Algorithm-Collections-for-Digital-Signal-Processi

该程序是MATLAB源程序，可以用来求纹理图像的方向。(MATLAB source code of the procedure can be used to seek the direction of texture images.)

说明：  用双音频输入重新仿真，实现频谱扩展功能，产生滤波后高斯过程功率谱密度和相关高斯序列时域值(Re-simulation with dual audio inputs, to achieve spread spectrum function, resulting in filtered Gaussian process Gaussian power spectral density and the associated value of time-domain sequence)

《Matlab工具箱应用》 张金明等编，原书扫描件(Applications, edited by Zhang Jinming Matlab toolbox, the original book scan)

本书将通信技术用代码的形式表现出来，读者可以通过代码来加深对理论知识的理解。(This book will use the code shown in the form of communication technology, the reader can through the code to deepen the understanding of theoretical knowledge. )

本程序适用于将一段长语音文件分割为多个所需小段，长度大小可调节，写该蚕食即可(This procedure applies to a long voice file into small pieces more than the required length of the size can be adjusted, you can write the encroachment)

微波啁啾延迟线设计程序。压缩包中，Chirp_z.m为计算等效电路中的阻抗分布。W_h.m为等效线宽的分布。结合相关的三维设计软件，可以设计出具有线性群时延特性的延迟线。(Microwave chirped delay line design program. Compressed packages, Chirp_z.m distribution for computing the impedance of the equivalent circuit. W_h.m equivalent linewidth distribution. 3D design software, you can design a linear group delay characteristics of the delay line.)

用于求解多个相干信号源的波达方向的子空间平滑算法(Subspace smoothing algorithm for solving the direction of arrival of multiple coherent sources )

。概括 了数字水印的研究现状和基本原理, 分析了基于小波变换的数字水印算法的优势, 阐述了小波 域水印嵌入与提取的过程, 最后由Matlab 仿真实现, 结果证明基于小波变换的数字水印具有较 强的掩蔽性和鲁棒性。(generalization The research status and the digital watermarking technology, analyzes the basic principle based on wavelet transform the advantage of digital watermarking algorithm, this paper expounds the wavelet Domain watermarking embedding and extracting process, finally by Matlab simulation results show the based on wavelet transform digital watermarking has more Strong masking and robustness. )

频谱感知技术中的能量检测技术的程序代码仿真(Spectrum sensing technology in the energy detection code simulation)

说明：  修正BBO晶体折射率色散公式中错误的系数 ，完成βBBO晶体Ⅱ类匹配的SPDC（共线情况）并计算相位匹配角。此时的相位匹配角为能 产生纠缠光子对的最小切割角。另附一份参考文献，详细的说明此类实验的步骤与细节。(Correct the wrong coefficient in the refractive index dispersion formula of BBO crystal, complete the type II matching SPDC of BBO crystal and calculate the phase matching angle. The phase matching angle is the minimum cutting angle that can produce entangled photon pairs. In addition, a reference is attached to explain the steps and details of such experiments in detail.)