54.1Introduction 54.2 Polar Dielectrics Roger W.Whatmore 54.3 The Pyroelectric Effect Cranfield University 54.4 Pyroelectric Materials and Their Selection 54.1 Introduction

52.1 Introduction 52.2 Theoretical Background Alexander C. Ehrlich 52.3 Relation to the Electronic Structure-(i) ot >1

50.1 Introduction 50.2 Defining Equations Piezoelectricity and Electrostriction. Electrostriction and V. Sundar and Compliance Matrices Magnitudes and Signs of Electrostrictive R.E. Newnham Coefficients

48.1 Introduction 48.2 Propagation in Solids 48.3 Piezoelectric Excitation Gerald. Farnell 48.4 One-Dimensional Propagation McGill University 48.5Transducers 48.1 Introduction

46.1 Introduction 46.2 Transduction Mechanisms Piezoelectricity Magnetostriction. Electrodynamic. Electrostatic. Magnetic. Hydraulic. Fiber Optic.Parametric Transducers. Carbon Microphones 46.3 Sensitivity and Source Level 46.4 Reciprocity

44.1 Introduction 44.2 The Field equations Low Frequency Fields. Statics Limit 44.3 Numerical Methods C. W. Trowbridge

一、声波透过单层匀质构件的传播 二、双层隔墙 三、门窗和孔隙对墙体隔声的影响 四、隔声间的降噪量 五、隔声罩的降噪量

一、声波的反射、透射、折射和衍射 1、垂直入射声波的反射和透射

一、振动对环境的影响和评价 二、振动控制的基本方法 三、隔振原理 四、隔振设计与计算

一、声场的分类 直达声场:从声源直接到达接受点的直达声 形成的声场。 混响声场:经过房间面壁一次和多次反射后 到达接受点的反射声形成的声场。 扩散声场:房间内声能密度处处相同,而且 在任一受声点上,声波在各个传播方向作无规则 分布的声场。 (扩散声场包含直达声场和混响声场,是由 两声场叠加形成)