Pure tone test method based on surface sounding music glass

Abstract

The invention relates to a pure tone testing method based on surface sounding music glass, and relates to the technical field of surface sounding music glass testing. The method comprises the following steps: on the basis of data such as size, radian and curvature of the surface sounding music glass, equally dividing a sounding surface of the surface sounding music glass through a grid equally dividing method, and marking a test area; testing the vibration displacement of the plurality of test areas, and recording the vibration displacement of each area; calculating a mean value of the vibration displacement in combination with the vibration displacement of the plurality of test areas, determining the areas with the vibration displacement exceeding the standard in the plurality of test areas, and marking the areas exceeding the standard; and connecting the audio signal scanner, sending sine frequency sweeping signals, respectively testing parameters such as frequency response and distortion of a plurality of standard exceeding areas, evaluating the pure tone performance of the vibration displacement standard exceeding areas, and preliminarily completing the pure tone performance test of the surface sounding music glass. The method has the effect of comprehensively and accurately detecting the pure tone performance of the surface sounding music glass.

Description

Technical Field

[0001] The present application relates to the technical field of surface-sounding music glass testing, and in particular to a pure sound testing method based on surface-sounding music glass. Background Art

[0002] Surface-sounding music glass is a new type of glass that integrates a power drive module on the surface of laminated glass without changing the structure of laminated glass to achieve the function of a speaker, thus forming a surface-sounding glass. It is used in scenes such as television audio, exhibitions, and public spaces. Since surface-sounding music glass is usually transparent, it can not only produce sound, but also maintain the transparent beauty of glass and coordinate with various environments. Surface-sounding music glass adopts a brand-new design and technology, breaking the functional limitations of traditional glass and opening up new areas for the application of glass. After the surface-sounding music glass is produced, it is usually necessary to test its pure sound performance.

[0003] At present, the traditional pure sound test method for loudspeaker boxes is: in a quiet environment, connect the loudspeaker to a signal source device, such as an audio generator or a computer with audio output, etc., and output sinusoidal pure sound signals of different frequencies through the signal source and play them at different volumes. The tester listens carefully with his ears at a suitable position in front of the loudspeaker to determine whether the sound is clear, pure, and whether there is noise, distortion, abnormal vibration sound, etc.; compared with the existing loudspeaker boxes, the surface-sounding music glass belongs to the surface-sounding speaker box, and the plane size of the surface-sounding music glass is much larger than the size of the loudspeaker box. Therefore, when the pure sound test method for loudspeaker boxes is applied to the pure sound test of the surface-sounding music glass, the following problems will arise: the surface-sounding music glass makes sound through surface vibration, and the pure sound detection method of the traditional loudspeaker box cannot fully detect the pure sound performance of the surface-sounding music glass, and the pure sound detection through manual operation is subjective and cannot accurately judge the pure sound performance of the surface-sounding music glass, so it needs to be improved. Summary of the invention

[0004] In order to comprehensively and accurately detect the pure sound performance of surface-sounding music glass, the present application provides a pure sound testing method based on surface-sounding music glass.

[0005] The present application provides a pure sound testing method based on surface sound-emitting music glass, which adopts the following technical solution: A pure sound testing method based on surface sounding music glass comprises the following steps: Based on the data of the size, arc and curvature of the surface sounding music glass, the sounding surface of the surface sounding music glass is divided into equal parts by the grid equal division method, and the test area is marked; Test the vibration displacement of several test areas and record the vibration displacement of each area; Combine the vibration displacements of several test areas, calculate the average value of the vibration displacements, determine the areas in the test areas where the vibration displacements exceed the standard, and mark the areas that exceed the standard; Connect the audio signal scanner and send a sine sweep signal to test the frequency response, distortion and other parameters of several areas where the vibration displacement exceeds the standard. Evaluate the pure tone performance of several areas where the vibration displacement exceeds the standard, and preliminarily complete the pure tone performance test of the surface sounding music glass.

[0006] By adopting the above technical solution, the sounding surface of the surface-sounding music glass is divided into equal parts, so that the areas where the vibration displacement exceeds the standard in the surface-sounding music glass can be accurately located, and multi-faceted pure sound detection can be carried out on the areas where the vibration displacement exceeds the standard to ensure a comprehensive exploration of the pure sound performance of the surface-sounding music glass.

[0007] Preferably, the dividing the sounding surface of the opposite sounding music glass into equal parts includes: dividing the sounding surface of the opposite sounding music glass into 9 equal parts, and marking test area 1, test area 2, test area 3, test area 4, test area 5, test area 6, test area 7, test area 8 and test area 9.

[0008] By adopting the above technical solution, the sound-emitting surface of the sound-emitting musical glass is divided into 9 equal parts, which can ensure the test accuracy of each test area.

[0009] Preferably, the test method for the vibration displacement and the maximum vibration frequency point adopts a laser Doppler vibration measurement method.

[0010] By adopting the above technical solution, the laser Doppler vibration measurement method has the advantages of high resolution, fast measurement speed, and strong anti-interference ability, and can improve the test accuracy of vibration displacement and maximum vibration frequency point.

[0011] Preferably, the parameter range of the sinusoidal swept frequency signal is 20 Hz-20 KHz.

[0012] Preferably, the method further comprises: Test the maximum vibration frequency point of several test areas and record the maximum vibration frequency point of each test area; Combined with the maximum vibration frequency points corresponding to several exceeding-standard areas, under the maximum voltage, a sine wave signal of the maximum vibration frequency point corresponding to the exceeding-standard area is continuously sent to each exceeding-standard area to detect the abnormal sound performance of the exceeding-standard area in the surface sound-emitting music glass.

[0013] Preferably, the method also includes: generating a special WAV waveform file in combination with the vibration characteristics of the surface-sounding music glass, and playing the WAV waveform file in a loop to the surface-sounding music glass under maximum power to listen to the pure sound effect of the entire machine on the surface of the surface-sounding music glass.

[0014] In summary, the present application includes at least one of the following beneficial technical effects: 1. For surface sounding music glass, the grid equal division method is used to divide the test area of ​​the surface sounding music glass, accurately locate the area where the vibration displacement exceeds the standard in the surface sounding music glass, and focus on multi-faceted pure sound testing in the area where the vibration displacement exceeds the standard to ensure a comprehensive exploration of the pure sound performance of the surface sounding music glass; 2. This application adopts the laser Doppler vibration measurement method, which has the advantages of high resolution, fast measurement speed, strong anti-interference, etc., and can improve the test accuracy of vibration displacement and maximum vibration frequency point; 3. Combined with the vibration characteristics of the surface-sounding music glass, a special wav waveform file is generated. By looping the wav waveform file to the surface-sounding music glass, a complete pure sound performance test is performed. Compared with the manual listening test, the test result is more accurate, which helps to ensure the performance stability of the surface-sounding music glass after mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a flow chart of a pure sound detection method based on surface-sounding music glass according to an embodiment of the present application. DETAILED DESCRIPTION

[0016] The following is combined with Figure 1 This application is described in further detail.

[0017] The present application embodiment discloses a pure sound test method based on surface sound-emitting music glass. Figure 1 , including the following steps: S1: Based on the appearance data of the surface sounding music glass, such as size, arc and curvature, the sounding surface of the surface sounding music glass is divided into 9 equal parts by the grid division method, and marked as test area 1, test area 2, test area 3, test area 4, test area 5, test area 6, test area 7, test area 8 and test area 9.

[0018] S2: The vibration displacement and maximum vibration frequency point of 9 test areas are tested by laser Doppler vibration measurement, and the vibration displacement and maximum vibration frequency point of each area are recorded.

[0019] S3: Calculate the average value of the vibration displacement based on the vibration displacement of the nine test areas, determine the areas in the nine test areas where the vibration displacement exceeds the standard, and mark the exceeding standard area 1, exceeding standard area 2, etc.

[0020] The sound-generating principle of surface-sounding musical glass: glass vibrates to produce sound. If the vibration displacement of a certain area of ​​the glass is too large, the glass will not be able to vibrate accurately according to the normal audio signal, which will distort the sound emitted, resulting in sound distortion or noise.

[0021] S4: Connect the audio signal scanner and send a 20Hz-20KHz sine sweep signal to test the frequency response, distortion and other parameters of exceeding standard area 1, exceeding standard area 2, etc. respectively, evaluate the pure sound performance of exceeding standard area 1, exceeding standard area 2, etc., and preliminarily complete the pure sound performance test of the surface sounding music glass.

[0022] S5: Combined with the maximum vibration frequency points corresponding to several exceeding-standard areas, under the maximum voltage, continuously send a sine wave signal of the maximum vibration frequency point corresponding to each exceeding-standard area to detect the abnormal sound performance of the exceeding-standard area in the surface sound-emitting music glass.

[0023] S6: Combined with the vibration characteristics of the surface sounding music glass, a special WAV waveform file is generated. Under the condition of maximum power, the WAV waveform file is played to the surface sounding music glass in a loop to listen to the pure sound effect of the whole machine on the surface of the surface sounding music glass.

[0024] The implementation principle of a pure tone testing method based on surface-sounding music glass in an embodiment of the present application is as follows: for the surface-sounding music glass, a grid equal division method is adopted to divide the test area of ​​the surface-sounding music glass, accurately locate the area where the vibration displacement in the surface-sounding music glass exceeds the standard, and focus on conducting multi-faceted pure tone detection on the area where the vibration displacement exceeds the standard, to ensure a comprehensive exploration of the pure tone performance of the surface-sounding music glass.

[0025] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pure tone testing method based on surface sounding music glass, characterized in that: The steps include: Based on the data of the size, arc and curvature of the surface sounding music glass, the sounding surface of the surface sounding music glass is divided into equal parts by the grid equal division method, and the test area is marked; Test the vibration displacement of several test areas and record the vibration displacement of each area; Combine the vibration displacements of several test areas, calculate the average value of the vibration displacements, determine the areas in the test areas where the vibration displacements exceed the standard, and mark the areas that exceed the standard; Connect the audio signal scanner and send a sine sweep signal to test the frequency response, distortion and other parameters of several areas where the vibration displacement exceeds the standard. Evaluate the pure tone performance of several areas where the vibration displacement exceeds the standard, and preliminarily complete the pure tone performance test of the surface sounding music glass.

2. A pure tone testing method based on surface sound-emitting music glass according to claim 1, characterized in that: The dividing the sounding surface of the opposite sounding music glass into equal parts includes: dividing the sounding surface of the opposite sounding music glass into 9 equal parts, and marking test area 1, test area 2, test area 3, test area 4, test area 5, test area 6, test area 7, test area 8 and test area 9.

3. A pure tone testing method based on surface sound-emitting music glass according to claim 1, characterized in that: The testing method of the vibration displacement and the maximum vibration frequency point adopts the laser Doppler vibration measurement method.

4. A pure tone testing method based on surface sound-emitting music glass according to claim 1, characterized in that: The parameter range of the sinusoidal sweep frequency signal is 20 Hz-20 KHz.

5. The pure tone testing method based on surface sound-emitting music glass according to claim 1, characterized in that: The method further comprises: Test the maximum vibration frequency point of several test areas and record the maximum vibration frequency point of each test area; Combined with the maximum vibration frequency points corresponding to several exceeding-standard areas, under the maximum voltage, a sine wave signal of the maximum vibration frequency point corresponding to the exceeding-standard area is continuously sent to each exceeding-standard area to detect the abnormal sound performance of the exceeding-standard area in the surface sound-emitting music glass.

6. A pure tone testing method based on surface sound-emitting music glass according to claim 5, characterized in that: The method also includes: generating a special WAV waveform file in combination with the vibration characteristics of the surface sound-emitting music glass, and playing the WAV waveform file to the surface sound-emitting music glass in a loop under maximum power to listen to the pure sound effect of the entire machine on the surface of the surface sound-emitting music glass.

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