计算机辅助测量声速的设计研究

On the Sound Speed Measurement Based on the Computer Aid

通过用示波器和计算机进行共振干涉法(驻波法)测量声速的比较,证明用计算机代替示波器进行测量声音速度的实验不但是可行的,而且还有其独特的优点。首先,多用途的计算机比较普及,操作简便,而示波器昂贵而且操作复杂,对于刚刚进入大学一年级的新生来说,一般很难准确操作。其次,计算机测量声速可以很明显地找到各个共振点,并且不受调整时间的限制。

Compared with an oscilloscope, the experiment, in which the resonance interference method is used to measure the speed of sound with a computer aid, is not only feasible, but also has its unique advantages. First of all, the multipurpose computer is relatively popular and easy to operate, while the oscilloscope is expensive and complicated to be operated by the freshmen of a college. Secondly, each resonance point can be found clearly if the speed of sound is measured with a computer aid, and the experiment is not limited by time.