An audio steganography algorithm based on segment-STC

Xueyuan ZHANG; Rangding WANG; Diqun YAN; Yuzhen LIN

doi:10.11959/j.issn.1000-0801.2019071

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An audio steganography algorithm based on segment-STC

research and development | 更新时间：2024-06-05

- An audio steganography algorithm based on segment-STC
- Telecommunications Science Vol. 35, Issue 7, Pages: 115-123(2019)
- 作者机构：
- 作者简介：
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- DOI：10.11959/j.issn.1000-0801.2019071
  CLC： TP391
- Published Online：2019-07，
  
  Published：20 July 2019
- 稿件说明：
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Xueyuan ZHANG, Rangding WANG, Diqun YAN, et al. An audio steganography algorithm based on segment-STC[J]. Telecommunications science, 2019, 35(7): 115-123.
DOI：

Xueyuan ZHANG, Rangding WANG, Diqun YAN, et al. An audio steganography algorithm based on segment-STC[J]. Telecommunications science, 2019, 35(7): 115-123. DOI： 10.11959/j.issn.1000-0801.2019071.

摘要

在隐写领域中，STC（syndrome-trellis code）隐写编码是时下最为先进的隐写算法之一。提出了一种基于STC的隐写算法——分段STC。该算法利用分段、局部优化，可有效降低载体失真。首先对音频最低有效位（least significant byte，LSB）载体流进行了分段切割，随后利用最佳子校验矩阵将分段的密信嵌入分段载体中。该隐写算法在现有的语音样本库TIMIT库以及通过网络歌曲自制的样本库上进行了隐写实验。实验结果表明，该思路下的算法可以有效地降低载体的失真元素个数和提高隐写算法的不可检测性。本文算法相较于传统STC算法，失真元素个数的优化程度最高可达到24%；对比同类音频隐写算法，本文算法生成的隐写后音频具备更加优秀的不可感知性能。

Abstract

In steganography field

syndrome-trellis code is a state-of-the-art steganography algorithm. A steganography algorithm of Segment-STC was proposed. Segment-STC could locally optimize the distortion by segmentation. Firstly

the LSB-stream (least significant bit

LSB) of audio cover was segmented as few sub-segments. Then

the segmented message in each sub-segment was embedded to the optimal submatrix. The TIMIT dataset and author collected online songs as databases was used to run the experiments. Results show that segment-STC can effectively reduce the number of distortion elements of cover and improve the undetectability of the stego. Segment-STC algorithm can reduce the distortion over 24%

compared with the original STC algorithm. It also has a better imperceptible performance compare with other similar audio steganography algorithms.

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references

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