FFT-Based Data Hiding on Audio in LWT-Domain Using Spread Spectrum Technique
نویسندگان
چکیده
منابع مشابه
Security of spread-spectrum-based data hiding
This paper presents an information-theoretic analysis of security for data hiding methods based on spread spectrum. The security is quantified by means of the mutual information between the observed watermarked signals and the secret carrier (a.k.a. spreading vector) that conveys the watermark, a measure that can be used to bound the number of observations needed to estimate the carrier up to a...
متن کاملSpread-spectrum vs. quantization-based data hiding: misconceptions and implications
The performance of quantization-based data hiding methods is commonly analyzed by assuming a flat probability density function for the host signal, i.e. uniform inside each quantization cell and with its variance large enough to assuming that all the centroids occur with equal probability. This paper comes to fill a gap in watermarking theory, analyzing the exact performance of the Scalar Costa...
متن کاملResearch on Time-Frequency Domain Acquisition Algorithm of Parallel Combinatory Spread Spectrum System Based on FFT
In this paper, an acquisition algorithm is discussed in parallel combinatory spread spectrum (PCSS) system. The algorithm model is first built. Then, an improved algorithm utilizing multiple correlation peak accumulation under low SNR is proposed. The simulation results show that Doppler offset and PN code-phase delay can be obtained by using the proposed acquisition algorithms. The simulation ...
متن کاملA Novel Session Based Dual Image Encoding and Hiding Technique Using DWT and Spread Spectrum
This work proposes a DWT based Steganographic technique. Cover image is decomposed into four sub bands using DWT. Two Encoded secret images are embedded within the HL and HH sub bands respectively. During embedding secret images are dispersed within each band using a pseudo random sequence and a Session key. Encoded Secret images are extracted using the session key and the size of the images .D...
متن کاملData Hiding in Audio Using Matlab Software
ABSTRACTThis paper presents a method of hiding the text message watermark into audio. This hiding technique is called amplitude modification in low bit encoding. The message embedded into higher LSB layers to increase the robustness. The technique is implemented in matlab since it is a language for data analysis and numerical computation. This proposed scheme includes dynamic coding approach fo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Elektronika ir Elektrotechnika
سال: 2020
ISSN: 2029-5731,1392-1215
DOI: 10.5755/j01.eie.26.3.23950