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Description: 频域和子带自适应滤波器，在频域进行滤波器参数调整-frequency domain and sub-band adaptive filter in the frequency domain filter parameter adjustment
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Size: 5664 |
Author: 谢晓丹 |
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Description: 一种新的图像脆弱水印算法李亚琴 ，孙星明 ，杨恒伏(1．苏州市职业大学，江苏苏州215104；2．湖南大学计算机与通信学院，湖南长沙410082)摘要：提出一种基于小波变换和QR分解的图像脆弱水即方法。嵌入水印时，首先对原始图像进行三级小波分解，然后提取第三级低频子带的边缘特征，同时对此边缘特征和第三级垂直高频子带进行QR分解，用边缘特征的一部分分解结果替换垂直高频子带分解结果的相应部位来嵌入水即，最后进行小波逆变换得到嵌入水印的图像。图像认证时，首先对观测图像进行三级小波分解，第三级垂直高频子带与低频子带边缘特征的QR分解结果进行比较，就可以准确认证图像是否经过攻击，并可以精确定位受攻击的部位。实验结果表明此方法的有效性和可行性。-a new image fragile watermarking algorithm Ya-Qin Li, Sun Xingming, Heng Yang Fu (1. Suzhou City Vocational University, Suzhou City in Jiangsu 215104; 2. Hunan University College of Computer and Communication, Changsha, Hunan 410082) Abstract : A wavelet transform based on QR decomposition and the image that the fragile water ways. Embedded watermark, the first of three original image wavelet decomposition, and then extract the third level sub-band edge features, Meanwhile this edge features and third-vertical high-frequency band for QR decomposition, Edge feature with the results of the replacement part of decomposition vertical high-frequency subband results to the corresponding parts of the water that is embedded. Finally inverse wavelet transform embedded watermark images. Image Authen
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Size: 231599 |
Author: ghostsx |
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Description: 基于自适应子带频谱熵的稳健性语音端点检测，自己写的，希望对大家有帮助。-based on adaptive sub-band spectrum entropy stability voice activity detection, wrote it myself, and I hope to be helpful.
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Size: 1164 |
Author: 李金宝 |
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Description: 语音信号子带编码源程序，用matlab做的-voice signal source sub-band coding, using Matlab done
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Size: 23243 |
Author: djz |
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Description: 设采样频率为1Hz，对于淹没在复高斯白噪声中的信噪比为 的两个复LFM信号，采用子带带宽为0.1Hz的升余弦滤波器，共9个子带滤波器构成的滤波器组，时间窗为窗长为256的矩形窗，进行仿真-based sampling frequency of 1Hz. For drowned in the complex Gaussian white noise to the signal-to-noise ratio of 2 Minute LFM, using sub-band bandwidth of 0.1 Hz or cosine filter, a total of nine sub-band filter a filter group, time window to window to 256 long rectangular window simulation
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Size: 1130 |
Author: eric |
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Description: 频域和子带自适应滤波器，在频域进行滤波器参数调整-frequency domain and sub-band adaptive filter in the frequency domain filter parameter adjustment
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Size: 5120 |
Author: 谢晓丹 |
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Description: 一种新的图像脆弱水印算法李亚琴 ，孙星明 ，杨恒伏(1．苏州市职业大学，江苏苏州215104；2．湖南大学计算机与通信学院，湖南长沙410082)摘要：提出一种基于小波变换和QR分解的图像脆弱水即方法。嵌入水印时，首先对原始图像进行三级小波分解，然后提取第三级低频子带的边缘特征，同时对此边缘特征和第三级垂直高频子带进行QR分解，用边缘特征的一部分分解结果替换垂直高频子带分解结果的相应部位来嵌入水即，最后进行小波逆变换得到嵌入水印的图像。图像认证时，首先对观测图像进行三级小波分解，第三级垂直高频子带与低频子带边缘特征的QR分解结果进行比较，就可以准确认证图像是否经过攻击，并可以精确定位受攻击的部位。实验结果表明此方法的有效性和可行性。-a new image fragile watermarking algorithm Ya-Qin Li, Sun Xingming, Heng Yang Fu (1. Suzhou City Vocational University, Suzhou City in Jiangsu 215104; 2. Hunan University College of Computer and Communication, Changsha, Hunan 410082) Abstract : A wavelet transform based on QR decomposition and the image that the fragile water ways. Embedded watermark, the first of three original image wavelet decomposition, and then extract the third level sub-band edge features, Meanwhile this edge features and third-vertical high-frequency band for QR decomposition, Edge feature with the results of the replacement part of decomposition vertical high-frequency subband results to the corresponding parts of the water that is embedded. Finally inverse wavelet transform embedded watermark images. Image Authen
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Size: 231424 |
Author: ghostsx |
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Description: 基于自适应子带频谱熵的稳健性语音端点检测，自己写的，希望对大家有帮助。-based on adaptive sub-band spectrum entropy stability voice activity detection, wrote it myself, and I hope to be helpful.
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Size: 1024 |
Author: 李金宝 |
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Description: 语音信号子带编码源程序，用matlab做的-voice signal source sub-band coding, using Matlab done
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Size: 22528 |
Author: djz |
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Description: 该文件含有自适应滤波的四篇国外经典文章,其中有连续自适应滤波的结构,无迟延子带自适应滤波器构造,FIR滤波器的时频实现等域.是自适应滤波器构造的经典文献-the adaptive filter paper containing the four foreign classic articles, which are continuous adaptive filter structure, without delay subband adaptive filter structure, FIR filters achieve such time-frequency domain. adaptive filter is constructed of classic literature
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Size: 2697216 |
Author: 单昊 |
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Description: 设采样频率为1Hz，对于淹没在复高斯白噪声中的信噪比为 的两个复LFM信号，采用子带带宽为0.1Hz的升余弦滤波器，共9个子带滤波器构成的滤波器组，时间窗为窗长为256的矩形窗，进行仿真-based sampling frequency of 1Hz. For drowned in the complex Gaussian white noise to the signal-to-noise ratio of 2 Minute LFM, using sub-band bandwidth of 0.1 Hz or cosine filter, a total of nine sub-band filter a filter group, time window to window to 256 long rectangular window simulation
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Size: 1024 |
Author: eric |
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Description: OFDM信号的频偏校正程序，用于估计子带上的频率偏移。-OFDM signals in frequency offset correction procedure used to estimate the sub-band frequency deviation.
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Size: 7168 |
Author: dengyongma |
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Description: 利用分频可以产生一系列脉冲，根据输入脉冲的不同决定你得到的一系列脉冲频率-The use of sub-band can produce a series of pulses, according to input pulse of different decisions you have a series of pulse frequency
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Size: 1024 |
Author: 杨强 |
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Description: sub-band 应用于语音编码-applies to sub-band speech coding
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Size: 176128 |
Author: xxh |
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Description: 语音信号的子带编码算法,Matlab环境-Sub-band speech signal coding algorithms, Matlab environment
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Size: 3072 |
Author: 方蕾 |
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Description: 纯contourlet变换，已对工具包进行了修改，使之在分解重构时能显示子带系数。-Pure contourlet transformation toolkit has been modified so that when displayed in the decomposition and reconstruction sub-band coefficients.
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Size: 193536 |
Author: 刘灿 |
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Description: 3个版本的带运动估计得三维子带编码方案。-Three versions of the motion estimation with three-dimensional sub-band coding scheme was.
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Size: 3874816 |
Author: lili |
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Description: sub band coding implementation(both encoder and decoder). tested with audio input
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Size: 1466368 |
Author: sathish |
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Description: 子带编码是一种以信号频谱为依据的波形编码方法，首先用一组带通滤波器将输入信号按频谱分开，然后让每路子信号通过各自的自适应PCM编码器（ADPCM）编码，经过分接和解码再复合成原始信号。-In sub-band coding is a waveform signal based on the spectrum coding method using a first set of band pass filters to separate an input signal spectrum, and so that each signal path through the respective adaptive PCM coder (ADPCM) encoding, after tap and then combined into the original decoding signal.
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Size: 5048320 |
Author: zx |
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Description: it s code about sub-band coding in matlab
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Size: 176128 |
Author: Tuan |
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