 产生长度为1000的标准正太分布的随机信号，画出时域波形及频谱；  采用u=255的非均匀PCM编码，每符号为8bit，画输入-输出关系图；  计算信号量化噪声比（SQNR）；  信道误码率为10-3；  解码，并画出u律反变换后的信号时域波形及频谱。 扩展要求：  采用均匀PCM、量化级数可变、信道误码率可变。 - have a standard len

The objective is to find out the time at which the rocket reaches a speed of 1000m/s (3600km/hr). Analysis We know the following: * Initial mass of the rocket and fuel, 160000kg, or 160 metric tons. * Fuel combustion exhaust velocity relative

it is a useful program to calculate semblance in seismic data and perhaps is best one .and this code is tested and be work well and u try it too and it code is use for geophysics data and real field data and i am so happy that i used it ,and thank