| 数字音频与录制设备的相关性研究 |
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| 引用本文： | 邵松年,黄征,徐彻,施少培,杨旭.数字音频与录制设备的相关性研究[J].计算机工程,2009,35(19):224-226. |
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| 作者姓名： | 邵松年 黄征 徐彻 施少培 杨旭 |
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| 作者单位： | 1. 上海交通大学信息安全工程学院,上海,200240
2. 司法部司法鉴定科学技术研究所,上海,200063 |
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| 基金项目： | 上海市科委基金资助项目"声像鉴定关键技术研究" |
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| 摘 要： | 提出一种在没有数字水印和数字签名的情况下，依据数字音频文件本身的特性鉴定其真实性的方法。利用小波降噪得到音频的噪声，以该噪声作为设备的特征本底噪声，与需要检测的音频本底噪声做比对，以检测该音频文件中是否被篡改入由其他种类设备录制的音频，从而为司法鉴定提供判断的依据。
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| 关 键 词： | 数字音频篡改 司法鉴定 小波降噪 本底噪声 |
| 修稿时间： | |
Research on Correlation of Digital Audio and Recording Device |
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| SHAO Song-nian,HUANG Zheng,XU Che,SHI Shao-pei,YANG Xu.Research on Correlation of Digital Audio and Recording Device[J].Computer Engineering,2009,35(19):224-226. |
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| Authors: | SHAO Song-nian HUANG Zheng XU Che SHI Shao-pei YANG Xu |
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| Affiliation: | (1. School of Information Security and Engineering, Shanghai Jiaotong University, Shanghai 200240; 2. Institute of Forensic Science Ministry of Justice P.R.China, Shanghai 200063) |
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| Abstract: | This paper proposes a method for detecting the digital audio through its characteristics without any digital watermark or signature embedded in. It gets the incidental background noise characteristics of the sample audio by wavelet de-noising, and compares it with the background noise of other audio to detect whether it is tampered by another piece of audio recorded by another type of device, which provides the evidence for judicial authentication. |
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| Keywords: | digital audio tampering judicial authentication wavelet de-noising background noise |
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