一种前后向多回声核隐藏算法

何禹洪; 陈雨; 杜婷婷

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一种前后向多回声核隐藏算法

更新时间：2026-09-04

- 一种前后向多回声核隐藏算法
- A forward-backward multi-echo kernel hiding algorithm
- 微电子学与计算机 2021年38卷第2期页码：25-29
- 作者机构：
  
  四川大学电子信息学院,四川,成都,610065
- 作者简介：
- 基金信息：
  
  国家“973”计划资助 2013CB328903-2
- DOI：
  中图分类号：
- 纸质出版：2021
- 稿件说明：
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何禹洪, 陈雨, 杜婷婷. 一种前后向多回声核隐藏算法[J]. 微电子学与计算机, 2021, 38(2): 25-29.

HE Yu-hong, CHEN Yu, DU Ting-ting. A forward-backward multi-echo kernel hiding algorithm[J]. 2021, 38(2): 25-29.
何禹洪, 陈雨, 杜婷婷. 一种前后向多回声核隐藏算法[J]. 微电子学与计算机, 2021, 38(2): 25-29. DOI：

HE Yu-hong, CHEN Yu, DU Ting-ting. A forward-backward multi-echo kernel hiding algorithm[J]. 2021, 38(2): 25-29. DOI：

摘要

数字音频水印是保护信息安全、实现防伪溯源、版权保护等的有效办法.多回声核隐藏算法的信息隐藏能力较强，并且具有良好的不可感知性，但后向回声个数的增多所带来的问题是后向回声之间干扰大，导致系统误码率增加，系统鲁棒性能下降.本文提出一种前后向多回声核隐藏算法，在多回声核隐藏算法的基础上引入前向回声，利用前向回声在倒频谱里对延迟点位置处幅度的增强来降低误码率和改善系统的鲁棒性能.结果表明：所提出的改进算法误码率相比多回声核隐藏算法下降22个百分点，且具有更好的鲁棒性能和不可感知性.

Abstract

Digital audio watermarking is an effective method to protect information security

realize anti-counterfeiting traceability

and copyright protection. The multi-echo kernel hiding algorithm has strong information hiding ability and good imperceptibility. However

the problem brought by the increase of the number of backward echoes is that the interference between the backward echoes is large

which leads to the increase of bit error rate and the decrease of system robustness. This paper presents a forward-backward multi-echo kernel hiding algorithm. The forward echo is introduced based on the multi-echo kernel hiding algorithm

and the amplitude of the forward echo in the cepstrum is enhanced to reduce bit error rate and improve the robustness of the system. The results show that the bit error rate of the proposed improved algorithm is 22% lower than that of the multi-echo kernel hiding algorithm

and it has better robust performance and imperceptibility

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references

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