is disposed on the complete sound channel, and a first sound testing module 300 is disposed at the detection port 111, so that the sounds passing through at least two sound short-circuit channels 420 are merged after passing through the corresponding first sound transmission channels 110, and a pickup test is performed through the first sound testing module 300 at the detection port 111, thereby realizing that the total acoustic performance of at least two sound short-circuit channels 420 is simultaneously tested through one sound testing module 300.
In an embodiment of the present invention, referring to fig. 1, fig. 2, fig. 4, fig. 7, and fig. 10, the horn 400 further includes a frame 401, the horn body 410 and the acoustic short-circuit channel 420 are both disposed on the frame 401, and the acoustic short-circuit channel 420 is located on an outer periphery of the horn body 410;
the loudspeaker test mechanism further comprises a second sound test module 500, the jig 100 is provided with a second sound transmission channel 120 corresponding to the first area, and the second sound transmission channel 120 is provided with the second sound test module 500 at one end deviating from the first area.
It can be understood that the frame 401 plays a role of supporting and fixing the speaker body 410, and the acoustic short circuit channel 420 is arranged on the frame 401, so that the process of the speaker 400 is simplified. Jig 100 is equipped with second sound transmission channel 120 corresponding to the first region for the sound that loudspeaker body 410 sent can conduct to second sound transmission channel 120 department, sets up second sound test module 500 through the one end that deviates from the first region at second sound transmission channel 120, picks up and tests the sound that loudspeaker body 410 sent, thereby realizes the acoustic test function to loudspeaker body 410.
The structure of the second sound testing module 500 may be determined according to actual conditions, for example, a standard microphone or a simulated ear may be selected, sound transmitted from the second sound transmission channel 120 is picked up by the standard microphone or the simulated ear, and the picked-up sound is analyzed, for example, the sound may be compared with standard sound information or preset sound information corresponding to a preset speaker body 410, so as to determine whether the acoustic performance of the speaker body 410 meets requirements, so as to achieve the purpose of detecting the acoustic performance of the speaker body 410.
In this embodiment, the fixture 100 is provided with the mounting groove 101 for accommodating the speaker 400, the speaker body 410 is correspondingly disposed in the first region, the acoustic short-circuit channel 420 is correspondingly disposed in the second region, meanwhile, the fixture 100 is further provided with the first acoustic channel 110 connected with the first region, the second acoustic channel 120 connected with the second region, the first acoustic channel 110 is connected with the first sound testing module 300, the acoustic performance test on the acoustic short-circuit channel 420 is realized, the second acoustic channel 120 is connected with the second sound testing module 500, the acoustic performance test on the speaker body 410 is realized, thereby realizing that the acoustic performance test on the speaker body 410 and the acoustic short-circuit channel 420 can be completed through the same fixture 100. Compared with the prior art, the mode that the light transmittance of the acoustic short-circuit channel 420 is firstly detected in the state of the basin frame 401, and then the acoustic performance of the loudspeaker body 410 is detected in the state of the loudspeaker at least twice is adopted, in the embodiment, the acoustic performance of the loudspeaker body 410 and the acoustic performance of the acoustic short-circuit channel 420 are respectively detected on one jig 100 through acoustic testing, and the testing of the loudspeaker body 410 and the acoustic short-circuit channel 420 can be realized only by once sample placement, so that the testing process of the loudspeaker 400 is simplified, and meanwhile, the accuracy of the testing result is also improved.
Optionally, considering that the horn body 410 itself can make a sound, and the acoustic short circuit channel 420 is disposed at one side of the horn body 410, in this embodiment, the second sound transmission channel 120 is a through hole axially penetrating through the jig 100; the first sound transmission channel 110 is located at the outer periphery of the second sound transmission channel 120. In the practical application process, the second sound testing module 500 can be directly disposed in the second sound transmission channel 120 of the fixture 100, i.e., can be disposed under the speaker body 410, so as to test the speaker body 410.
First sound transmission channel 110 can set up to the annular body or the arc body around second sound transmission channel 120, first sound transmission channel 110 and second sound transmission channel 120 can not communicate each other, guarantee independent test between the acoustics test of loudspeaker body 410 and the acoustics test of sound short circuit channel 420, the test of loudspeaker body 410 and sound short circuit channel 420 can go on simultaneously under this kind of mode, can not interfere with each other, when guaranteeing the testing result accuracy, efficiency of software testing has been improved.
Certainly, the first sound transmission channel 110 and the second sound transmission channel 120 can also be connected, and the sound testing module (the first sound testing module or the second sound testing module) is installed by arranging the detection port 111 at the connection position, so that the acoustic testing of the horn body 410 and the acoustic testing of the sound short-circuit channel 420 are performed one by one, the number of the testing modules is reduced, the size of the testing structure is reduced, and the cost is reduced.
In an embodiment of the present invention, referring to fig. 11 to 14, the horn testing mechanism further includes a sealing member 600, and the sealing member 600 is sealed between the sound generating module 200 and the acoustic short-circuit channel 420 of the horn 400.
It will be appreciated that to ensure that sound emitted by the sound module 200 is better able to enter the acoustic short circuit channel 420, a seal 600 may be sealed between the sound module 200 and the acoustic short circuit channel 420 to prevent interference from outside sounds.
Alternatively, when the number of the acoustic short-circuit channels 420 is greater than one, a sound emitting module 200 may be disposed corresponding to each acoustic short-circuit channel 420, and at this time, a sealing member 600 may be disposed between each acoustic short-circuit channel 420 and the sound emitting module 200, and when applied to the jig 100, the sealing member 600 may be in butt-sealing contact with each first region, so as to ensure reliability of sound propagation between each acoustic short-circuit channel 420 and the sound emitting module 200.
Alternatively, when the number of the acoustic short-circuit channels 420 is greater than one, only one sound emitting module 200 may be disposed to emit sound to all the acoustic short-circuit channels 420 at the same time, and at this time, the sealing member 600 may be directly covered on the mounting groove 101 of the jig 100 to seal the sound emitting module 200 and the mounting groove 101 of the jig 100 together, so as to ensure the reliability of the sound sources of all the acoustic short-circuit channels 420. It can be understood that, in this embodiment, the sealed cavity enclosed by the sealing element 600 and the fixture 100 includes the speaker body 410, and the sealed cavity can also be used as a rear cavity of the speaker body 410, and can play a role of a rear cavity with a specified volume when the performance of the speaker body 410 is tested.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or any other related technical fields, which are directly or indirectly applied to the present invention, are included in the scope of the present invention.
Claims (8)
1. A loudspeaker accredited testing organization for testing loudspeaker, loudspeaker have an acoustic short-circuit channel, characterized in that, loudspeaker accredited testing organization includes:
the jig is used for mounting the horn;
the sounding module is arranged on one side of the jig, and at least part of the sound emitted by the sounding module enters the acoustic short-circuit channel; and
the first sound testing module is communicated with the acoustic short-circuit channel and is used for picking up and testing sound signals generated by the sound generating module after the sound passes through the acoustic short-circuit channel;
the jig is provided with a first sound transmission channel, the first sound transmission channel is connected with one end, away from the sound production module, of the sound short-circuit channel, and the first sound testing module is arranged at one end, away from the sound short-circuit channel, of the first sound transmission channel;
the loudspeaker also comprises a loudspeaker body, and the acoustic short-circuit channel is arranged on one side of the loudspeaker body;
the tool is equipped with and is used for holding the mounting groove of loudspeaker, the mounting groove includes first region and second region, the loudspeaker body corresponds to be located the first region, the correspondence of sound short circuit passageway is located the second region, the second region with first sound transmission channel is connected.
2. A horn testing mechanism as claimed in claim 1, wherein said horn has at least two of said acoustic short circuit channels; the jig is provided with at least two first sound transmission channels, and one first sound transmission channel is correspondingly connected with one sound short-circuit channel.
3. A horn testing mechanism as claimed in claim 2, wherein said horn testing mechanism includes at least two of said sound modules, one of said sound modules being disposed in correspondence with one of said acoustic short circuits.
4. A horn testing mechanism according to claim 2, wherein said horn testing mechanism includes one of said sound emitting modules, one of said sound emitting modules being provided in correspondence with at least two of said acoustic short circuits.
5. A horn testing mechanism according to claim 3 or 4, wherein at least two of the first sound conveying channels are in communication to form an acoustic channel, the acoustic channel being provided with a test port at which the first acoustic testing module is located.
6. A loudspeaker test mechanism according to claim 3 or 4, wherein the loudspeaker test mechanism comprises at least two first acoustic test modules, one first acoustic channel is provided with a corresponding detection port, and each detection port is provided with one first acoustic test module.
7. A loudspeaker test mechanism according to any one of claims 1 to 4, wherein the loudspeaker further comprises a frame, the loudspeaker body and the acoustic short-circuit channel are both arranged on the frame, and the acoustic short-circuit channel is located on the periphery of the loudspeaker body;
the loudspeaker accredited testing organization still includes second sound test module, the tool corresponds the first region is equipped with the second transaudient passageway, the one end that the second transaudient passageway deviates from the first region is equipped with the second sound test module.
8. A horn testing mechanism according to any one of claims 1 to 4, further comprising a seal sealed between the sound module and the acoustic short circuit path of the horn.
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| CN202110329830.9A CN113068109B (en) | 2021-03-26 | 2021-03-26 | Horn testing mechanism |
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| CN202110329830.9A CN113068109B (en) | 2021-03-26 | 2021-03-26 | Horn testing mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2858164B1 (en) * | 2003-07-25 | 2007-12-28 | Cit Alcatel | SOUND RESTITUTION TRANSDUCER |
| CN105307098B (en) * | 2015-10-30 | 2018-10-19 | 歌尔股份有限公司 | A kind of test fixture, test system and test method |
| CN105722003A (en) * | 2016-01-20 | 2016-06-29 | 苏州搏技光电技术有限公司 | MEMS microphone testing mechanism |
| CN106454674A (en) * | 2016-09-12 | 2017-02-22 | 歌尔股份有限公司 | Testing tooling |
| CN206923046U (en) * | 2017-06-23 | 2018-01-23 | 深圳精拓创新科技有限公司 | Loudspeaker T/S parameter test devices |
| CN107343247B (en) * | 2017-07-04 | 2020-07-14 | 瑞声科技(新加坡)有限公司 | Loudspeaker box |
| CN107360531B (en) * | 2017-08-22 | 2020-08-21 | 深圳传音控股股份有限公司 | Loudspeaker testing device |
| CN208488210U (en) * | 2018-07-27 | 2019-02-12 | Oppo（重庆）智能科技有限公司 | The detection jig of transaudient access air-tightness for detection electronic installation |
| CN110784815B (en) * | 2019-11-05 | 2021-02-12 | 苏州市精创测控技术有限公司 | Device and method for testing acoustic performance of product |
| CN110856057B (en) * | 2019-11-28 | 2021-06-04 | 歌尔股份有限公司 | Loudspeaker device and earphone with same |
| CN212013053U (en) * | 2020-04-22 | 2020-11-24 | 湖北冠音泰科技有限公司 | Loudspeaker vibration noise test fixture |
| CN112312296B (en) * | 2020-09-08 | 2022-01-28 | 深圳市逸音科技有限公司 | ANC earphone acoustic test system |
| CN111901739B (en) * | 2020-09-30 | 2021-01-22 | 歌尔股份有限公司 | Sound production module, test method and electronic equipment |
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