计算机应用与软件2012，Vol.29Issue(3)：163-167,182,6.
基于小波和倒谱域的数字音频水印算法
DIGITAL AUDIO WATERMARKING ALGORITHM BASED ON WAVELET AND CEPSTRUM DOMAIN
摘要
Abstract
A strong robust digital audio watermarking algorithm based on wavelet transform and cepstrum domain is proposed in this paper. First, the audio wavelet-transformed imperceptible low frequency coefficients are selected using the human ear hearing model and the masking effect on the frequency, then these coefficients are frame-separated and are conducted the cepstrum transformation. According to the characteristic that the energy in cepstrum domain focuses on both sides of the centre, the pseudorandom sequence is embedded into relatively stable cepstrum coefficients in each segment so as to achieve watermark embedding. The watermarks are extracted out using the method of correlation detection according to the polarity of the correlated value. Experiments show that the audio signal with embedded watermarks has good imperceptibility and strong robustness against various common signal processing attacks, such as noise adding, low-pass filtering, resampling, requalisation, echo, MP3 compression and desynchronisation, etc.关键词
盲音频水印/相关检测/倒谱变换/离散小波变换Key words
Blind audio watermarking/Correlation detection/Cepstrum transform/Discrete wavelet transform分类
信息技术与安全科学引用本文复制引用
柏玉保,柏森,刘程浩..基于小波和倒谱域的数字音频水印算法[J].计算机应用与软件,2012,29(3):163-167,182,6.基金项目
重庆市自然科学基金(CSTC2008BB2296). （CSTC2008BB2296）
