《声学基础》习题答案

说明：  用于分析两个信号的常相干性，显示互谱函数，显示相干频谱。(It is used to analyze the constant coherence of two signals, display cross-spectral function and coherent spectrum.)

说明：  基于matlab中simulink模块箱的双向dcdc仿真程序(Simulation program of bidirectional dcdcdc based on Simulink module box in MATLAB)

说明：  可以通过该代码实现，查找文件关键抬头信息(This code can be used to find the key header information of the file.)

用容积卡尔曼滤波的方法，对电动汽车无线充电的负荷进行预测。(The load of the wireless charging of electric vehicles is forecasted by volume Calman filtering.)

说明：  新中大软件a3维护工具，维护a3的工具，反年结，操作员权限管理等等(New CUHK software A3 maintenance tools, A3 maintenance tools, anti-year closure, operator rights management and so on)

说明：  汽车bai的7自由度模型du一般是在设计汽车悬架时用zhi到，1/4悬架时2自由度模型，包括簧上部分的dao垂直运动和簧下部分的垂直运动，半车悬架是4自由度模型，整车用7自由度模型。考虑汽车悬架作用，这车车身有三个自由度，分别是车体的Z轴上下运动，沿X轴和Y轴的转动。对于空间刚体6个自由度中的其他3个自由度，2个平动和转动与悬架系统无关，所以没有考虑。上述3个车身自由度加上4个悬架的簧下部分(主要是轮胎的上下跳动)，一共是7个自由度。(The 7-DOF model Du of automobile Bai is generally a 2-DOF model when designing automobile suspension, including the vertical movement of Dao on the spring part and the vertical movement of the under spring part. The half car suspension is a 4-DOF model, and the whole car is a 7-DOF model. Considering the function of automobile suspension, the car body has three degrees of freedom, which are the up and down movement of Z axis of the car body, and the rotation along X axis and Y axis. For the other three of the six degrees of freedom of the space rigid body, two translation and rotation are independent of the suspension system, so they are not considered. The above three body degrees of freedom plus the four suspension spring parts (mainly the up and down runout of tires), a total of 7 degrees of freedom.)

Nano的XML解析器-the XML parser

飞思卡尔电磁试跑程序，六个传感器，很牛的底文件库，让电磁车飞起来，不一样的感觉，不一样的代码

matlab环境下的窃听信道建模，包括crc校验编码，三种（QPSK,16QAM,64QAM）不同的调制方式仿真，加入扰码增强抗窃听能力。(Matlab environment eavesdropping channel modeling, including the CRC check code, three kinds of (QPSK, 16 qam and 64 qam) different modulation mode simulation, join the scrambler enhanced ability to resist eavesdropping.)

ThreeJS是JavaScript的三维引擎之一，本书可作为其入门学习材料(ThreeJS is one of the three dimensional engines of JavaScript, and this book can be used as an introduction to learning materials.)