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標題Title: Algorithms for Hiding Data in Speech Signals
作者Authors: 徐苡庭,林學彥..等
上傳單位Department: 資訊工程系
上傳時間Date: 2013-12-30
上傳者Author: 徐苡庭
審核單位Department: 資訊工程系
審核老師Teacher: 李南逸
檔案類型Categories: 課堂報告In-class Report
關鍵詞Keyword: Keywords: applications such as copyright protection, annotations
摘要Abstract: Abstract—This paper presents speech watermarking techniques
based on modification of the duration of estimated silence
regions, direct samples replacement within silence regions, dc
component changes per short-time frame, and specific modification
of low-amplitude samples ranges in a speech signal. These
methods could be used to secretly embed information into speech
data for applications such as copyright protection, annotations,
and covert communications. Natural variability of the modified
parameters within a sentence makes the algorithms imperceptible
to the human listener while providing enough bandwidth to hide
encoded information. Performance of the schemes is evaluated
by comparing them to other data watermarking approaches. Experimental
results for several speech signals verify the robustness
of the algorithm.

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2013_12_b23c94eb.pdf 816Kb pdf 61 2
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