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本文采用DIS数字化信息系统对声音的产生及声音的特性进行了研究.在探究“声音是由物体振动产生的”过程中,除了运用尺子振动实验外,还利用音叉与声音传感器相结合的实验,进一步探究“振动”的概念,从而理解声音的产生.在按照初中物理教材的实验安排,把音叉发出的声音信号输入计算机的基础上,本文做了一个改进,选择高脚杯替代音叉,改变高脚杯的音调,从而得出不同频率的波形图.除此之外,本文在探究响度的影响因素也利用了DIS数字化信息系统,实验结果表明,DIS实验系统的应用既提高了实验的直观性、可靠性,同时也增加了实验的有趣性.
In this paper, we use DIS digital information system to study the generation of sound and the characteristics of sound.In the process of exploring “the sound is generated by the vibration of objects”, in addition to using the ruler vibration experiment, we also use the tuning fork and the sound sensor Experiment, to further explore the concept of “vibration”, so as to understand the generation of sound.According to the experimental arrangement of junior high school physics textbooks, the sound signal from the tuning fork is input to the computer based on the improvement of this article, the choice of goblet replacement Tuning fork, change the tone of the goblet, resulting in different frequency waveform.In addition, this paper explores the influencing factors of loudness also use the DIS digital information system, the experimental results show that the application of DIS experimental system not only increased Experimental intuitive, reliability, but also increased the fun of the experiment.