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The first part is the explanation of nouns.
Some terms such as sound, sound wave, sound generation, sound propagation, sound medium, sound speed and noise are explained.
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At first, there was some acoustics in our nature around our lives. We can perceive the world by listening, or praise an autumn. We can express our love by perceiving sound, imagine the beauty of scenery by perceiving sound, or capture the beauty of emotion. So how do we feel the beauty of sound in practice?
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The third part tells the process of some sound exercises and sound experiments! This part is a scientific experiment that can be cited!
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The fourth part tells how the sound spreads and how the sound passes through obstacles! Describe the propagation principle of sound waves! Some models of sound wave propagation principle can be designed.
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The fifth part is how the sound is perceived by our nerves when it enters the auricle of our ear canal. Let's talk about the internal processing of sound in the body.