基于设备噪声估计的录音设备源识别

doi:10.13229/j.cnki.jdxbgxb201701040

摘要/Abstract

摘要： 针对录音设备源识别问题,首先分析了语音录音的产生过程,在此基础上提出了一种基于设备噪声估计的录音设备指纹,为了获取充分的设备噪声,使用了一个包含两种噪声估计算法的设备噪声估计器。为了验证提出的设备指纹的有效性,同时考虑了5种分类方法来进行录音设备源识别,并在两个录音库上进行了实验。其中一个包含22个录音设备,该22个设备分别来自4类常用的录音设备,另一个音库包含21个手机的语音录音。实验结果证明了本文方法的有效性。

关键词: 信息处理技术, 数字音频取证, 录音设备源识别, 噪声估计

Abstract: To resolve this problem, first, the procedure of the speed recording is analyzed and a recording device fingerprint based on device noise is proposed. Then, a noise estimator including two noise estimation algorithms is applied to acquire sufficient device noise. Finally, to evaluate the effectiveness of the proposed device fingerprint, five classification techniques are utilized to identify the source recording device. Experiments are carried out on two corpora. One corpus comprises speech recordings obtained by 22 recording devices coming from four types of common recording devices, and the other corpus consists of speech recordings from 21 cell phones. Experiment results verify the effectiveness of the proposed method.

Key words: information processing, digital audio forensic, source recording device recognition, noise estimation

中图分类号:

TN912.3

邹领, 贺前华, 邝细超, 李洪滔, 蔡梓文. 基于设备噪声估计的录音设备源识别[J]. 吉林大学学报(工学版), 2017, 47(1): 274-280.

ZOU Ling, HE Qian-hua, KUANG Xi-chao, LI Hong-tao, CAI Zi-wen. Source recording device recognition based on device noise estimation[J]. 吉林大学学报(工学版), 2017, 47(1): 274-280.

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