MATLAB-drawing

基于“时差法”测量流量：原理在于通过计算超声波顺流传播信号及逆流传播信号之间的时间差来求得管道内流体平均流速并进而得到流量。(Measurement of flow based on the Time difference method)

ms sql queries. implemented simple queries request

说明：  在MATLAB中表示信号的常规格式是向量或者矩阵。本示例中利用randint 函数来产生一个表示二进制数据序列连续值的列向量。其中二进制数据序列的长度（即为列向量中的行数）设置为30,000。 下面的代码同时还绘制了数据序列的杆图（stem plot），用来显示数据的0、1值。你所产生的图可能与次示例中的图有一点不一样，这是因为本示例中应用了随机数。 (Said signal in MATLAB conventional format is a vector or matrix. In this example use randint function to generate a column vector of a sequence of binary data, said successive values. Wherein the length of the binary data sequence (i.e., the number of rows in the column vector) is set to 30,000. The following code sequence of data is also plotted in Fig rod (stem plot), the value 0 is used to display the data. You may have generated the second example of FIG FIG little different, this is because the present example, the application of the random number.)

Field 2 是丹麦理工大学（Technical University of Demark）的J.A.延森（Jorgen Arendt Jenson）开发的一款超声模拟软件，该软件基于线性声场理论， 其最基本概念是空间冲击响应，最早由Tupholme和Stepannishen等提出，空间冲击响应是一个和何置相关的函数，它与换能器上的激励信号卷积，可以得到发射波到焦点的任意一点的声场。换能器接收同波信号相当与发射的逆过程，将空间的反射点作为发射源，与接收换能器的空间冲击响应卷积，从而得到回波信号。(Field 2 is the Technical University of Denmark (Technical University of Demark) is an ultrasound simulation software JA Jensen (Jorgen Arendt Jenson) developed the software based on the linear sound field theory, the basic concept is the spatial impulse response, first by Tupholme and Stepannishen and other proposed space impulse response is a home-related functions and what its convolution with the excitation signal transducer, you can get any of the transmitted wave to the focal point of the sound field. Wave transducer receives a signal corresponding with the inverse process of transmission, the reflector point in space as a transmission source, and the receiving transducer spatial convolution of the impulse response, thereby obtaining the echo signal.)

基于matlab的极值算法滤波，滤除超声信号中的脉冲噪声(based on matlab-the filter using extreme algorithm to filter out impulse noise)

声音采集处理，涉及频率，变换等，属于入门级别程序(Sound acquisition and processing, involving frequency, transform, are entry-level program)

利用MATLAB编写，完成一定操作，并计时时间的实例。(Written using MATLAB, the completion of certain operations, and the timing instance of time.)

信号的频谱分析及MATLAB实现_张登奇(2)(Signal spectrum analysis and MATLAB _ Zhang Dengqi (2))

matlab在数值分析中的应用，matlab在数值分析中的应用(matlab in Numerical Analysis)

Training software for Markov Random Fields used at INRA