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atan function using cordic

说明：  在matlab上实现通过巴特沃斯滤波器来设计数字滤波器。(In matlab to achieve through the Butterworth filter to design digital filters.)

这是matlab中的一个例子，请注意下载(This is the one example, attention is drawn to download)

implémentation adaboost

Arduino JSON Library

fresnel衍射传播函数，可以计算光波衍射过程(fresnel diffraction spread function can be calculated light wave diffraction process)

离散信号的快速傅里叶变换，微波干涉仪数据采集处理(Fast Fourier transform of discrete signal)

基于MATLAB的QPSK过程编程,并且对其过程的信号流程进行分析,用星座图分析其误码率(The QPSK based on MATLAB programming process, and its process of signal flow analysis, using the constellation diagram to analyze the bit error rate)

改变声音信号采样频率。应分别考虑由低到高和由高到低，最好包括声音采集和回放等功能。(To change the audio signal sampling frequency. Should be considered separately from low to high and high to low, preferably including audio capture and playback functions.)

Plots a graph of circle of any radius