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Description: DCT离散余弦快速变换，可用于图象处理及音频信号处理-fast DCT discrete cosine transform, can be used for image processing and audio signal processing
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Size: 137719 |
Author: 刘铭 |
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Description: DCT离散余弦快速变换，可用于图象处理及音频信号处理-fast DCT discrete cosine transform, can be used for image processing and audio signal processing
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Size: 137216 |
Author: 刘铭 |
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Description: 一种基于DCT变换的数字水印算法的实现过程,水印为伪随机序列，包括嵌入和提取两个过程。其中textmark.m为攻击实验代码。-DCT-based Digital Watermarking Algorithm Transform realize the process, the watermark for the pseudo-random sequence, including both the process of embedding and extraction. Textmark.m experiment in which the attack code.
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Size: 2048 |
Author: 陈日进 |
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Description: 一种DCT变换的数字音频水印技术，可以进行水印的嵌入和提取-DCT transform of a digital audio watermarking technique that can be embedded and extracted watermark
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Size: 1024 |
Author: 半半倒 |
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Description: DCT域音频水印算法代码，用于音频媒体版权的保护-Audio Watermarking Algorithm for DCT-domain code
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Size: 1024 |
Author: cj |
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Description: 基于听觉频率掩蔽效应的音频数字水印算法和一种基于人耳掩蔽效应的DCT域音频水印-Auditory masking effect on the frequency of the audio digital watermarking algorithm based on the human ear and a masking effect of the DCT-domain audio watermarking
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Size: 923648 |
Author: lizhenzhen |
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Description: FMOD supports mp2, mp3 and Ogg vorbis in this release.
For mpeg audio you can reduce cpu usage by by using FSOUND_MPEGHALFRATE as a flag in
FSOUND_Stream_OpenFile.
This does an inverse dct at only half the rate, producing a 22khz output for a 44khz stream-FMOD supports mp2, mp3 and Ogg vorbis in this release.
For mpeg audio you can reduce cpu usage by by using FSOUND_MPEGHALFRATE as a flag in
FSOUND_Stream_OpenFile.
This does an inverse dct at only half the rate, producing a 22khz output for a 44khz stream
for example. The difference is only slightly noticable as the 22khz output is re-interpolated
back to the output rate, and if the output rate (from FSOUND_Init) is 22khz anyway, it shouldnt
sound any different. The benefit is roughly a 20 speed increase.
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Size: 1485824 |
Author: Jewlong |
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Description: DCT A discrete cosine transform (DCT) expresses a sequence of finitely many data points in terms of a sum of cosine functions oscillating at different frequencies. DCTs are important to numerous applications in science and engineering, from lossy compression of audio and images (where small high-frequency components can be discarded), to spectral methods for the numerical solution of partial differential equations. The use of cosine rather than sine functions is critical in these applications: for compression, it turns out that cosine functions are much more efficient (as explained below, fewer are needed to approximate a typical signal), whereas for differential equations the cosines express a particular choice of boundary conditions.
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Size: 8192 |
Author: iso |
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Description: 一种基于DCT变换的音频数字水印，将MP3音乐声音文件转化为WAV声音文件，将水印信息嵌入到WAV声音文件，再将WAV声音文件转化为MP3音乐声音文件。 -DCT-based audio digital watermark, the MP3 music sound files into WAV sound files, the watermark information embedded into the WAV sound files, and then WAV sound files into MP3 music sound files.
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Size: 34816 |
Author: 帅俊 |
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Description: All three, Discrete Wavelet Transform (DWT) - Singular
Value Decomposition (SVD) and Adaptive Tabu Search
(ATS) have been used as mathematical tools for embedding
data into an audio signal. In this paper, we present a new
robust audio watermarking scheme based on DWT-SVD and
ATS. After applying the DWT to the cover audio signal, we
map the DWT coefficients, and apply the SVD, we search for
the optimal intensity of audio watermarking by using the
ATS. Experimental results show that the watermarking
method performs well in both security and robustness to
many digital signals processing, such as filtering,
cropping, mp3 and random noise.
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Size: 267264 |
Author: Rishi |
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Description: DCT变换和DCT反变换大全，提供多种DCT算法的实现，可用于图像和声音处理。-DCT and IDCT package, supplies lots of DCT and IDCT algorithm, very useful to image and audio processing
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Size: 24576 |
Author: C.L Lee |
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Description: 图像置乱后嵌入音频中，用于dct域的音频水印处理-After scrambling embedded audio, audio for the dct domain watermarking
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Size: 2048 |
Author: 凡超 |
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Description: 水印嵌入后的提取，在dct域音频水印中的基础应用-After the extraction of the watermark embedded in the dct domain based on application of audio watermarking
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Size: 2048 |
Author: 凡超 |
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Description: 基于离散余弦变换的数字音频水印技术,可供毕业设计的同学参考-DCT-based digital audio watermarking technique，could be a reference for the students under final year projects
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Size: 3072 |
Author: WB |
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Description: 本文在DCT噪声信号模型研究的基础上,提出了一种新的音频水印嵌入位置选择策略和一个应用该策略的自适应音频水印算法. 通过定义DCT系数的噪声敏感度,建立了水印嵌入位置和嵌入水印后的音频信号的听觉感知性之间的关系,根据音频水印的不可听性的要求选择最优的嵌入位置,然后调节水印强度来满足鲁棒性的要求,从而最大程度地保持音频水
印的不可听性和鲁棒性,为解决音频水印嵌入过程中不可听性和鲁棒性之间的矛盾提供了一种策略.-Though m any w orks in the literature agree that w aterm ark should be em bedded in the middle2fre2
quency coefficients or percep tually significant components, how to determ ine the position em bedded has no universal
definition. A new em bedding strategy and an algorithm app lying the strategy are p roposed for audio w aterm arking in
DCT dom ain based on research of DCT noise m odal. B y defining a noise sensitivity vector, a m ath relationship betw een
the w aterm ark em beddable position and the audible quality of the audio file w ith w aterm ark is set up.
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Size: 873472 |
Author: 郑杨 |
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Description: 基于离散余弦变换的一段音频水印嵌入程序，对毕业设计有一定的帮助-A discrete cosine transform-based audio watermark embedding program, designed for graduates of some help
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Size: 1024 |
Author: maguanglu |
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Description: 主要介绍基于dct的数字音频水印，以及水印的嵌入和水印的提取-Introduced digital audio watermarking based on dct, and the watermark embedding and watermark extraction
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Size: 1024 |
Author: 苏日新 |
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Description: 主要介绍基于dct的数字音频水印，以及水印的嵌入和水印的提取-Introduced digital audio watermarking based on dct, and the watermark embedding and watermark extraction
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Size: 1024 |
Author: 苏日新 |
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Description: 基于DWT的数字音频水印,描述音频水印如何嵌入，提取，检测的一个小程序
-Digital audio watermarking based on DWT
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Size: 6144 |
Author: jordankun |
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Description: 水印,旨在保护数字资源的版权信息，保障数字媒体内容的安全性，解决网络上的侵权问题，数字水印技术应运而生。(watermarking,With the rapid development of information technology, global networking, the emergence of e-commerce and a large number of commercial multimedia services, the copyright protection of digital resources, such as text, pictures, audio, video or software, is particularly important.The opening of digital resources has also brought many disadvantages.)
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Size: 53248 |
Author: 小邱邱 |
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