A Perceptual Based Digital Watermark Scheme for Audio Signals

• Main Authors: Pei-Chen Chang, 張北辰
• Other Authors: Ja-Ling Wu
• Format: Others
• Language: en_US
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/32708626488276803841

碩士 === 國立臺灣大學 === 資訊工程學研究所 === 89 === In this thesis, we have proposed a watermarking system that makes use of spread spectrum technique to embed a binary image into an audio data in the subband domain. Moreover, we have proposed an application of MPEG-1 psycho-acoustic model for providing the capability of acoustic transparency in audio watermarking. Besides, we have listed the experimental results based on the proposed system with three kinds of audio tracks as the host audio data and with two kinds of binary images as the watermarks. The extracted watermark images are listed to show the robustness of our system while the SNR between the embedded watermark images and the original ones are listed to show the transparency of proposed work