| 1. | The disturbance is sound wave, conforming to the laws of acoustic propagation in solids .
这种扰动是种声波，它遵从在固体中声波的传播规律。 |
| 2. | Analysis of the acoustic propagation properties under the sea with normal vibration method
用简正波方法分析声波在海水中的传播特性 |
| 3. | Abstract : based on the wave equation , this paper describes the underwater acoustic propagation by a wave guide model , and computes the model
文摘:通过求解波动方程建立了水声在波导中传播的模型并进行了仿真计算。 |
| 4. | With acoustic propagation being mostly forbidden , the findings of the sonic band gaps can potentially be used to design sound insulation systems
当声波之波传被阻绝于声子晶体之外时，这样的声子晶体设计将可用来当作声音的频障设计。 |
| 5. | Underwater - radio buoy system for use as obtaining the ocean ' s acoustical parameters is primary for investigating ocean acoustic condition , obtaining and recording acoustic propagation experimentation data
海洋环境参数获取浮标监测系统主要用于海洋水声环境的综合考察，获取和记录水声传播试验数据。 |
| 6. | In the study of environment model - based processing , the thesis presents a signal enhancement method based on combination of the ocean acoustic propagation , measurement system and noise models . furthermore , a signal enhancement algorithm is developed on the basis of the model - based identifer ( mbid ) implemented by the the augmented gauss - markov process and corrsponding extended kalman filter
本文通过了对模基信号处理实现信号增强的理论研究，提出了一种利用传播模型、噪声模型和阵测量模型、并注重环境信息来实现水声信号增强的方法，继而实现了基于增广高斯?马尔可夫过程和相应的扩展卡尔曼滤波联合的模基辨识器的信号增强算法。 |
| 7. | The underwater - radio buoy for use as obtaining the ocean ' s acoustical parameters , applied for synthetic experimentations that seeing about ocean underwater acoustic environment , can obtain and memorize the data for all kind of underwater acoustic experimentations , for example , acoustic propagation , reverberation , ocean ' s noise etc . the system can not only reduce requires in quantity of using ships and scales in military strength equipment but also keep away from ships environments , reduce background noise and increase the quality of the gathered data
海洋环境参数获取浮标监测系统用于海洋水声环境综合考察试验中，获取和记录水声传播试验数据。该系统不但可以减小参试舰船数量要求，降低兵力配备规模，而且可以远离舰船环境，降低背景噪声，提高所采集数据的质量。因此，浮标的研制对于保证未来海试完成既定试验目标、顺利完成试验项目具有重要意义。 |
| 8. | We regard every layer of grain as a lot of helmholtz resonators in parallel , and regard different layer of grains as the paralleling resonators in series . the grain is a combined resonator in series and parallel . based biot ' s theory of acoustic propagation in porous media this paper applies johnson ' s model to grain media
一定厚度的粮食可看作是一种组合式共振吸声结构，每层认为由许多个单独亥姆霍兹共振腔并联而成，而层与层的共振腔为串联关系，表现为共振性吸收，出现了共振吸收峰。 |
