기능

• The sound will sound when you swing the pipe.
• Ideal for experimenting with open basic tubes and harmonics.
• In addition, the subjects of learning can be expanded to include basic and double vibration of sound, wavelength, frequency, etc.
• Depending on how fast you swing it, you can change the overtone, triharmonic ・・・ quadruharmonic, etc. In addition, you can change the pitch of the pipe by cutting it with scissors, etc., so you can easily experiment with the relationship between the length of the air column and the fundamental frequency.