我们对音调的感觉,客观上决定于声源的振动频率.频率越大,音调越高;频率越小,音调越低.在高中物理课上,一般通过话筒用示波器来描绘不同频率的音叉、琴弦的振动图像.由于示波器的结构复杂,而在教学示波管原理时一般只能用挂图的形式加以讲解.学生往往感到抽象,难以将各按钮的调 Our perception of tones is objectively determined by the vibration frequency of the sound source. The higher the frequency, the higher the pitch; the lower the frequency, the lower the pitch. In the high school physics class, the oscilloscope is usually used to depict the tuning forks of different frequencies. String vibration image. Due to the complex structure of the oscilloscope, the teaching principle of the oscilloscope can only be explained in the form of a flipchart. Students often feel abstract and difficult to adjust the buttons.