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watermark1.基于MATLAB环境的音频水印白噪声攻击试验源程序
- 基于MATLAB环境的音频水印白噪声攻击试验源程序,MATLAB-based environment audio watermarking attacks white noise test source
xiaobo
- 该程序实现了小波变换对音频信号的降噪处理，简单实用！程序运行时需要一个.wav格式的音频信号。-Procedures for the implementation of the wavelet transform of the noise reduction audio signal processing, simple and practical! Procedures required a run-time. Wav format audio signal.
dangonghujiaojieshouji
- 接收部分以超大规模AM/FM立体声收音集成芯片CXA1238S为主体，灵敏度、镜像抑制、信噪比等各项性能指标均达到设计要求；音频功率放大器采用集成芯片LM386，电压放大倍数最大为200。-Receive part of ultra-large-scale AM/FM stereo radio IC CXA1238S as the main body, sensitivity, image rejection, signal to noise ratio and other performanc
denoising
- 用于信号降噪 处理，使用小波变换算法，可用于音频文件处理-For signal noise reduction, using wavelet transform algorithm can be used for processing audio files
Wavelets
- 1 Haar Wavelets 1.1 The Haar transform 1.2 Conservation and compaction of energy 1.3 Haar wavelets 1.4 Multiresolution analysis 1.5 Compression of audio signals 1.6 Removing noise from audio signals 1.7 Notes and references 2 Daub ech
Audio-watermarking-internship-report
- 音频信号的水印设计，以音频信号为载体，将秘密信号嵌入载体音频信号当中， 实现音频信号的水印。采用变换域小波变换（DWT）的技术，将音频信号进行小波变换，提取出低频分量，然后将水印嵌入到音频信号的低频当中。实验当中先在MATLAB 上面进行了仿真实验，并且通过加入噪声以及滤波等进行干扰以此检测了算法的透明性和健壮性，然后利用C 语言进行了测试，最后经 过一些修改，例如加入定时器以及进行中断的处理和加入缓冲在DSP 板子上实现了加入水印的音频声音的播放。-Audio signal water
demo
- 音频信号的处理:导入一个时长若干秒的音频信号，得到该音频文件的频率fs和幅度A，显示信号的时域图和频谱图，加入频率为fs/3，幅度为2A的噪声，分析、显示并播放有噪声时时域图和频谱图，以及滤除噪声后的信号的时域图和频谱图。-Audio signal processing: Import a duration of several seconds of the audio signal to obtain a frequency fs, and the amplitude A of the aud
xinhaolvbao
- 数字音频信号滤波：读取音频文件，加入噪声，设计合理的带阻滤波器，滤除噪音，并给出所有音频的频谱以及播放试听所有声音。-Digital audio signal filtering: read audio files, add noise, the rational design of band-stop filter to filter out noise, and given all the audio spectrum and play to listen to all voices.
sheji
- 先对语音信号进行采集、播放，分析其频谱，对该信号源添加噪声，再播放音频并分析频谱，然后分别通过IIR低通、带通滤波器和FIR低通、带通滤波器，分别播放音频和得到滤波后的频谱。-Firstly， voice signal acquisition, play, analyze its spectrum to add noise to the signal source, and then play the audio spectrum analysis, and then were by IIR l