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A Novel Audio Watermarking Algorithm for Copyright Protection of Digital Audio
Jongwon Seok, 홍진우, 김진웅
ETRI Journal 24권 3호 181-189(9pages)
UCI G704-001110.2002.24.3.007

Skeletal muscle is one of the most unusual metastaticsites for any malignancy. Duodenal cancer is extremelyrare, and no cases of skeletal muscle metastasis fromduodenal cancer have been reported. We report here ina case of metastasis to the skeletal muscle of the leftthigh from duodenal cancer. Our patient was a 47-year-oldman, exhibiting a painful mass in the posterior aspect ofhis left thigh over a 4 month period. An imaging study,and a biopsy, revealed a duodenal adenocarcinoma metastasizeto the skeletal muscle. The patient refusedchemotherapy and has followed up for 4 months. (Cancer Rese Treat. 2002;34:394-396)

Digital watermark technology is now drawing attention as a new method of protecting digital content from unauthorized copying. This paper presents a novel audio watermarking algorithm to protect against unauthorized copying of digital audio. The proposed watermarking scheme includes a psychoacoustic model of MPEG audio coding to ensure that the watermarking does not affect the quality of the original sound. After embe dding the watermark, our scheme extracts copyright information without access to the original signal by using a whitening procedure for linear prediction filtering before correlation. Experimental results show that our watermarking scheme is robust against common signal processing attacks and it introduces no audible distortion after watermark insertion.

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