CN115175079A - Testing arrangement is used in stereo set processing - Google Patents

Abstract

The invention discloses a testing device for sound processing, and particularly relates to the field of sound testing. According to the invention, the vibration structure senses the air vibration generated by the vibration of the cone in the sound-restraining cover, so that the vibration coil generates vibration in the magnetic ring, the vibration coil forms a current for detection, the influence of external sound can be avoided by checking the change condition of the current, the detection precision of the equipment can be fully improved, and the detection efficiency of the equipment is improved.

Description

Testing arrangement is used in stereo set processing

Technical Field

The invention relates to the technical field of sound testing, in particular to a testing device for sound processing.

Background

The loudspeaker is a transducer for converting an electric signal into an acoustic signal, and the quality of the loudspeaker has great influence on the sound quality. The loudspeaker is the weakest component in the audio equipment, and is the most important component for the audio effect. Loudspeakers are of a wide variety and vary widely in price. The audio frequency electric energy makes the paper cone or the diaphragm vibrate and generate resonance (resonance) with the surrounding air through electromagnetic, piezoelectric or electrostatic effect to make sound.

When the sound box is produced, product testing can be carried out, defective products are detected, the situation that defective products flow into the market is avoided, the main body of the sound box is a loudspeaker, and the loudspeaker emits sound through vibration of a cone, so that sound production testing of the loudspeaker cannot be carried out.

However, in the existing sound testing scheme, after the speaker is powered on by the power-on device, whether the speaker makes sound is judged manually, but in the actual use of the scheme, more defects still exist, for example, when the speaker makes sound, the speaker is easily influenced by the working environment, and the staff is difficult to judge the sound effect made by the speaker, for example, when the cone of the speaker is not firmly installed enough, or when a gap exists on the cone, the speaker can play the sound, but the played tone quality can be different, but the problems are difficult to judge manually, so that the testing accuracy is low.

Disclosure of Invention

The invention provides a testing device for sound processing, which aims to solve the problems that: the existing problem that the discrimination capability of the speaker sound playing effect is poor is solved.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a testing arrangement for stereo set processing, including detecting platform and beam sound cover, be provided with speaker support piece on the detecting platform, the detecting platform carries out fixed bearing to the speaker through speaker support piece, the vertical motion of beam sound cover in the top of detecting platform, the top of beam sound cover is for sealing, the bottom of beam sound cover is the opening, the internally mounted of beam sound cover has the shock detector, the shock detector includes the installation cover, the bottom of installation cover sets up to the opening, the internally mounted of installation cover has the vibrations structure, the vibration coil is installed to the top of vibrations structure, fixedly mounted has the magnetic ring in the installation cover, the vibration coil extends to the inboard region of magnetic ring, the beam sound cover moves down and is close to the speaker on the detecting platform, and hug closely through the cone in the seal assembly in the speaker, utilize the speaker in the detecting platform to connect with the contact on the speaker, and set for the broadcast procedure makes the speaker broadcast fixed sound section, the vibration detector passes through when the cone, through the closed air in the beam sound cover carries out the propagation, the vibrations of vibrations drives the inside air of beam sound cover, and then drive the vibrations structure and produce vibrations, and make the vibrations coil in the work of microphone, can detect the weak current, this detection line, can detect the detection of this weak current detection to the detection.

In a preferred embodiment, a mounting frame is fixedly connected to one side of the detection table, a lifting driver is fixedly mounted at the top of the mounting frame, the bottom end of the lifting driver is fixedly connected with the sound-beam cover, and the lifting driver drives the sound-beam cover to vertically move up and down above the detection table;

through adopting above-mentioned technical scheme, linear drive subassembly such as cylinder, pneumatic cylinder or linear motor can be chooseed for use to the lift driver to the realization is to the stable control of beam sound cover lift.

In a preferred embodiment, the loudspeaker support is a conveyer belt, the conveyer belt is driven by a shaft roller, the upper part of the conveyer belt slides along the surface of the detection table, and a loudspeaker clamping groove for clamping and supporting the loudspeaker is arranged in the conveyer belt;

through adopting above-mentioned technical scheme, clamp the groove through the speaker with the conveyer belt, can utilize the conveyer belt to carry out spacing support and transport to the speaker to detect when the speaker is carried to examining the test table, and then fuse into the stereo set production line with equipment, carry, detect while.

In a preferred embodiment, the inner cavity of the sound-restraining cover is provided with a conical cavity, and the mounting cover is arranged at the top of the conical cavity of the sound-restraining cover;

through adopting above-mentioned technical scheme, utilize the reflection of beam sound cover inner wall to further increase sound wave intensity to improve the detection effect of vibrations detector to the sound.

In a preferred embodiment, a loudspeaker power connecting device is installed in the detection table, a contact matched with a contact used for installing a wire at the bottom of the loudspeaker is arranged on the loudspeaker power connecting device, the loudspeaker power connecting device is connected with a loudspeaker playing controller, and the loudspeaker power connecting device is driven by an air cylinder to lift and slide in the detection table;

by adopting the technical scheme, when the loudspeaker arrives at the detection table, the loudspeaker power connection device is controlled to move upwards to enable the contact head to be in butt joint with the contact point, so that circuit connection of the loudspeaker can be completed, and then the loudspeaker is controlled to play the sound of the fixed sound section through the loudspeaker play controller to test.

In a preferred embodiment, the vibration structure is a vibration membrane, the vibration membrane is an elastic component, the edge of the vibration membrane is fixedly connected with the mounting cover, the middle part of the vibration membrane is convexly arranged, and the vibration coil is fixedly mounted at the top of the vibration membrane;

by adopting the technical scheme, the vibration film is used as a group of elastic feedback structures, the principle of the vibration film is the same as that of the microphone, and when the loudspeaker cone vibrates, the vibration film is used for vibrating along with the air in the sound bundling cover to complete detection.

In a preferred embodiment, the vibration structure is a piston sheet, the piston sheet is slidably mounted inside the mounting cover, the edge of the piston sheet is attached to the inner wall of the mounting cover, the vibration coil is fixedly mounted at the top of the piston sheet, an elastic support member is arranged between the piston sheet and the mounting cover, the elastic support member supports the piston sheet to vibrate when the speaker cone vibrates, and the elastic support member is of a reed structure;

by adopting the technical scheme, the piston sheet can vibrate without deformation, so that the amplitude of the piston sheet can be improved, and the detection effect is enhanced.

In a preferred embodiment, the sealing assembly comprises a flexible sealing element, the flexible sealing element is composed of a group of annular structures of which the inner edges and the outer edges are turned upwards and deformed, the turned-up inner edges and the turned-up outer edges of the flexible sealing element are connected to the bottom of the sound restraining cover, and a group of partition areas are formed on the inner sides of the turned-up inner edges and the turned-up outer edges of the flexible sealing element and are adaptively changed along with the deformation of the flexible sealing element;

by adopting the technical scheme, because the flexible sealing element is an elastic component, when the lower part of the flexible sealing element is contacted with the cone, the sealing element can be automatically deformed and is tightly attached to the inner wall of the cone, so that effective sealing is completed, and the sealing element can automatically adapt to the inner wall of the cone according to whether the inner wall of the cone is convex or not so as to complete effective sealing and separation.

In a preferred embodiment, the sealing assembly further comprises an outer sliding ring, the outer sliding ring is slidably mounted outside the sound-restraining cover, the bottom end of the outer sliding ring and the bottom end of the sound-restraining cover are both provided with a clamping groove for clamping the flexible sealing element, the outer edge of the flexible sealing element is turned upwards and fixedly clamped with the clamping groove at the bottom of the outer sliding ring, and the inner edge of the outer sliding ring is turned upwards and fixedly clamped with the clamping groove at the bottom of the sound-restraining cover;

through adopting above-mentioned technical scheme, when realizing installing flexible seal spare, utilize outer sliding ring to reciprocate for beam of sound cover, also can change the size of cut-off district in the flexible seal spare, the curved surface condition that flexible seal spare that can further adaptation was laminated is exactly the different curved surface states that flexible seal spare adapted, and outer sliding ring also is different for seal assembly's height, but all can hug closely the cone, guarantees sealed effect.

In a preferred embodiment, an elastic part is arranged between the top of the outer sliding ring and the sound-restraining cover, the elastic part pushes the outer sliding ring to move downwards away from the sound-restraining cover, and the elastic part is a pressure spring;

through adopting above-mentioned technical scheme, can be with the help of the elasticity of flexible sealing member itself and the elasticity of elastic component, when making flexible sealing member not receive pressure, outer sliding ring fully downwardly extending, the wall region in the flexible sealing member is minimum this moment, it is applicable in comparatively gentle cone inner wall seals, and when restrainting the sound cover back that moves down, outer sliding ring receives the support back of cone, restraint the sound cover for moving down, can increase the inside wall region scope of flexible sealing member, and increase the variability scope of flexible sealing member and cone contact surface, and then improve the sealed effect and the adaptability of flexible sealing member.

The invention has the technical effects and advantages that:

1. according to the invention, the vibration structure senses the air vibration generated by the vibration of the cone in the sound restraining cover, so that the vibration coil generates vibration in the magnetic ring, the vibration coil forms current for detection, namely the change condition of the current can be checked, and the sealing assembly is sealed with the cone, so that the sound wave generated by the loudspeaker can be prevented from being diffused, the influence of external sound can be avoided, the detection precision of equipment can be fully improved, and the detection efficiency of the equipment can be improved;

2. the inner edge and the outer edge of the flexible sealing element are turned upwards to be connected with the sound restraining cover and the outer sliding ring, so that a partition area is formed in the flexible sealing element, the flexible sealing element is adaptively deformed when contacting with a cone and is tightly attached to the inner wall of the cone, effective sealing is finished, and the flexible sealing element can automatically adapt to the inner wall of the cone according to whether the inner wall of the cone is provided with a bulge or not, so that effective sealing and partition are finished.

Drawings

FIG. 1 is a schematic view of the main structure of the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

FIG. 3 is a schematic view of the internal structure of the bonded beam enclosure and speaker of the present invention;

FIG. 4 is a schematic structural diagram of a vibration detector of the present invention employing another vibration structure;

FIG. 5 is a schematic view of another use of the seal assembly of the present invention;

FIG. 6 is a view of the flexible seal of the present invention after installation.

The reference signs are: 1. a detection table; 11. a mounting frame; 12. a lift drive; 13. a loudspeaker power connection device; 2. a beam sound cover; 21. a seal assembly; 211. a flexible seal; 212. an outer slip ring; 213. a card slot; 3. a vibration detector; 31. installing a cover; 32. a vibrating structure; 321. vibrating the membrane; 322. a piston plate; 323. an elastic support member; 33. a vibrating coil; 34. a magnetic ring; 4. a speaker support; 41. a conveyor belt; 42. and (4) a loudspeaker clamping groove.

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 obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Examples

The invention provides a testing device for sound processing, which comprises a detection table 1 and a sound restraining cover 2, wherein a loudspeaker supporting piece 4 is arranged on the detection table 1, the detection table 1 fixedly supports a loudspeaker through the loudspeaker supporting piece 4, the sound restraining cover 2 vertically moves above the detection table 1, the top end of the sound restraining cover 2 is a seal, the bottom end of the sound restraining cover 2 is an opening, a vibration detector 3 is arranged inside the sound restraining cover 2, the vibration detector 3 comprises an installation cover 31, the bottom end of the installation cover 31 is an opening, a vibration structure 32 is arranged inside the installation cover 31, a vibration coil 33 is arranged above the vibration structure 32, a magnetic ring 34 is fixedly arranged in the installation cover 31, the vibration coil 33 extends to the inner region of the magnetic ring 34, as shown in fig. 3, the sound-restraining cover 2 moves down to close to the speaker on the detection platform 1 and tightly contacts with the cone in the speaker through the sealing component 21, the speaker power connection device 13 in the detection platform 1 is used to butt with the contact on the speaker, and the playing program is set to make the speaker play the fixed sound segment, the vibration detector 3 performs sound wave propagation through the enclosed air in the sound-restraining cover 2 when the cone vibrates, that is, the vibration of the cone drives the air inside the sound-restraining cover 2 to vibrate, and further drives the vibration structure 32 to vibrate, and makes the vibration coil 33 generate vibration in the magnetic ring 34, referring to the working principle of the microphone, a weak current for detection can be formed when the vibration coil 33 vibrates, the detected speaker can be detected by checking the weak current, if the speaker is a faulty product, the vibration that the cone produced is different with normal product to the electric current that leads to producing in the vibrations coil 33 is also different, and then only through the electric current condition that detects vibrations coil 33 production, can detect the judgement to the speaker, and seal assembly 21 is sealed with the cone, can prevent that the sound wave that the speaker produced from producing the diffusion, also can avoid the influence of external sound, and under the concentration of beam sound cover 2, make the sound wave can be stronger transmit to in shaking detector 3, simultaneously, sound wave transmission main part is the air, if there is the gap on the cone itself, can lead to air leakage when the cone shakes, and influence the transmission of the vibrations transmission of air, and then influence the current change of vibrations coil 33, and then the detection precision of improvement equipment that can be abundant, improve the detection efficiency of equipment.

As shown in fig. 2, one side fixedly connected with mounting bracket 11 of test table 1, the top fixed mounting of mounting bracket 11 has lift driver 12, lift driver 12's bottom and beam sound cover 2 fixed connection, lift driver 12 drive beam sound cover 2 is at the vertical up-and-down motion in the top of test table 1, and lift driver 12 can select for use straight line drive subassemblies such as cylinder, pneumatic cylinder or linear motor to the realization is to the stable control that beam sound cover 2 goes up and down.

As shown in fig. 2, the speaker support 4 is a conveyor belt 41, the conveyor belt 41 is driven by a spindle roller, the upper portion of the conveyor belt 41 slides along the surface of the test table 1, a speaker clamping groove 42 for clamping and supporting the speaker is provided in the conveyor belt 41, and the speaker can be clamped in the speaker clamping groove 42 of the conveyor belt 41, whereby the speaker can be limited and supported and conveyed by the conveyor belt 41, and the speaker can be detected when the speaker is conveyed to the test table 1, and further, the device can be integrated into the audio production line and conveyed while being detected.

As shown in fig. 3, the inner cavity of the beam sound cover 2 is a conical cavity, and the mounting cover 31 is mounted on the top of the conical cavity of the beam sound cover 2, so as to further increase the intensity of the sound wave by utilizing the reflection of the inner wall of the beam sound cover 2, thereby improving the sound detection effect of the vibration detector 3.

As shown in fig. 1, a speaker power connecting device 13 is installed in the detection table 1, a contact matched with a contact used for installing an electric wire at the bottom of the speaker is arranged on the speaker power connecting device 13, the speaker power connecting device 13 is connected with a speaker playing controller, the speaker power connecting device 13 is driven by an air cylinder to lift and slide in the detection table 1, when the speaker arrives at the detection table 1, the speaker power connecting device 13 is controlled to move upwards to enable the contact to be in butt joint with the contact, so that circuit connection of the speaker can be completed, and then the speaker playing controller is used for controlling the speaker to play sound of a fixed sound segment for testing.

As shown in fig. 3, the vibrating structure 32 may be a vibrating membrane 321, the vibrating membrane 321 is an elastic component, the edge of the vibrating membrane 321 is fixedly connected to the mounting cover 31, the middle of the vibrating membrane 321 is disposed in a protruding manner, the vibrating coil 33 is fixedly mounted on the top of the vibrating membrane 321, and then the vibrating membrane 321 is used as a set of elastic feedback structure, and the principle of the vibrating membrane 321 is the same as that of the microphone, when the speaker cone vibrates, the vibrating membrane 321 vibrates along with the air inside the sound-restraining cover 2, and the detection is completed.

As shown in fig. 4, with respect to the diaphragm 321, the vibrating structure 32 may also be a piston plate 322, the piston plate 322 is slidably mounted inside the mounting cover 31, an edge of the piston plate 322 is attached to an inner wall of the mounting cover 31, the vibrating coil 33 is fixedly mounted at a top of the piston plate 322, an elastic support 323 is disposed between the piston plate 322 and the mounting cover 31, the elastic support 323 supports the piston plate 322 to vibrate when the speaker cone vibrates, and the elastic support 323 selects a reed structure, so that the piston plate 322 can vibrate without deformation, thereby improving an amplitude of the piston plate 322 and enhancing a detection effect.

As shown in fig. 5, the sealing assembly 21 includes a flexible sealing member 211, the flexible sealing member 211 is composed of a set of annular structures whose inner edge and outer edge are turned upwards and deformed, and the turned-up inner edge and outer edge of the flexible sealing member 211 are connected to the bottom of the sound-restraining cover 2, and a set of partition areas are formed inside the flexible sealing member 211 after the inner edge and outer edge are turned upwards and are changed adaptively along with the deformation of the flexible sealing member 211.

As shown in fig. 5, the sealing assembly 21 further includes an outer slip ring 212, the outer slip ring 212 is slidably mounted outside the sound-collecting cover 2, the bottom end of the outer slip ring 212 and the bottom end of the sound-collecting cover 2 are both provided with a slot 213 for engaging the flexible sealing member 211, the outer edge of the flexible sealing member 211 is turned up to be fixedly engaged with the slot 213 at the bottom of the outer slip ring 212, the inner edge of the outer slip ring 212 is turned up to be fixedly engaged with the slot 213 at the bottom of the sound-collecting cover 2, and further, when the flexible sealing member 211 is mounted, the size of the isolation region in the flexible sealing member 211 can be changed by using the up-and-down movement of the outer slip ring 212 relative to the sound-collecting cover 2, so as to further adapt to the curved surface condition to which the flexible sealing member 211 is attached, as shown in fig. 3 and fig. 5, the flexible sealing member 211 is adapted to different curved surface conditions, and the height of the outer slip ring 212 relative to the sealing assembly 21 is also different, but can be tightly attached to the paper basin, so as to ensure the sealing effect.

As shown in fig. 3, an elastic member is installed between the top of the outer slip ring 212 and the sound-restraining shield 2, the elastic member pushes the outer slip ring 212 to move downward away from the sound-restraining shield 2, and the elastic member is a pressure spring, so that when the flexible sealing member 211 is not under pressure, the outer slip ring 212 extends downward sufficiently, and at this time, the partition area in the flexible sealing member 211 is the smallest, and is suitable for sealing on a relatively flat inner wall of a cone, and when the sound-restraining shield 2 moves downward, and the outer slip ring 212 is supported by the cone, the sound-restraining shield 2 moves downward relative to 2120, so that the partition area range inside the flexible sealing member 211 can be enlarged, the variability range of the contact surface between the flexible sealing member 211 and the cone can be enlarged, and the sealing effect and the adaptability of the flexible sealing member 211 can be improved.

In this embodiment, the implementation scenario specifically includes: by arranging the lifting of the sound restraining cover 2 to be in butt joint with the loudspeaker, arranging the vibration structure 32 in the mounting cover 31, and arranging the vibration coil 33 above the vibration structure 32, in actual use, the sound restraining cover 2 is controlled to move downwards to be close to the loudspeaker on the detection platform 1 and is tightly attached to a cone in the loudspeaker through the sealing component 21, the loudspeaker is controlled to play sound, even if the cone in the loudspeaker vibrates, and then the air sealed in the sound restraining cover 2 is subjected to sound wave conduction under the shielding of the sound restraining cover 2, namely the vibration of the cone drives the air in the sound restraining cover 2 to vibrate, so as to drive the vibration structure 32 to vibrate and enable the vibration coil 33 to vibrate in the magnetic ring 34, the vibration coil 33 forms a current for detection, namely, the working test of the detected loudspeaker can be carried out by checking the change condition of the current, the sealing component 21 is sealed with the cone, the sound wave generated by the loudspeaker can be prevented from diffusing, the influence of external sound can be avoided, the sound wave can be transmitted to the vibration detector 3 strongly under the concentration of the sound beam cover 2, meanwhile, the sound wave transmission main body is air, if the cone has a gap, air leakage can be caused when the cone vibrates, the transmission of vibration transmission of the air is influenced, and further the current change of the vibration coil 33 is influenced, so that the detection precision of equipment can be fully improved, and the detection efficiency of the equipment is improved;

the inner edge and the outer edge of the flexible sealing element 211 are turned upwards to be connected with the sound restraining cover 2 and the outer sliding ring 212, so that a partition area can be formed inside the flexible sealing element 211, the elastic force of the flexible sealing element 211 and the elastic force of the elastic element are assisted, the outer sliding ring 212 can move up and down relative to the sound restraining cover 2, the size of the partition area in the flexible sealing element 211 is changed in a self-adaptive mode, the curved surface condition attached by the flexible sealing element 211 can be further adapted, the flexible sealing element 211 can also be deformed in an adaptive mode when being in contact with a cone, the flexible sealing element is tightly attached to the inner wall of the cone, effective sealing is achieved, and the flexible sealing element can automatically adapt to the inner wall of the cone according to the fact that the inner wall of the cone is convex or not, and effective sealing and separation is achieved.

And finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.

Claims (10)

1. The utility model provides a testing arrangement is used in stereo set processing, is including examining test table (1) and beam sound cover (2), it is provided with speaker support piece (4) on test table (1) to examine, examine test table (1) and carry out fixed bearing, its characterized in that to the speaker through speaker support piece (4): restraint sound cover (2) is in the top vertical motion who detects platform (1), the internally mounted of restraint sound cover (2) has vibrations detector (3), vibrations detector (3) are including installation cover (31), the internally mounted of installation cover (31) has vibrations structure (32), vibrations coil (33) are installed to the top of vibrations structure (32), fixed mounting has magnetic ring (34) in installation cover (31), vibrations coil (33) extend to in the inboard region of magnetic ring (34), restraint sound cover (2) move down and are close to the speaker on detecting platform (1) to hug closely through seal assembly (21) and the cone in the speaker, vibrations detector (3) are through driving vibrations structure (32) and produce vibrations when the cone shakes, and make vibrations coil (33) produce vibrations in vibration formation and be used for the electric current that detects.

2. The acoustic machining test apparatus according to claim 1, wherein: detect one side fixedly connected with mounting bracket (11) of platform (1), the top fixed mounting of mounting bracket (11) has lift driver (12), the bottom and the beam sound cover (2) fixed connection of lift driver (12), lift driver (12) drive beam sound cover (2) are at the vertical up-and-down motion in the top of detecting platform (1).

3. The sound processing test apparatus according to claim 1, wherein: the loudspeaker supporting piece (4) is a conveying belt (41), the conveying belt (41) is driven by a shaft roller, the upper portion of the conveying belt (41) slides along the surface of the detection table (1), and a loudspeaker clamping groove (42) for clamping and supporting the loudspeaker is arranged in the conveying belt (41).

4. The acoustic machining test apparatus according to claim 1, wherein: the inner cavity of the sound-restraining cover (2) is a conical cavity, and the mounting cover (31) is mounted at the top of the conical cavity of the sound-restraining cover (2).

5. The acoustic machining test apparatus according to claim 1, wherein: the detection table (1) is internally provided with a loudspeaker power connection device (13), the loudspeaker power connection device (13) is provided with a contact which is matched with a contact used for installing an electric wire at the bottom of the loudspeaker, the loudspeaker power connection device (13) is connected with a loudspeaker playing controller, and the loudspeaker power connection device (13) is driven by an air cylinder to lift and slide in the detection table (1).

6. The sound processing test apparatus according to claim 1, wherein: the vibration structure (32) is a vibration film (321), the vibration film (321) is an elastic component, the edge of the vibration film (321) is fixedly connected with the mounting cover (31), the middle of the vibration film (321) is convexly arranged, and the vibration coil (33) is fixedly mounted at the top of the vibration film (321).

7. The acoustic machining test apparatus according to claim 1, wherein: the utility model discloses a loudspeaker cone vibration device, including vibrations structure (32), piston piece (322), just the edge of piston piece (322) and the inner wall laminating of installation cover (31), vibrations coil (33) fixed mounting is in the top of piston piece (322), be provided with elastic support spare (323) between piston piece (322) and installation cover (31), elastic support spare (323) support piston piece (322) vibrations when the speaker cone vibrations.

8. The test apparatus for acoustic processing according to claim 6 or 7, wherein: the sealing assembly (21) comprises a flexible sealing element (211), the flexible sealing element (211) is composed of a group of annular structures with inner edges and outer edges turned upwards to deform, the inner edges and the outer edges turned upwards of the flexible sealing element (211) are connected to the bottom of the sound restraining cover (2), and a group of partition areas are formed on the inner sides of the inner edges and the outer edges of the flexible sealing element (211) after being turned upwards.

9. The sound processing test apparatus according to claim 8, wherein: the sealing assembly (21) further comprises an outer sliding ring (212), the outer sliding ring (212) is slidably mounted outside the sound restraining cover (2), clamping grooves (213) used for clamping the flexible sealing element (211) are formed in the bottom end of the outer sliding ring (212) and the bottom end of the sound restraining cover (2), the outer edge of the flexible sealing element (211) is upwards turned to be fixedly clamped with the clamping grooves (213) in the bottom of the outer sliding ring (212), and the inner edge of the outer sliding ring (212) is upwards turned to be fixedly clamped with the clamping grooves (213) in the bottom of the sound restraining cover (2).

10. The acoustic machining test apparatus according to claim 9, wherein: an elastic piece is arranged between the top of the outer sliding ring (212) and the sound-restraining cover (2), and the elastic piece pushes the outer sliding ring (212) to move downwards away from the sound-restraining cover (2).

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