A method for determining the volume of sound when pressing a popping bead

Abstract

The present invention discloses a method for determining the volume of a bead popping sound, comprising: obtaining, using a microphone, ambient sound information within a first preset time range before the bead is pressed to pop, and obtaining bead popping sound information during the bead popping process, the bead popping sound information including sound information obtained by the microphone within a second preset time range before and after the bead is pressed to pop; processing the bead popping sound information to obtain ambient reference sound information; fitting the ambient reference sound information with noise reduction ambient sound information to obtain a second ambient sound segment; obtaining second bead popping sound information based on the second ambient sound segment and the bead popping sound information, and taking the maximum value of the second bead popping sound information to obtain the volume of the bead popping sound. The present invention can reduce the influence of ambient sound on the volume of the bead popping sound, improve the accuracy of the volume of the bead popping sound, and improve the accuracy of the bead popping quality assessment.

Description

Technical Field

[0001] The present invention relates to the technical field of sound processing, and in particular to a method for determining the volume of a sound produced by pressing a popping bead. Background Art

[0002] In recent years, popping bead technology has been widely used in cigarette production. Popping bead cigarettes refer to cigarettes with a liquid bead in the filter. By manually squeezing the bead, the liquid flows out, thus achieving a more fragrant experience during the smoking process. At present, in the detection of popping beads for cigarettes, force is applied to squeeze the popping beads to make them break, and the pressure value at the time of breakage is recorded, and the pressure, breakage strength and indentation value indicators are calculated. Accurately detecting the size of the popping sound of the popping beads is of great significance for the quality detection of the popping beads. The currently measured value of the popping sound size is 60-80dB. The existing popping bead sound detection device usually obtains the sound of the popping beads in the laboratory. However, the popping sound of the popping beads obtained in the laboratory will be affected by the environmental noise, which affects the accuracy of obtaining the size of the popping bead sound. As a result, it is impossible to accurately judge the sound effect of the popping beads, eliminate unqualified products, and improve the experience of consumers of popping bead cigarettes. Summary of the Invention

[0003] The main purpose of the present invention is to propose a method for determining the size of the sound when pressing a popping bead, aiming to reduce the influence of environmental sound on obtaining the size of the popping bead sound, improve the accuracy of the size of the popping bead sound, and improve the accuracy of the quality judgment of the popping bead.

[0004] To achieve the above-mentioned object, the present invention provides a method for determining the volume of a sound produced by pressing a popping bead. The method is applied to a sound volume determination system, wherein the sound volume determination system includes a microphone. The method comprises the following steps:

[0005] Acquiring, based on the microphone, environmental sound information within a first preset time range before pressing the bead to pop, and acquiring bead popping sound information when pressing the bead to pop, the bead popping sound information includes sound information acquired by the microphone within a second preset time range before pressing the bead to pop and within a second preset time range after pressing the bead to pop;

[0006] Processing the bead popping sound information to obtain environmental reference sound information;

[0007] Fitting the environmental reference sound information with the noise reduction environmental sound information to obtain a second environmental sound segment;

[0008] According to the second environmental sound segment and the bead popping sound information, the second bead popping sound information is obtained, and the maximum value of the second bead popping sound information is taken to obtain the bead popping sound volume.

[0009] Optionally, the step of processing the bead popping sound information to obtain environmental reference sound information includes:

[0010] performing noise reduction processing on the bead popping sound information to obtain noise-reduced bead popping sound information;

[0011] Processing the noise reduction bead popping sound information to obtain pressing period sound information, pressing front section sound information, and pressing back section sound information;

[0012] The pressing period sound information is replaced with no sound information and the pressing period sound information, the pressing front section sound information and the pressing back section sound information are combined in chronological order to obtain the environmental reference sound information.

[0013] Optionally, the step of performing noise reduction processing on the bead popping sound information to obtain noise-reduced bead popping sound information includes:

[0014] Performing Gaussian filtering on the bead popping sound information to filter out information with low probability of occurrence, thereby obtaining Gaussian bead popping sound information;

[0015] The Gaussian bead popping sound information is mean filtered to obtain noise-reduced bead popping sound information.

[0016] Optionally, the pressing period sound information, the pressing front section sound information and the pressing back section sound information are of equal time length and are all of the first time length.

[0017] Optionally, the step of fitting the ambient reference sound information with the ambient sound information to obtain a second ambient sound segment includes:

[0018] Performing noise reduction processing on the ambient sound information to obtain noise-reduced ambient sound information;

[0019] Fitting the environmental reference sound information with the noise reduction environmental sound information to obtain a first environmental sound segment having the same time length as the environmental reference sound information and having the highest similarity to the environmental reference sound information;

[0020] According to the pressing period sound information, the ambient sound segment is intercepted at the positions of the pressing period sound information, the pressing front-end sound information and the pressing back-end sound information to obtain a second ambient sound segment.

[0021] Optionally, the step of performing noise reduction processing on the ambient sound information to obtain noise-reduced ambient sound information includes:

[0022] Performing Gaussian filtering on the ambient sound information to filter out information with low probability of occurrence, thereby obtaining Gaussian ambient sound information;

[0023] The Gaussian ambient sound information is mean filtered to obtain the noise-reduced ambient sound information.

[0024] The present invention processes the bead popping sound information to obtain environmental reference sound information, and fits the environmental reference sound information with the noise reduction environmental sound information, thereby reducing the influence of environmental sound on obtaining the bead popping sound size value, improving the accuracy of the bead popping sound size value, and improving the accuracy of the bead popping quality judgment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a flow chart of an embodiment of a method for determining the volume of a popping bead sound when pressing the bead.

[0026] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0027] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] Reference Figure 1 , Figure 1 Schematic diagram of the flow of the first embodiment of the method for determining the volume of the sound of pressing a popping bead according to the present invention.

[0029] In an embodiment of the present invention, the method for determining the volume of a sound produced by pressing a popping bead is applied to a sound volume determination system. The sound volume determination system includes a microphone and a sound volume determination device. The method for determining the volume of a sound produced by pressing a popping bead includes:

[0030] Step S10, using a microphone to acquire ambient sound information within a first preset time range before the bead is pressed to pop, and acquire bead popping sound information when the bead is pressed to pop. The bead popping sound information includes sound information acquired by the microphone within a second preset time range before the bead is pressed to pop, and within a second preset time range after the bead is pressed to pop.

[0031] In this embodiment, in order to reduce the influence of environmental sound on obtaining the value of the sound size of the popping beads, improve the accuracy of the value of the sound size of the popping beads, and improve the accuracy of the quality judgment of the popping beads, the sound size determination device obtains the environmental sound information within the first preset time range before pressing the popping bead and obtains the popping bead sound information when pressing the popping bead based on the microphone. The popping bead sound information includes the sound information obtained by the microphone within the second preset time range before pressing the popping bead and the second preset time range after pressing the popping bead. The first preset time range is a time range, which can be 30 minutes or 40 minutes. The second preset time range is a time range, which can be 30 seconds or 40 seconds. When detecting the sound of the popping beads, the machine or other equipment will have some regular and repetitive noises. When obtaining the size of the sound of the popping bead when pressing the popping bead, the regular and repetitive noises need to be removed first to reduce the influence of the environmental sound on the detected value.

[0032] Step S20, processing the bead popping sound information to obtain environmental reference sound information;

[0033] In this embodiment, after obtaining the environmental sound information and the bead popping sound information, the sound volume determination device processes the bead popping sound information to obtain the environmental reference sound information.

[0034] Step S20 processes the bead popping sound information to obtain environmental reference sound information, which may include:

[0035] Step S21, performing noise reduction processing on the bead popping sound information to obtain noise-reduced bead popping sound information;

[0036] In this embodiment, after obtaining the bead popping sound information, the sound volume determination device performs noise reduction processing on the bead popping sound information to obtain noise-reduced bead popping sound information.

[0037] Step S21 performs noise reduction processing on the bead popping sound information to obtain noise-reduced bead popping sound information, which may include:

[0038] Step S211, performing Gaussian filtering on the bead popping sound information to filter out information with low probability of occurrence, thereby obtaining Gaussian bead popping sound information;

[0039] In this embodiment, after obtaining the bead popping sound information, the sound volume determination device performs Gaussian filtering on the bead popping sound information to filter out information with a low probability of occurrence, thereby obtaining Gaussian bead popping sound information.

[0040] Step S212: performing Gaussian mean filtering on the popping bead sound information to obtain noise-reduced popping bead sound information.

[0041] In this embodiment, after obtaining the Gaussian popping bead sound information, the sound volume determination device performs mean filtering on the Gaussian popping bead sound information to obtain the noise-reduced popping bead sound information.

[0042] Step S22, processing the noise reduction bead popping sound information to obtain the pressing period sound information, the pressing front section sound information and the pressing back section sound information;

[0043] In this embodiment, after obtaining the noise reduction bead sound information, the sound volume determination device processes the noise reduction bead sound information to obtain pressing period sound information, pre-pressing period sound information, and post-pressing period sound information. The pressing period sound information, pre-pressing period sound information, and post-pressing period sound information are of equal duration and are all of the first duration. The pressing period sound information refers to the sound information during the pressing of the bead; the pre-pressing period sound information refers to the sound information before the bead is pressed; and the post-pressing period sound information refers to the sound information after the bead is pressed.

[0044] Step S23: replace the pressing period sound information with no sound information and combine the pressing period sound information, the pressing front section sound information and the pressing back section sound information in chronological order to obtain the environmental reference sound information.

[0045] In this embodiment, after acquiring the pressing period sound information, the pre-pressing sound information, and the post-pressing sound information, the sound volume determination device replaces the pressing period sound information with no sound information and combines the pressing period sound information, the pre-pressing sound information, and the post-pressing sound information in chronological order to obtain the environmental reference sound information. Specifically, the middle section of the environmental reference sound information is devoid of any sound information, with the sound wave forming a straight line. This means that all sound information acquired during the pressing period sound information is erased.

[0046] Step S30, fitting the ambient reference sound information with the ambient sound information to obtain a second ambient sound segment;

[0047] In this embodiment, after obtaining the environmental reference sound information, the sound volume determination device fits the environmental reference sound information with the environmental sound information to obtain a second environmental sound segment.

[0048] Step S30, in which the ambient reference sound information is fitted with the ambient sound information to obtain a second ambient sound segment, may include:

[0049] Step S31, performing noise reduction processing on the ambient sound information to obtain noise-reduced ambient sound information;

[0050] In this embodiment, after obtaining the ambient sound information, the sound volume determination device performs noise reduction processing on the ambient sound information to obtain noise-reduced ambient sound information.

[0051] Step S31 performs noise reduction processing on the ambient sound information to obtain noise-reduced ambient sound information, which may include:

[0052] Step S311, performing Gaussian filtering on the ambient sound information to filter out information with low probability of occurrence, thereby obtaining Gaussian ambient sound information;

[0053] In this embodiment, after obtaining the ambient sound information, the sound volume determination device performs Gaussian filtering on the ambient sound information to filter out information with a low probability of occurrence, thereby obtaining Gaussian ambient sound information.

[0054] Step S312: performing mean filtering on the Gaussian ambient sound information to obtain noise-reduced ambient sound information.

[0055] In this embodiment, after obtaining the Gaussian ambient sound information, the sound volume determination device performs mean filtering on the Gaussian ambient sound information to obtain the noise reduction ambient sound information.

[0056] Step S32, fitting the ambient reference sound information with the noise reduction ambient sound information to obtain a first ambient sound segment having the same time length as the ambient reference sound information and having the highest similarity to the ambient reference sound information;

[0057] In this embodiment, after obtaining the environmental reference sound information and the noise reduction environmental sound information, the sound volume determination device fits the environmental reference sound information and the noise reduction environmental sound information to obtain a first environmental sound segment that has the same time length as the environmental reference sound information and has the highest similarity to the environmental reference sound information.

[0058] Step S33 , intercepting an ambient sound segment at the position of the pressing period sound information, the pressing front-end sound information, and the pressing back-end sound information according to the pressing period sound information to obtain a second ambient sound segment.

[0059] In this embodiment, after obtaining the first ambient sound segment, the sound volume determination device intercepts the ambient sound segment at the locations of the pressing period sound information, the pre-pressing sound information, and the post-pressing sound information according to the pressing period sound information to obtain a second ambient sound segment. In other words, the second ambient sound segment is the sound information at one end of the first ambient sound segment.

[0060] Step S40, obtaining second bead popping sound information based on the second environmental sound segment and the bead popping sound information, and taking the maximum value of the second bead popping sound information to obtain the bead popping sound volume;

[0061] In this embodiment, after obtaining the second environmental sound segment, the sound volume determination device obtains the second popping bead sound information based on the second environmental sound segment and the popping bead sound information, and takes the maximum value of the second popping bead sound information to obtain the popping bead sound volume.

[0062] Through the above scheme, this embodiment uses a microphone to capture ambient sound information within a first preset time range before the bead is pressed to pop, as well as capture bead popping sound information during the pressing of the bead. The bead popping sound information includes sound information captured by the microphone within a second preset time range before and after the bead is pressed to pop. The bead popping sound information is processed to obtain ambient reference sound information. The ambient reference sound information is fitted with the noise reduction ambient sound information to obtain a second ambient sound segment. Based on the second ambient sound segment and the bead popping sound information, second bead popping sound information is obtained, and the maximum value of the second bead popping sound information is taken to obtain the bead popping sound level. This reduces the influence of ambient sound on the acquired bead popping sound level value, improves the accuracy of the bead popping sound level value, and improves the accuracy of bead popping quality assessment.

[0063] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or system. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or system comprising the element.

[0064] The serial numbers of the above embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments.

[0065] Through the description of the above embodiments, those skilled in the art can clearly understand that the above embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better embodiment. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for enabling a terminal device (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in each embodiment of the present invention.

[0066] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for determining the volume of the sound of a popping bead, characterized in that: The method for determining the volume of the sound of pressing a popping bead is applied to a sound volume determination system, wherein the sound volume determination system includes a microphone. The method for determining the volume of the sound of pressing a popping bead includes the following steps: Acquiring, based on the microphone, environmental sound information within a first preset time range before pressing the bead to pop, and acquiring bead popping sound information when pressing the bead to pop, the bead popping sound information includes sound information acquired by the microphone within a second preset time range before pressing the bead to pop and within a second preset time range after pressing the bead to pop; Processing the bead popping sound information to obtain environmental reference sound information; Fitting the environmental reference sound information with the noise reduction environmental sound information to obtain a second environmental sound segment; Obtain second bead popping sound information based on the second environmental sound segment and the bead popping sound information, and take the maximum value of the second bead popping sound information to obtain the bead popping sound volume; The step of fitting the environmental reference sound information with the noise reduction environmental sound information to obtain a second environmental sound segment includes: Performing noise reduction processing on the ambient sound information to obtain noise-reduced ambient sound information; Fitting the environmental reference sound information with the noise reduction environmental sound information to obtain a first environmental sound segment having the same time length as the environmental reference sound information and having the highest similarity to the environmental reference sound information; According to the pressing period sound information, the environmental sound segment is intercepted at the positions of the pressing period sound information, the pressing front section sound information and the pressing rear section sound information to obtain a second environmental sound segment.

2. The method for determining the volume of the sound of a popping bead according to claim 1, characterized in that: The step of processing the bead popping sound information to obtain environmental reference sound information includes: performing noise reduction processing on the bead popping sound information to obtain noise-reduced bead popping sound information; Processing the noise reduction bead popping sound information to obtain pressing period sound information, pressing front section sound information, and pressing back section sound information; The pressing period sound information is replaced with no sound information and the pressing period sound information, the pressing front section sound information and the pressing back section sound information are combined in chronological order to obtain the environmental reference sound information.

3. The method for determining the volume of the sound of a popping bead according to claim 2, characterized in that: The step of performing noise reduction processing on the bead popping sound information to obtain noise-reduced bead popping sound information comprises: Performing Gaussian filtering on the bead popping sound information to filter out information with low probability of occurrence, thereby obtaining Gaussian bead popping sound information; The Gaussian bead popping sound information is mean filtered to obtain noise-reduced bead popping sound information.

4. The method for determining the volume of the sound of a popping bead according to claim 3, characterized in that: The time lengths of the pressing period sound information, the pressing front section sound information and the pressing back section sound information are equal and are all the first time length.

5. The method for determining the volume of the sound of a popping bead according to claim 4, characterized in that: The step of performing noise reduction processing on the ambient sound information to obtain noise-reduced ambient sound information includes: Performing Gaussian filtering on the ambient sound information to filter out information with low probability of occurrence, thereby obtaining Gaussian ambient sound information; The Gaussian ambient sound information is mean filtered to obtain the noise-reduced ambient sound information.

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