Abstract：
:In this article, the authors discuss the problem of forensic authentication of digital audio recordings. Although forensic audio has been addressed in several articles, the existing approaches are focused on analog magnetic recordings, which are less prevalent because of the large amount of digital recorders available on the market (optical, solid state, hard disks, etc.). An approach based on digital signal processing that consists of spread spectrum techniques for speech watermarking is presented. This approach presents the advantage that the authentication is based on the signal itself rather than the recording format. Thus, it is valid for usual recording devices in police-controlled telephone intercepts. In addition, our proposal allows for the introduction of relevant information such as the recording date and time and all the relevant data (this is not always possible with classical systems). Our experimental results reveal that the speech watermarking procedure does not interfere in a significant way with the posterior forensic speaker identification.
journal_name
J Forensic Scijournal_title
Journal of forensic sciencesauthors
Faundez-Zanuy M,Lucena-Molina JJ,Hagmüller Mdoi
10.1111/j.1556-4029.2010.01395.xsubject
Has Abstractpub_date
2010-07-01 00:00:00pages
1080-7issue
4eissn
0022-1198issn
1556-4029pii
JFO1395journal_volume
55pub_type
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journal_title：Journal of forensic sciences
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journal_title：Journal of forensic sciences
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journal_title：Journal of forensic sciences
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更新日期：2001-03-01 00:00:00
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