Device and system for testing friction noise of handheld moving coil microphone

Abstract

The embodiment of the utility model discloses a testing device and system for friction noise of a handheld moving coil microphone, and the device comprises a testing main body, the testing main body comprises a testing part and a stabilizing part, and the side surface of the testing main body is transversely provided with a handheld control rod; the testing part comprises a fixed outer ring, and a rubber ring is arranged in the fixed outer ring; the stabilizing part comprises a balancing weight connected to the fixed outer ring through a long bolt, and the balancing weight is arranged on the opposite side of the rubber ring. According to the testing device, the rubber ring is arranged to simulate a human hand, the external part of the handheld moving-coil microphone is directly contacted when the testing device is used, so that the noise generated by friction in the using process of the handheld microphone is simulated, the structure is simple, the noise is convenient to use and collect, and standardized collection can be formed; and multi-dimensional evaluation analysis is carried out on the friction noise from the dimensions of noise energy, spectral characteristics and the like to form comprehensive performance indexes.

Description

Technical Field

[0001] This disclosure relates to the field of microphone testing technology, specifically to a testing device and system for friction noise of handheld dynamic microphones. Background Technology

[0002] The information disclosed in this background section is intended only to enhance understanding of the overall background of this disclosure and is not necessarily an admission or implication in any way that such information constitutes related technology that is already known to those skilled in the art.

[0003] In related technologies, handheld dynamic microphones generate mechanical friction noise during actual use due to gripping and operating the microphone. When a user holds or adjusts the microphone, the dynamic contact between the fingers and the housing triggers mechanical vibrations, including sliding, tapping, or changes in force, which are directly converted into broadband noise through the microphone housing, which lacks a buffer structure. The spectral characteristics of this type of noise are affected by multiple factors such as material properties, surface treatment, and grip strength, resulting in significantly different acoustic feedback from different products under the same operating conditions.

[0004] Current testing of friction noise in handheld microphones relies on manufacturer-defined solutions, leading to inconsistencies in surface roughness, force, and contact position, resulting in a lack of comparability in test results. For example, differing definitions of "thumb sliding" among manufacturers can cause significant testing errors. A unified standard for mechanical excitation parameters is needed, such as friction load range, motion trajectory, and contact medium. Existing tests focus only on single indicators, such as equivalent sound pressure level, and cannot comprehensively assess the impact of friction noise on the frequency response curve of audio signals. Therefore, a standardized testing device and system are required for a simpler and more effective method for testing the friction noise of handheld dynamic microphones. Summary of the Invention

[0005] Therefore, this disclosure provides a testing device for friction noise of handheld dynamic microphones, which makes the testing of friction noise of handheld dynamic microphones simpler and more effective, and performs multi-dimensional evaluation and analysis of friction noise from the dimensions of noise energy, spectral characteristics and other dimensions to form a comprehensive performance index.

[0006] To achieve the above objectives, the embodiments of this disclosure provide the following technical solutions:

[0007] In a first aspect of the present disclosure, a testing apparatus for friction noise of a handheld dynamic microphone is provided, comprising a testing body, the testing body including a testing section and a stabilizing section, and a handheld control lever provided laterally on the side of the testing body;

[0008] The testing section includes a fixed outer ring, and a rubber ring is provided inside the fixed outer ring;

[0009] The stabilizing component includes a counterweight connected to the fixed outer ring by long bolts, the counterweight being disposed on the opposite side of the rubber ring.

[0010] Furthermore, the arc length of the rubber ring is less than the half-ring length of the fixed outer ring, and the rubber ring is fixed to the inner side of the fixed outer ring by an adhesive.

[0011] Furthermore, a mounting position is provided at the middle of the side of the fixed outer ring, and the end of the handheld control lever is fixed to the mounting position.

[0012] Furthermore, the end of the handheld control lever is provided with a radially penetrating mounting hole, through which the long bolt is fixed to the counterweight.

[0013] In a second aspect of the embodiments of this disclosure, a testing system is provided, including a testing device and a recording system, and further including the testing apparatus as described above, the testing apparatus being used for testing device friction noise.

[0014] According to the embodiments of this disclosure, the testing device has the following advantages: it includes a testing body, which comprises a testing section and a stabilizing section, and a handheld control lever is laterally provided on the side of the testing body; the testing section includes a fixed outer ring, and a rubber ring is provided inside the fixed outer ring; the stabilizing section includes a counterweight block connected to the fixed outer ring by a long bolt, and the counterweight block is located on the opposite side of the rubber ring. This testing device, by setting a rubber ring to simulate a human hand, directly contacts the outside of a handheld dynamic microphone during use, thus simulating the noise generated by friction during the use of a handheld microphone. Its structure is simple, noise collection is convenient, and it can form standardized data collection. It can also perform multi-dimensional evaluation and analysis of friction noise from dimensions such as noise energy and spectral characteristics to form a comprehensive performance index. Compared with traditional friction noise testing methods, this testing method quantifies and controls the friction force through a counterweight, resulting in stronger variable controllability, higher accuracy, better portability of the testing method, and better reproducibility of the test results. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments or related technologies of this disclosure, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0016] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which this disclosure can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effectiveness and purpose that this disclosure can achieve, should still fall within the scope of the technical content disclosed herein.

[0017] Figure 1 This is a perspective view of a first embodiment of a testing apparatus according to an exemplary embodiment;

[0018] Figure 2 This is a perspective view of a second embodiment of a testing apparatus according to an exemplary embodiment;

[0019] Figure 3 This is a diagram illustrating the usage state of a test apparatus according to an exemplary embodiment;

[0020] Figure 4 A comparison graph of the sound frequency response curves of noise acquisition samples recorded for several samples including the test device of this embodiment.

[0021] In the diagram: 1. Fixed outer ring; 2. Rubber ring; 3. Long bolt; 4. Counterweight; 5. Handheld control lever; 6. Handheld moving coil microphone. Detailed Implementation

[0022] The following specific embodiments illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0023] The terms “upper,” “lower,” “left,” “right,” and “middle” used in this specification are merely for clarity of description and are not intended to limit the scope of this disclosure. Any changes or adjustments to their relative relationships, without substantially altering the technical content, shall also be considered within the scope of this disclosure.

[0024] like Figure 1 As shown, this invention provides a testing device for friction noise of a handheld dynamic microphone. It includes a testing body, which comprises a testing section and a stabilizing section. A handheld control lever 5 is laterally positioned on the side of the testing body. The testing section includes a fixed outer ring 1, with a rubber ring 2 inside. The stabilizing section includes a counterweight 4 connected to the fixed outer ring 1 by a long bolt 3, and the counterweight 4 is positioned on the opposite side of the rubber ring 2.

[0025] This testing device, by setting up a rubber ring to simulate a human hand, directly contacts the outside of the handheld dynamic microphone 6 during use, thus simulating the noise generated by friction during the use of the handheld microphone. Its structure is simple, it is convenient to collect noise, it can form standardized collection, and it can evaluate and analyze friction noise from multiple dimensions such as noise energy and spectral characteristics to form a comprehensive performance index.

[0026] The counterweight 4 is used to increase the overall weight of the device, thereby increasing the pressure control friction force, which is beneficial for collecting friction noise. The outer ring 1 is used to fix the rubber ring 2, and the counterweight 4 is fixed by screws and nuts.

[0027] To better simulate the results and more accurately reproduce the contact area between the finger and the microphone housing, the arc length of the rubber ring 2 is less than the half-ring length of the fixed outer ring 1. The rubber ring 2 is fixed to the inner side of the fixed outer ring 1 with adhesive. The length of the rubber ring needs to ensure that it remains in contact with the surface of the microphone under test during the test. It is recommended that the coverage area be at least more than 1 / 4 of the ring to prevent the surface under test from detaching from the rubber ring during the test.

[0028] The outer ring 1 has a mounting position in the middle of its side, and the end of the handheld control lever 5 is fixed in the mounting position.

[0029] like Figure 2 As shown, this is another embodiment of the testing device. The end of the handheld control lever 5 has a radially penetrating mounting hole, through which a long bolt 3 is fixed to the counterweight 4. Compared with the previous assembly method, this type of assembly concentrates the frictional motion along the axis of the microphone under test, thus reducing the testing error caused by radial frictional motion during operation to a certain extent.

[0030] In a second aspect of the embodiments of this disclosure, a testing system is provided, including a testing device and a recording system, and further including the testing apparatus as described above, the testing apparatus being used for testing device friction noise, the testing apparatus being a handheld dynamic microphone 6.

[0031] During the use of this utility model, such as Figure 3 As shown, the specific test steps are as follows: fix the microphone on the standard test frame (not shown), connect the microphone output to the recording system, set up the friction noise simulation device in the lower middle part of the microphone shell, hold the outer ring directly or through the hand control lever 5, and move the device back and forth at a constant speed along the axial direction of the shell so that the rubber ring 2 contacts the shell and generates friction noise. At the same time, record the noise waveform through the recording system, and use audio signal analysis software to analyze the amplitude and spectrum of the noise.

[0032] Experimental example:

[0033] Based on the aforementioned design of the friction noise simulation device, a test system was built to test and compare the handheld friction noise of five different models of handheld dynamic microphones.

[0034] The noise frequency response curves obtained by processing the noise samples recorded from several different samples are as follows. Figure 4 As shown in Table 1, the calculated effective noise values ​​are as follows. From the effective noise values, sample #3 has the highest friction noise overall, while sample #4 has the lowest. The frequency response curves show that, besides the difference in noise energy, the frequency distribution characteristics of the noise also differ. The noise spectrum trends of the samples are roughly similar, with most of the noise energy concentrated in the low-frequency range below 500Hz. However, in some frequency ranges, such as around 125Hz, samples #1 and #3 exhibit peaks of 8-10dB. Sample #2 has a relatively higher proportion of energy in the low-frequency range below 100Hz, while samples #5 and #4 have a more even distribution of high and low frequency energy.

[0035]

[0036] By designing this testing device, the parameters of each part of the device are controllable, solving the problems of inconsistent friction surface roughness, force, and contact position when testing the friction noise of handheld microphones. At the same time, a method for testing the friction noise performance of dynamic microphones is proposed, which evaluates and analyzes friction noise from multiple dimensions such as noise energy and spectral characteristics, forming a comprehensive performance index.

[0037] Compared to traditional friction noise testing methods, this testing method quantifies and controls friction force through counterweights, resulting in greater controllability of variables, higher accuracy, better portability of the testing method, and better reproducibility of test results.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] Although the present disclosure has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, such modifications or improvements made without departing from the spirit of the present disclosure are all within the scope of protection claimed by the present disclosure.

Claims

1. A testing device for friction noise of a handheld dynamic microphone, characterized in that, The test body includes a test section and a stabilizing section, and a handheld control lever is provided laterally on the side of the test body. The testing section includes a fixed outer ring, and a rubber ring is provided inside the fixed outer ring; The stabilizing component includes a counterweight connected to the fixed outer ring by long bolts, the counterweight being disposed on the opposite side of the rubber ring.

2. The test device for frictional noise of a hand-held moving-coil microphone according to claim 1, wherein The arc length of the rubber ring is less than the half-ring length of the fixed outer ring, and the rubber ring is fixed to the inner side of the fixed outer ring by adhesive.

3. The test device for friction noise of a hand-held moving coil microphone according to claim 1, wherein The fixed outer ring has a mounting position at the middle of its side, and the end of the handheld control lever is fixed to the mounting position.

4. The testing device for friction noise of a handheld dynamic microphone according to claim 1, characterized in that, The end of the handheld control lever is provided with a radially penetrating mounting hole, through which the long bolt is fixed to the counterweight.

5. A testing system, comprising testing equipment and a recording system, characterized in that, It also includes the testing apparatus as described in any one of claims 1-4, the testing apparatus being used for testing equipment friction noise.

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