Research on the relationship between Bangdi frequency and flute hole

Aiming at the intonation problem in the production process of Bangdi, the structure of Bangdi is modeled and analyzed by using the method of electric-acoustic analogy, and the equivalent circuit diagram and spectrum diagram corresponding to each pitch are obtained. The relationship between pitch frequency and structural parameters of Bangdi is further explored. It is found that pitch frequency increases when the aperture of flute hole increases, and the simulation experiment proves that the pitch frequency can be adjusted by adjusting the aperture of tone hole in actual production. Compared with the formula method, the experimental results obtained by the acoustic-electric analogy method are closer to the theoretical value of pitch frequency, and the accuracy of pitch frequency is no less than 99.09%. Therefore, it can be considered that the method is suitable for the study of the acoustic characteristics of Bangdi.