In this article some acoustic characteristic indices of maximum pink noise sound pressure level, frequency transmission characteristic, sound transmission gain, non-uniformity of sound field and distortions, are recommended. 本文对厅堂扩声系统的最大粉红噪声声压级、传输频率特性、传声增益、声场不均匀度、失真等声学特性指标提出建议。
Why does the maximum of the amplitude of sound pressure minish with the distance between the emitter and the receiver augmenting? 为什么声压振幅极大值随发射器与接收器之间的距离增大而减小?
The critical bub fraction and the bubble fraction which corresponded with the maximum sound pressure are introduced, it concluded that the non linear relation between the resonant bubble fraction and the corresponding sot pressure is present. 引入临界气泡份额和极大声压相应的气泡份额,推断出共振态气泡份额与相应声压之间存在线性关系。
Moreover, the cavitation coefficient that can describe the strength of cavitation is definitude. It has a good consistency with the theoretical maximum sound pressure. 此外,定义了描述空化强弱的空化系数K,并将其与通过理论计算所得的空泡振动最大声压进行比较后发现两者有着较好的一致性。