基于分数基音延迟动态搜索的语音隐写算法

田晖; 严艳; 汤莉莉; 吴俊彦; 王慧东; 全韩彧

doi:10.12263/DZXB.20211473

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基于分数基音延迟动态搜索的语音隐写算法

学术论文 | 更新时间：2025-07-02

- 基于分数基音延迟动态搜索的语音隐写算法
- Speech Steganography Based on Dynamic Search of Fractional Pitch Delay
- 电子学报 2023年51卷第1期页码：67-75
- 作者机构：
  
  1.华侨大学计算机科学与技术学院,福建厦门 361021
  2.厦门市数据安全与区块链技术重点实验室,福建厦门 361021
  3.福建省大数据智能与安全重点实验室,福建厦门 361021
  4.华侨大学机电及自动化学院,福建厦门 361021
- 作者简介：
  
  [ "田　晖　男，1982年10月出生，湖北赤壁人.博士，教授，博士生导师.主要研究领域为网络与信息安全、数据安全、人工智能安全、信息隐藏及检测、数字取证等.E-mail: htian@hqu.edu.cn" ]
  [ "严　艳　女，1997年2月出生，江西赣州人.华侨大学计算机科学与技术学院硕士研究生.主要研究方向为信息隐藏及检测、深度学习." ]
- 基金信息：
  
  国家自然科学基金(61972168)
- DOI：10.12263/DZXB.20211473
  中图分类号： TP309
- 收稿：2021-11-01，
  
  修回：2022-09-02，
  
  纸质出版：2023-01-25
- 稿件说明：
移动端阅览
田晖,严艳,汤莉莉等.基于分数基音延迟动态搜索的语音隐写算法[J].电子学报,2023,51(01):67-75.

TIAN Hui,YAN Yan,TANG Li-li,et al.Speech Steganography Based on Dynamic Search of Fractional Pitch Delay[J].ACTA ELECTRONICA SINICA,2023,51(01):67-75.
田晖,严艳,汤莉莉等.基于分数基音延迟动态搜索的语音隐写算法[J].电子学报,2023,51(01):67-75. DOI： 10.12263/DZXB.20211473.

TIAN Hui,YAN Yan,TANG Li-li,et al.Speech Steganography Based on Dynamic Search of Fractional Pitch Delay[J].ACTA ELECTRONICA SINICA,2023,51(01):67-75. DOI： 10.12263/DZXB.20211473.

摘要

论文提出了一种基于分数基音延迟动态搜索的语音隐写算法.该算法可根据隐藏容量（

比特/子帧）的需要将分数基音延迟候选值集合划分为2

个子集，每个子集代表不同的

比特信息.在闭环基音搜索过程中，可为每个子帧选择既能表示待嵌入隐秘信息且内插后的归一化相关系数最大的分数基音延迟候选值，从而有效降低隐写操作对于原始载体的影响.以目前IP语音系统中广泛使用的自适应多速率语音编码为例，对该算法从隐藏容量、不可感知性及抗检测性三方面进行了性能评估并与相关工作进行了对比分析.实验结果表明，本文提出的隐写算法较之现有基于基音延迟的隐写算法可在确保较高隐写容量的同时达到更好隐写安全性（即更好抗检测能力和不可感知性）.

Abstract

In this paper

we present a speech steganography algorithm based on dynamic search of fractional pitch delay. The algorithm can divide the candidate value set of fractional pitch delay into 2

subsets according to the needs of the covert capacity (

bits/subframe)

where each subset represents different

bits of information. In the closed-loop pitch search process

the algorithm can select for each subframe the best candidate value of pitch delay that can not only denote the secret information but also make the interpolated normalized correlation coefficient largest. In this way

the impact of steganographic operations on the original carriers can be effectively reduced. Taking adaptive multi-rate speech codec widely used in the current Voice-over-IP systems as an example

the performance of presented algorithm has been evaluated from the aspects of covert capacity

imperceptibility and anti-detection

and compared with related works. Experimental results show that the proposed steganographic algorithm can achieve better steganography security (better resistance to detection and imperceptibility) than the existing steganographic methods based on pitch delay

while maintaining relatively high steganographic capacity.

关键词

Keywords

references

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