Abstract: Aiming at the vocalization phenomenon of a bottle with a neck in the process of water injection, the influence of geometrical parameters of the bottle on its vocalization frequency is investigated. The container in the experiment is equivalent to Helmholtz resonance cavity. The relationship between the frequency and the geometric parameters of the water bottle with a neck is obtained by using Helmholtz resonance system theory and verified by experiments. In the experiment, Adobe Audition CS6 is used to sample the recorded sound. The influence of the change of geometric parameters on the sound frequency is explored by controlling the variables. The obtained data is sorted out and analyzed. The experimental results show that the shorter the neck length of the bottle and the larger the cervical cross-sectional area, the higher the sound frequency. The change of the shape has no effect on the sound frequency. The theory is in well agreement with the experiment and the sound phenomenon of bottle in the process of water injection can be well explained by Helmholtz resonance system.

Key words:  Helmholtz resonance cavity, sound frequency, water injection bottle, geometric parameter