Tone, amplitude and timbre visual demonstration device and demonstration method thereof

Abstract

A tone, amplitude and timbre visual demonstration device comprises a box body and a cover body, and three independent experiment areas, namely a first experiment area, a second experiment area and a third experiment area, are designed in the box body; a rubber hammer, a first metal tuning fork and a wooden pipe flute are arranged in the first experiment area; a second metal tuning fork and a tool box are installed in the second experiment area, and visualized demonstration of loudness and amplitude is carried out in the second experiment area; a rechargeable display with phyphox software and a vibration demonstration assembly are installed in the third experiment area, and the rechargeable display is used for displaying a sound oscillogram of the sound. A physical experiment and phyphox software are combined to display an oscillogram of sound, students can visually see waveform changes of the sound with different frequencies, amplitudes and timbres, the understanding and memory of sound characteristics are further deepened, the multi-dimensional demonstration function of the sound is creatively fused in the technology, and the sound characteristic demonstration effect is improved. In addition, visualization of sound phenomena and cultivation of autonomous exploration ability of students are realized in teaching application.

Description

Technical Field

[0001] The invention relates to a tone, amplitude and timbre visualization demonstration device and a demonstration method thereof. Background Art

[0002] In current sound teaching, traditional teaching methods often fail to intuitively demonstrate the characteristics of sound, especially in the lack of effective tools for demonstrations of pitch, loudness, and timbre, making it difficult for students to intuitively understand the physical characteristics of sound through their senses. In the field of visual demonstration of sound, the current common teaching methods mainly rely on traditional physical experimental instruments, such as oscilloscopes and acoustic wave sensors. These instruments help students understand the characteristics of sound by converting sound signals into visual waveforms. However, this method usually requires more professional equipment and has high technical requirements for operators, which limits its widespread application in ordinary teaching environments.

[0003] There are some bottlenecks in conducting sound visualization demonstration based on existing technologies:

[0004] a) Single demonstration effect - Most existing sound demonstration tools have a single function and can usually only display one aspect of the sound, such as frequency or amplitude. It is difficult to comprehensively demonstrate the multiple characteristics of the sound (pitch, loudness, timbre, etc.), which leads to students' overall understanding of the sound being relatively one-sided.

[0005] b) Complex equipment operation - Current sound demonstration equipment often requires professional personnel to operate, and the equipment operation is complex, especially when it is necessary to combine multiple devices (such as oscilloscopes, tuning forks, etc.) for demonstration, which is not conducive to teachers' flexible use in the classroom.

[0006] c) Poor portability of equipment - Existing sound visualization demonstration equipment is often large in size and heavy in weight, making it difficult to carry and use in different scenarios, and is not suitable for field teaching or multi-classroom demonstration needs.

[0007] d) Insufficient interactivity - Current sound demonstration equipment is usually limited to teacher operation, and it is difficult for students to directly participate in experimental operations or observe demonstration results in real time, which reduces the interactivity of teaching and students' sense of participation. Summary of the invention

[0008] In view of the above, the present invention provides a pitch, amplitude and timbre visualization demonstration device and a demonstration method thereof to solve the problems existing in the above background technology.

[0009] According to one aspect of the present invention, a pitch, amplitude and timbre visualization demonstration device is provided, comprising a box body and a cover body, wherein the cover body is movably connected to the box body, and three independent experimental areas are designed in the box body, namely, a first, a second and a third experimental area; a rubber hammer, a first metal tuning fork with a frequency of 256 Hz, and a woodwind flute are installed in the first experimental area, the first metal tuning fork is suspended at the inner top of the first experimental area, and the woodwind flute and the rubber hammer are fixed in the first experimental area; a second metal tuning fork with a frequency of 512 Hz and a tool box for accommodating a ping-pong ball and a string are installed in the second experimental area, the second metal tuning fork is suspended at the inner top of the second experimental area, and the tool box is fixed in the second experimental area; a visualization demonstration of loudness and amplitude is performed in the second experimental area, and the second metal tuning fork is suspended at the inner top of the second experimental area, and the tool box is fixed in the second experimental area. The metal tuning fork is in contact with a suspended static ping-pong ball, and the second metal tuning fork is struck with different intensities, and the vibration amplitude of the second metal tuning fork is reflected by the height of the ping-pong ball that is bounced, thereby demonstrating the relationship between loudness and amplitude; at the same time, the phyphox software of the rechargeable display records and displays sound waveforms of strikes of different intensities, and the sound waveform of the sound is used to verify the relationship between loudness and amplitude again; a rechargeable display with built-in phyphox software and a vibration demonstration component are installed in the third experimental area, and the rechargeable display is used to display the sound waveform of the sound, and the vibration demonstration component includes a plastic bag, a lens, a speaker, and a laser pen, the plastic bag is set on the inner wall of the third experimental area, the lens is attached to the plastic bag, the laser pen is set to irradiate in the direction of the lens, and the speaker is set in the plastic bag.

[0010] Preferably, the first experimental area is provided with a plurality of first wooden slots for fixing a first metal tuning fork, a woodwind flute, and a rubber hammer.

[0011] Preferably, a second wooden slot for fixing a second metal tuning fork is provided in the second experimental area.

[0012] Preferably, the box body and the cover body are provided with buckles that cooperate with each other for opening and closing, and a handle is provided at one end of the box body.

[0013] A method for visualizing pitch, amplitude and timbre is provided according to the above-mentioned visualization demonstration device. A visualization demonstration of vibration and sound is carried out in the third experimental area. A laser pen is used to illuminate a plastic bag with a lens attached thereto. The reflected light on the lens forms a light spot on the inner wall of the third experimental area. When music is played with a speaker in the plastic bag, the changes in the light spot on the inner wall are observed to intuitively demonstrate that sound is generated by vibration.

[0014] Preferably, a visual demonstration of tone and frequency is performed in the first experimental area and the second experimental area, and the first metal tuning fork and the second metal tuning fork are respectively struck with a rubber hammer, and the sound waveforms of the two strikes are recorded and displayed using the phyphox software of the rechargeable display, and the sound waveforms of the two different frequencies are compared to show the relationship between tone and frequency.

[0015] Preferably, a visual demonstration of loudness and amplitude is carried out in the second experimental area, where the second metal tuning fork is brought into contact with a suspended stationary ping-pong ball, and the second metal tuning fork is struck with different intensities, and the vibration amplitude of the second metal tuning fork is reflected by the height of the ping-pong ball that is bounced, thereby demonstrating the relationship between loudness and amplitude; at the same time, the phyphox software of the rechargeable display records and displays sound waveforms of strikes of different intensities, and the sound waveforms of the sound are used to verify the relationship between loudness and amplitude again.

[0016] Preferably, a visual demonstration of timbre and sound-producing body characteristics is carried out in the first experimental area. By striking the first metal tuning fork and playing the woodwind flute, the phyphox software of the charging display is used to display the sound waveforms of the same tone (C key 1, i.e. do) produced by the first metal tuning fork and the woodwind flute. By comparing the differences in the shapes of the sound waveforms produced by the first metal tuning fork and the woodwind flute, the relationship between timbre and sound-producing body characteristics is demonstrated.

[0017] The beneficial effects of the present invention are:

[0018] 1. Demonstration and understanding of multi-dimensional sound characteristics: The device can demonstrate the different characteristics of pitch, loudness and timbre respectively. By combining physical experiments with the "phyphox" software to display the waveform of sound, students can intuitively see the changes in sound waveforms of different frequencies, amplitudes and timbres, and further deepen their understanding and memory of sound characteristics (such as the relationship between pitch and frequency, the relationship between loudness and amplitude, and the relationship between timbre and the material and structure of the sound-producing body).

[0019] 2. Sound visualization and intuitive teaching effect improvement: Through the self-made sound visualization demonstration device, the generation and propagation process of sound can be intuitively demonstrated, so that students can not only hear the sound, but also perceive the sound through vision. This breaks the traditional stereotype that "sound can only be heard", helps students better understand the relationship between sound and vibration, and livens up the classroom atmosphere.

[0020] 3. Convenience and wide application of teaching resources: The device integrates a variety of sound demonstration teaching aids, which is easy to use and carry and suitable for various teaching scenarios. The display installed with "phyphox" software replaces the traditional oscilloscope, so that every student can participate in the experiment, realize the convenience and full application of teaching resources, and help popularize scientific knowledge and improve teaching quality.

[0021] 4. Cultivation of students' independent research ability: Through experimental demonstrations, students can not only observe sound phenomena, but also explore the characteristics of sound by operating experimental equipment, independently recording and analyzing data. This practical teaching method can effectively cultivate students' hands-on ability and scientific research spirit, and promote students' active participation and active thinking in learning.

[0022] 5. Integrated and modular design: All teaching aids and demonstration tools in the device are cleverly integrated into a box. The teaching aids in each area are fixed by specially designed wooden slots to ensure stability and portability during transportation and use.

[0023] 6. Easy to carry and operate: The box is designed with a movably connected cover and a handle, which is convenient for users to carry during demonstration and transportation. In addition, the buckle design of the device ensures the sealing and safety of the box, so that the entire device can be easily carried like a suitcase, realizing the convenience of single-person operation.

[0024] The device not only innovatively integrates the multi-dimensional demonstration function of sound in technology, but also realizes the visualization of sound phenomena and the cultivation of students' independent research ability in teaching applications, filling the shortcomings of traditional teaching in sound demonstration. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram of the structure of the pitch, amplitude and timbre visualization demonstration device.

[0026] Figure 2 Phyphox software for charging monitors displays sound waveforms showing the relationship between loudness and amplitude.

[0027] Figure 3 The Phyphox software for charging the display shows a sound waveform diagram that shows the relationship between timbre and the characteristics of the sound source.

[0028] Figure 4 Flowchart for sound visualization of pitch, amplitude, and timbre.

[0029] In the figure, 1. box body; 2. first experimental area; 3. second experimental area; 4. third experimental area; 5. first metal tuning fork; 6. woodwind flute; 7. second metal tuning fork; 8. tool box; 9. vibration demonstration component; 10. rechargeable display; 11. rubber hammer; 12. first wooden card slot; 13. second wooden card slot. DETAILED DESCRIPTION

[0030] The present invention is further described below with reference to the accompanying drawings and some embodiments.

[0031] exist Figure 1-Figure 4In the invention, a visual demonstration device for tone, amplitude and timbre comprises a box body 1 and a cover body, wherein the cover body is movably connected to the box body 1, and three independent experimental areas are designed in the box body 1, namely, a first, a second and a third experimental area 4; a rubber hammer 11, a first metal tuning fork 5 with a frequency of 256HZ, and a woodwind flute 6 are installed in the first experimental area 2, the first metal tuning fork 5 is suspended at the inner top of the first experimental area 2, and the woodwind flute 6 and the rubber hammer 11 are fixed in the first experimental area 2; a visual demonstration experiment of timbre and sound-generating body characteristics is carried out in the first experimental area 2, and the first metal tuning fork 5 and the woodwind flute 6 are struck respectively to produce the same tone. The sound of the tune is displayed using the phyphox software of the charging display. The sound waveform of the same tune (C tune 1, i.e. do) produced by the first metal tuning fork 5 and the woodwind flute 6 is displayed, and the sound waveform is recorded. By comparing the difference in the shapes of the sound waveforms produced by the first metal tuning fork 5 and the woodwind flute 6, the relationship between the timbre and the characteristics of the sound-producing body is displayed. The experimental device is innovative, using self-made teaching aids and software to display the sound characteristics. Through demonstration experiments, students can intuitively feel the difference in timbre, understand that timbre is related to the material and structure of the sound-producing body, and know that the waveform shapes of sounds of different timbre are different, which is convenient for all members to participate in experimental observation and strengthen understanding and memory.

[0032] In this embodiment, a second metal tuning fork 7 with a frequency of 512HZ and a tool box 8 for holding a ping-pong ball and a thin rope are installed in the second experimental area 3. The second metal tuning fork 7 is suspended at the inner top of the second experimental area 3, and the tool box 8 is fixed in the second experimental area 3. A visual demonstration experiment of loudness and amplitude is carried out in the second experimental area 3. The experiment prepares to hang a ping-pong ball and use the second metal tuning fork 7 for testing. The second metal tuning fork 7 is brought into contact with the suspended stationary ping-pong ball. By striking the second metal tuning fork 7 with different forces, the vibration amplitude of the second metal tuning fork 7 is reflected by the height of the ping-pong ball being bounced, and the loudness and amplitude are demonstrated. Relationship; when the second metal tuning fork 7 is struck with greater force, the sound of the second metal tuning fork 7 is louder and the ping-pong ball is bounced higher. Students are guided to use experiments to explore the factors that affect loudness. The height at which the ping-pong ball is bounced reflects the vibration amplitude of the second metal tuning fork 7, thereby deriving the relationship between loudness and amplitude. At the same time, the Phyphox software is used to record the sound waveform when the second metal tuning fork 7 is struck with different forces. Experimental observations show that the greater the striking force, the higher the ping-pong ball bounces and the greater the amplitude of the sound waveform. The sound waveform of the sound is used to verify the relationship between loudness and amplitude again, and the conclusion is drawn that loudness is proportional to amplitude.

[0033] In this embodiment, a rechargeable display 10 with built-in phyphox software and a vibration demonstration component 9 are installed in the third experimental area 4. The rechargeable display 10 is used to display a sound waveform diagram of the sound. The vibration demonstration component 9 includes a plastic bag, a lens, a speaker, and a laser pen. The plastic bag is set on the inner wall of the third experimental area 4, and the lens is attached to the plastic bag. The laser pen is set to irradiate in the direction of the lens, and the speaker is set in the plastic bag. When the visualization demonstration experiment of vibration and sound is carried out in the third experimental area 4, the laser pen is irradiated on the plastic bag with the lens, and the reflected light on the lens forms a light spot on the inner wall of the third experimental area 4. When the speaker in the plastic bag plays music, the change of the light spot on the inner wall is observed. The experimental phenomenon shows that the light spot moves with the vibration of the music, proving that sound is generated by vibration. The homemade teaching aids are used to demonstrate that sound is generated by vibration, and students can intuitively feel that sound can be seen, and objective phenomena are used to change students' stereotyped cognition that "sound can only be heard", and the classroom is enlivened.

[0034] In this embodiment, a visualization demonstration experiment of pitch and frequency is carried out in the first experimental area 2 and the second experimental area 3. The experiment uses a first metal tuning fork 5 with a frequency of 256 Hz and a second metal tuning fork 7 with a frequency of 512 Hz. A rubber hammer 11 is used to strike the first metal tuning fork 5 and the second metal tuning fork 7 respectively. The phyphox software of the rechargeable display 10 is used to record and display the sound waveforms of the two strikes. By comparing the sound waveforms of the two different frequencies, it is found that the second metal tuning fork 7 with a higher frequency has a dense waveform and a higher pitch; the first metal tuning fork 5 with a lower frequency has a sparse waveform and a lower pitch, and it is concluded that the pitch is proportional to the frequency. The rechargeable display 10 installed with the phyphox software replaces the traditional oscilloscope, and the invisible sound is visualized, so that students can again derive the relationship between pitch and frequency by comparing the sound waveforms, which is convenient for students to further understand and remember.

[0035] In this embodiment, the first experimental area 2 is provided with a plurality of first wooden slots 12 for fixing the first metal tuning fork 5, the woodwind flute 6, and the rubber hammer 11; the second experimental area 3 is provided with a second wooden slot 13 for fixing the second metal tuning fork 7; the teaching aids in each experimental area are fixed by specially designed wooden slots, thereby ensuring stability and portability during transportation and use.

[0036] In this embodiment, the box body 1 and the cover body are equipped with buckles that cooperate with each other for opening and closing, and a handle is installed at one end of the box body 1; the box body 1 is designed with a movably connected cover body and a handle to facilitate users to carry it during demonstration and transportation. In addition, the buckle design of the device ensures the sealing and safety of the box body 1, so that the entire device can be easily carried like a suitcase, realizing the convenience of single-person operation.

[0037] In this embodiment, the rechargeable display 10 is a common mobile terminal display screen, and is installed with "phyphox" software, which accurately displays the relationship between vibration and sound, the relationship between pitch and frequency, the relationship between loudness and amplitude, and the waveform difference of different timbres, greatly improving the effect of sound teaching and students' understanding ability. In this embodiment, "phyphox" software is a powerful physical experiment analysis software with multiple functional features. First, Phyphox uses built-in sensors such as accelerometers, gyroscopes, magnetometers, barometers, etc. to measure various physical quantities. This enables it to conduct experiments such as speed, acceleration, vibration, magnetic field strength, and measure altitude and ambient temperature. Secondly, Phyphox provides a wealth of experimental functions, including motion sensor experiments, sound experiments, optical experiments, electromagnetic experiments, etc., covering multiple physics fields such as mechanics, acoustics, optics, and electromagnetism. In addition, Phyphox has an intuitive graphical interface that allows students to better understand physical concepts and principles, and also provides simulation functions for a variety of physical experiments to help students deeply understand the principles and operating methods of physical experiments. Phyphox also has powerful data analysis functions, which can help teachers better analyze experimental data and thus better explain physical phenomena and laws. In addition, its operation is simple and intuitive, and even first-time teachers can quickly get started. In summary, Phyphox is not only a feature-rich physics teaching tool, but also an application that can use smartphone sensors to perform a variety of physical experimental measurements. It is suitable for students, teachers and science enthusiasts.

[0038] In the specific implementation of the present invention: a visual demonstration experiment of timbre and sound-generating body characteristics is carried out in the first experimental area 2, the first metal tuning fork 5 and the woodwind flute 6 are struck respectively, the sound waveform of the same tone (C key 1, i.e. do) produced by the first metal tuning fork 5 and the woodwind flute 6 is displayed using the phyphox software of the charging display, and the sound waveform is recorded, and the relationship between timbre and sound-generating body characteristics is displayed by comparing the shape difference of the sound waveform produced by the first metal tuning fork 5 and the woodwind flute 6;

[0039] In the second experimental area 3, a visual demonstration experiment of loudness and amplitude is conducted. The experiment prepares to hang a ping-pong ball and use the second metal tuning fork 7 for testing. The second metal tuning fork 7 is brought into contact with the suspended static ping-pong ball. By striking the second metal tuning fork 7 with different forces, the height of the ping-pong ball bounces to reflect the vibration amplitude of the second metal tuning fork 7, demonstrating the relationship between loudness and amplitude.

[0040] In the third experimental area 4, when conducting a visual demonstration experiment of vibration and sound, a laser pen was used to illuminate a plastic bag with a lens attached. The reflected light from the lens formed a light spot on the inner wall of the third experimental area 4. When the speaker in the plastic bag played music, the changes of the light spot on the inner wall were observed. The experimental phenomenon showed that the light spot moved with the vibration of the music, proving that sound is generated by vibration.

[0041] A visualization demonstration experiment of pitch and frequency is carried out in the first experimental area 2 and the second experimental area 3. The experiment uses a first metal tuning fork 5 with a frequency of 256 Hz and a second metal tuning fork 7 with a frequency of 512 Hz. A rubber hammer 11 is used to strike the first metal tuning fork 5 and the second metal tuning fork 7 respectively. The phyphox software of the rechargeable display 10 is used to record and display the sound waveforms of the two strikes. By comparing the sound waveforms of the two different frequencies, it is found that the second metal tuning fork 7 with a higher frequency has a dense waveform and a higher pitch; the first metal tuning fork 5 with a lower frequency has a sparse waveform and a lower pitch, and it is concluded that the pitch is proportional to the frequency.

[0042] It is worth noting that: in the description of the present invention, the meaning of "multiple" is two or more than two, unless otherwise clearly and specifically defined. In the present invention, unless otherwise clearly stipulated and defined, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; the circuits described in the present invention are all commonly used circuits in the art, and other related components are all existing commonly used components. For ordinary technicians in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0043] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A visual demonstration device for pitch, amplitude and timbre, characterized in that: It comprises a box body and a cover body, wherein the cover body is movably connected to the box body, and three independent experimental areas are designed in the box body, namely, the first, second and third experimental areas; A rubber hammer, a first metal tuning fork with a frequency of 256 Hz, and a woodwind flute are installed in the first experimental area. The first metal tuning fork is suspended on the inner top of the first experimental area, and the woodwind flute and the rubber hammer are fixed in the first experimental area. The second experimental area is equipped with a second metal tuning fork with a frequency of 512HZ and a tool box for holding a ping-pong ball and a string. The second metal tuning fork is suspended on the inner top of the second experimental area, and the tool box is fixed in the second experimental area. A visual demonstration of loudness and amplitude is conducted in the second experimental area. The second metal tuning fork is brought into contact with a suspended static ping-pong ball. The second metal tuning fork is struck with different intensities, and the vibration amplitude of the second metal tuning fork is reflected by the height of the ping-pong ball when it is bounced, thereby demonstrating the relationship between loudness and amplitude. At the same time, the phyphox software of the rechargeable display records and displays the sound waveforms of the strikes with different intensities, and the sound waveforms of the sound are used to verify the relationship between loudness and amplitude again. A rechargeable display with built-in phyphox software and a vibration demonstration component are installed in the third experimental area. The rechargeable display is used to display the sound waveform diagram of the sound. The vibration demonstration component includes a plastic bag, a lens, a speaker, and a laser pen. The plastic bag is set on the inner wall of the third experimental area, the lens is attached to the plastic bag, the laser pen is set to irradiate in the direction of the lens, and the speaker is set in the plastic bag.

2. A pitch, amplitude and timbre visualization demonstration device according to claim 1, characterized in that: The first experimental area is provided with a plurality of first wooden slots for fixing a first metal tuning fork, a woodwind flute, and a rubber hammer.

3. A pitch, amplitude and timbre visualization demonstration device according to claim 2, characterized in that: The second experimental area is provided with a second wooden slot for fixing a second metal tuning fork.

4. A pitch, amplitude and timbre visualization demonstration device according to claim 1, characterized in that: The box body and the cover body are provided with buckles which cooperate with each other for opening and closing, and a handle is provided at one end of the box body.

5. The demonstration method of the pitch, amplitude and timbre visualization demonstration device according to claim 3, characterized in that: A visual demonstration of vibration and sound was carried out in the third experimental area. A laser pen was used to shine on a plastic bag with a lens attached to it. The reflected light from the lens formed a light spot on the inner wall of the third experimental area. When music was played with the speaker in the plastic bag, the changes in the light spot on the inner wall were observed, intuitively demonstrating that sound is produced by vibration.

6. The method according to claim 5, characterized in that: A visual demonstration of pitch and frequency was conducted in the first and second experimental areas. The first and second metal tuning forks were struck respectively with a rubber hammer. The sound waveforms of the two strikes were recorded and displayed using the phyphox software on a rechargeable display. The sound waveforms of the two different frequencies were compared to demonstrate the relationship between pitch and frequency.

7. The method according to claim 5, characterized in that: In the second experimental area, a visual demonstration of loudness and amplitude was carried out. The second metal tuning fork was brought into contact with a suspended stationary ping-pong ball. The second metal tuning fork was struck with different intensities, and the height of the ping-pong ball reflected the vibration amplitude of the second metal tuning fork, demonstrating the relationship between loudness and amplitude. At the same time, the phyphox software of the rechargeable display recorded and displayed sound waveforms of different strikes, and the sound waveforms were used to verify the relationship between loudness and amplitude again.

8. The method according to claim 5, characterized in that: A visual demonstration of timbre and sound-producing body characteristics was conducted in the first experimental area. By striking the first metal tuning fork and playing the woodwind flute, the phyphox software of the charging display was used to display the sound waveforms of the same tone (C 1, i.e. do) produced by the first metal tuning fork and the woodwind flute. By comparing the differences in the shapes of the sound waveforms produced by the first metal tuning fork and the woodwind flute, the relationship between timbre and sound-producing body characteristics was demonstrated.

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