带颈注水瓶几何参数对其发声频率的影响

Influence of geometrical parameters of water bottle with a neck on its vocalization frequency

针对带颈瓶子在注水过程中的发声现象,本文探究了带颈瓶子的几何参数对其发声频率的影响.将实验中的容器等效为亥姆霍兹共振腔体,并利用亥姆霍兹共振系统理论得出频率与该带颈注水瓶几何参数的关系,并通过实验进行验证.实验中采用Adobe Audition CS6对录制的声音进行采样,用控制变量的方法依次探究几何参数的改变对声音频率的影响,对获得的数据进行整理分析,实验结果显示瓶子的颈长越短,颈截面积越大,声音频率越高,形状的变化对声音频率无影响.理论和实验吻合很好,利用亥姆霍兹共振系统可以很好地解释注水过程中瓶子的发声现象.

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.