Abstract: A simple set is designed to study the resonance of air column and to measure the sound speed. Because

of the limitation of the simple equipment used in the experiment，the air column is short and thick，so it is

necessary to consider the endeffect caused by the acoustic radiation of the orifice during the resonance. The experiment

is easy to be implemented，and the data processing is helpful for training students’ability of mathematical

modeling，data mining and extraction.

Key words: air column resonance, sound speed, end correction