A Novel Speech Watermarking Algorithm by Line Spectrum Pair Modification

摘要：

To explore digital watermarking specifically suitable for the speech domain, this paper experimentally investigates the properties of line spectrum pair (LSP) parameters firstly. The results show that the differences between contiguous LSPs are robust against common signal processing operations and small modifications of LSPs are imperceptible to the human auditory system (HAS). According to these conclusions, three contiguous LSPs of a speech frame are selected to embed a watermark bit. The middle LSP is slightly altered to modify the differences of these LSPs when embedding watermark. Correspondingly, the watermark is extracted by comparing these differences. The proposed algorithms transparency is adjustable to meet the needs of different applications. The algorithm has good robustness against additive noise, quantization, amplitude scale and MP3 compression attacks, for the bit error rate (BER) is less than 5％. In addition, the algorithm allows a relatively low capacity, which approximates to 50 bps.

关键词： digital watermarking speech signal line spectrum pair modification

作者: Qian Zhang Senbin Yang Guang Chen Jun Zhou

作者单位: Department of Communication Engineering Xian Communications Institute Xian, China General Demonstration Section Army Aviation Research Institute of General Staff Beijing, China

会议类型: 国际会议

会议名称: 2010 International Conference on Signal and Information Processing(2010年IEEE信号与信息处理国际会议 ICSIP2010)

会议地点: 长沙

会议语种:英文

页码: 154-157

在线出版日期: 2010-12-14（万方平台首次上网日期，不代表论文的发表时间）