Concrete2d

针对Zemax2003版，可以读取Zemax的光线追迹数据，即*.zrd文件便于后期处理；(this program is designed to read*.zrd file for zemax2003)

FFT变换后，求取信号的振幅谱和相位谱，(Calculating the amplitude spectrum and phase signal spectrum)

adc 设计 比较器matlab 模型。(adc comparator)

计算LED光谱PWM，带一点算法和输入输出excel(PWM LED spectrum calculation)

二维经验模式分解（BEMD）程序，可用于图像分解 (Bidimensional Empirical Mode Decomposition)

这是一本有关 MATLAB 的参考书，适合于使用 MATLAB 或正在打算使用MATLAB 的读者。本书另辟蹊径可以借助或不借助 MATLAB 随带的文档资料让读者自学 MATLAB。书中口语化的风格,使读者易于阅读。(This is a reference book about MATLAB, suitable for use or are planning to use MATLAB MATLAB readers. This book can open a new path with or without the help of MATLAB documentation that comes with the reader learning MATLAB. Colloquial style of the book, the reader easy to read.)

高精度、低功耗模数转换器是当今集成电路设计模拟领域的研究热点之一，采用sigma-delta调制原理和过釆样原理的模数转换器广泛使用在音频、数字网络、电子测量等系统中。此类模数转换器，为降低信号带内的量化噪声功率，而釆用噪声整形技术，为提高模数转换器的信噪比，使用过采样技术，将基带中的量化噪声调制到了高频区域，这样就增加了基带中的信噪比，也就是增加了转换器的有效量化位数，由于采用较高的过采样率，Sigma-Delta ADC的转换速率相对较低，高精度和较低转换速率的特点，使得Sigma-Delta ADC特别适用于测量。(High precision, low power analog to digital converter is in today s integrated circuit design simulation has become one of the hot research field, the principle of sigma-delta modulation and ADC sampling principle is widely used in audio, digital network, electronic measurement system. This type of analog-to-digital converter, in order to reduce the quantization noise power signal in the band, and the use of noise shaping technique, in order to improve the SNR of the analog-to-digital converter, using the oversampling technique, modulate the quantization noise in the baseband to the high frequency region, which increases in the baseband signal to noise ratio, that is to increase the effective number of quantization bits converter, due to the sampling rate is high, the Sigma-Delta ADC conversion rate is relatively low, the characteristics of high accuracy and low conversion rate, so that Sigma-Delta ADC is especially suitable for measuring)

用来计算T检验的信度值，给定自由度和置信度计算其比如相关系数的信度值(this program if for student-test)

说明：  main是主函数，HK.m是分类算法函数，训练模式和待分类模式存放在Patterns.mat文件中，分为4个样本，其中w1和w3是训练模式，w2和w4是待分类的模式。

MVDR算法和QRLS算法信噪比性能研究(MVDR algorithm and signal to noise ratio performance of algorithm QRLS)