Audio Watermarking Using LSB Algorithm in MATLAB

基于LSB的图像水印算法是通过MATLAB实现的，包含有实现的源代码和论文。该算法通过最低有效位（LSB）技术，嵌入水印信息于图像中，确保视觉质量不受影响，同时实现信息的隐藏与传输。

In this article, we will use MATLAB to simulate the ECC algorithm, exploring each step of the simulation process. ECC (Elliptic Curve Cryptography) is a widely-used cryptographic algorithm known for its efficiency and security. Through MATLAB, you can effectively simulate ECC to understand its key operations and performance. Below are the detailed steps for implementation: Step 1: Setup MATLAB Environment To begin, ensure you have MATLAB installed and configured with necessary libraries. Load any required ECC-related toolboxes or files. Step 2: Define ECC Parameters Define the parameters for the elliptic curve such as prime modulus, base point, and curve equation. These are crucial in generating secure keys and verifying the cryptographic functionality. Step 3: Implement Key Generation Using ECC, you can create public and private keys. In MATLAB, code the key generation process by selecting random integers for the private key and calculating the public key based on ECC operations. Step 4: Encryption and Decryption Simulation Simulate the encryption process where a plaintext message is converted into an ECC point and then encrypted with the public key. For decryption, utilize the private key to retrieve the original message. Step 5: Verify Algorithm Performance Analyze the computational performance of ECC in MATLAB, focusing on encryption speed, memory usage, and any points of optimization. This helps in understanding ECC's advantages in cryptographic applications. By following these steps, you'll have a robust ECC simulation in MATLAB, providing insights into the algorithm's implementation and potential optimizations.

数据结构-匹配括号（栈） 本节课程主要讲解了使用栈来实现括号匹配的算法。栈是一种基本的数据结构，可以用来解决括号匹配问题。 栈的定义栈是一种后进先出（LIFO）的数据结构，它可以用来存储和检索数据。栈的结构体可以用C语言中的结构体来定义，如下所示： typedef struct Stack { elemtype data[Maxsize]; int top; } Stack; 其中，data是元素数组，top是栈顶指针。栈的基本操作包括入栈、出栈和判断栈是否为空等。 入栈操作入栈操作是将元素压入栈中。入栈操作的实现代码如下所示： Stack Push(Stack& S, elemtype e) { S.top++; S.data[S.top] = e; return S; } 出栈操作出栈操作是将栈顶元素弹出栈。出栈操作的实现代码如下所示： Stack Pop(Stack& S, elemtype& e) { e = S.data[S.top]; S.top--; return S; } 判断栈是否为空判断栈是否为空的操作是检查栈顶指针是否等于-1。如果等于-1，则栈为空。实现代码如下所示： bool Isempty(Stack S) { if (S.top == -1) { return true; } else { return false; } } 括号匹配算法该算法用于检查括号是否匹配。代码如下所示： bool BreacketCheak(Stack S, char arr[], int n) { elemtype s; int i = 0; int x = 0, y = 0; if (n % 2 != 0) { return false; } if (n % 2 == 0) { while (i < n xss=removed xss=removed xss=removed xss=removed xss=removed xss=removed xss=removed xss=removed xss=removed xss=removed>

这是product quantization算法中基于ADC距离计算在Windows下的MATLAB实现源码。

10-Armed Bandit Testbed: This script uses the greedy algorithm to simulate a testbed of 10-armed bandits. The setup involves 2,000 randomly generated k-armed bandit problems with k = 10. For each bandit problem, the action values, q*(a) for a = 1, 2, ..., 10, are selected from a normal distribution with a mean of 0 and a variance of 1. During each time step t, a learning method selects an action At, and the actual reward Rt is drawn from a normal distribution with a mean of q*(At) and variance 1. By evaluating performance over 1,000 time steps for each testbed, we obtain a performance measure that shows improvement in the learning method over time. Each test is considered a run, and we conduct 2,000 independent runs with unique bandit problems. This simulation enables us to measure the average behavior of the greedy algorithm using sample average techniques to estimate action values. We then compare the average reward over 2,000 simulations. The code also allows for modification to evaluate non-greedy algorithms.

Euler's Formula for Pi Calculation in MATLAB provides a versatile algorithm collection where users can contribute implementations in any language. This repository follows a structured format for adding algorithms in different languages. For example, if you are adding a Hamiltonian Path algorithm in Java, use the following folder structure: /BackTracking/HamiltonPath/ and name the file HamiltonPath.java or HamiltonPath.txt. Folder and File Structure for Algorithm Contributions: Specify Language: Clearly indicate the language used. Follow Folder Structure: Maintain folder hierarchy as specified. File Naming: Use descriptive file names, as shown in examples. Example Structure for MATLAB and Other Languages | Algorithm Type | Language | Path ||----------------|----------|------|| Euler Formula | MATLAB | /Calculus/EulerFormula/EulerFormula.m || Hamilton Path | Java | /BackTracking/HamiltonPath/HamiltonPath.java | Contribution Guide- Ensure all contributions adhere to the naming and directory conventions.- Structure code clearly and include relevant comments where necessary.

HDR_to_audio是一个适用于音频的高动态范围同步信号合成的实现代码。该项目在MATLAB/Python中参考了Ryan Janzen和Steve Mann的论文“HIGH DYNAMIC RANGE SIMULTANEOUS SIGNAL COMPOSITING, APPLIED TO AUDIO”，为生物医学脉冲超声和水锤研究等应用提供良好的开端。它能够同时处理周期性发生的强声脉冲和微弱声音，具有很好的应用价值。

This process involves two model files. One is used for optimization, and the other is for the final use after optimization. You must run the 'Main_ImperialistCompetitiveAlgorithm.m' file for optimization. You can modify the parameter optimization range by changing the [varmin] and [varmax] matrices in the 'Main_ImperialistCompetitiveAlgorithm.m' file. After obtaining the optimized PI controller parameters, you can input them into the 'dc_motor_speed_controller_final' model to observe the motor speed response. A signal generator acts as the reference speed profile, with three signals in total. The second signal is used for optimization purposes. If you need to modify the reference signal for optimization, you must also change the cost function. The [n] matrix and [input] matrix must be adjusted, and the indices will also change. Please refer to the cost function. The cost function consists of a set of metrics, including total integral error, settling time, rise time, and overshoot. Priorities are assigned to these parameters—for example, rise time and settling time are considered more critical than overshoot and error. If adjustments are needed, you must update the cost function accordingly.

This document provides various examples of basic compressed sensing using the MATLAB function linprog. The following examples demonstrate how to apply compressed sensing techniques to different types of signals: ECG Signal Compression K-sparse Signal Recovery Audio Signal Compression Encrypted Data Recovery Image Compression via L1 minimization Each section includes practical code examples, with step-by-step explanations to help you understand how to implement compressed sensing in different applications.