Audio Information Hiding Based on Distance Metric
Spread spectrum techniques were invented in the 1950 s as a means of improving the security and reality of digital communications systems, and today they are regularly employed in wireless systems today. A narrowband data signal, such as a frequency shift keying (FSK) signal for example, is converted into a spread signal by modulating it with a wideband spreading signal that is independent of the data signal. This process caused the spread signal to occupy a spectral bandwidth far in excess of the bandwidth of the original data signal. The data signal at the decoder is recovered by correlating the spread signal with a synchronized copy of the spreading signal, also known as dispreading. The spread-spectrum techniques for watermarking are very popular nowadays. Two commonly spread spectrum techniques are used direct sequence spread spectrum (DSSS) and frequency hopped spread spectrum (FHSS). In this paper, we concentrate on the DSSS technique in stegangoraphy.
Audio Information Hiding Distance Metric Spread Spectrum
Xu Anying Liu Shuwei Xiong Shan Huang Juhua Xu Sisi
School of Electronic Information, Wuhan University, Wuhan 430079,China The Department of Electronics and Information Engineering, Huazhong University of Science and Techno
国际会议
2010 2nd International Conference on Signal Processing System(2010年信号处理系统国际会议 ICSPS 2010)
大连
英文
2124-2127
2010-07-05（万方平台首次上网日期，不代表论文的发表时间）