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Study on Digital Watermarking for MP3 Audio

Author: ZuoMingMing
Tutor: WangHongXia
School: Southwest Jiaotong University
Course: Information Security
Keywords: Audio Watermarking Copyright Protection MP3 codec Robustness Imperceptibility
CLC: TP309.7
Type: Master's thesis
Year: 2010
Downloads: 142
Quote: 2
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Abstract


In recent years, digital multimedia technology and the rapid development of Internet technology makes images, video and audio , and other forms of multimedia creation , storage and transmission of digital works extremely convenient . Information security issues have become increasingly prominent , and digital watermarking technology is an important means to solve security issues such as copyright protection , tamper with authentication , notes anti-counterfeiting and identifies hidden its many advantages . In this paper, based on analysis of the MP3 compressed audio encoding and decoding process , expand watermark embedding and extraction method for the widely popular MP3 audio files in the current network , research work are as follows : (1) concluded that the MP3 codec only modified discrete cosine transform and quantization process , the watermark embedding and extraction . ( 2) the proposed algorithm embedded watermark to the least significant bit of the MP3 audio scale factor computing speed of this method can achieve real-time embedded watermark , and the watermark has good imperceptibility , the algorithm can resist for audio master the attack of the data , so that the algorithm can be applied in copyright protection , and does not require the participation of the original audio file and the original watermark signal to extract the watermark . ( 3 ) to achieve a simple interface , easy to operate MP3 audio watermark software with audio file playback , pause and stop functions , real-time embedded digital watermark to MP3 audio files . Experimental results show the advantages of this algorithm are : fast embedding imperceptible good , to meet the real-time requirements , practical applications in before the release of the MP3 audio works quickly embedded watermark for copyright protection .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > General issues > Security and confidentiality > Encryption and decryption
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