scholarly journals Forensic Diagnostics of the Circumstances of Digital Video and Audio Production: Analytical Review

2017 ◽  
Vol 12 (1) ◽  
pp. 48-71
Author(s):  
M. A. Voznyuk ◽  
Yu. A. Denisov

The analytical review examines the issues of forensic investigation into the circumstances of production of digital video and audio recordings. The paper presents the organization and lines of inquiry in forensic analysis of video and audio evidence, computer forensics, forensic linguistics, and psychological evaluation established in the system of forensic science organizations of the Russian Ministry of Justice by 2013–2016. The analysis covers the issues of independent or integrated application of the listed types of special knowledge in order to meet the discipline-specific and comprehensive objectives of determining the circumstances of video/audio production. General strategies and types of forensic diagnostics of production circumstances are discussed without too much emphasis on the methodological minutiae of every stage of the investigation.

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Ashwini Tiwari ◽  
Daniel Whitaker ◽  
Shannon Self-Brown

Purpose Two common methods in community settings of assessing program fidelity, a critical implementation component for program effectiveness, are video and audio recordings of sessions. This paper aims to examine how these two methods compared when used for a home-based behavioral parenting-training model (SafeCare®). Design/methodology/approach Twenty-five SafeCare video-recorded sessions between home visitors and parents were scored by trained raters either using the video or audio-only portions of recordings. Sessions were coded using fidelity checklists, with items (n = 33) classified as one of two fidelity aspects, content [delivery of program components (n = 15)], or process [communication and rapport building (n = 11)]. Seven items were considered to overlap between constructs. Items were coded as having been done or not done appropriately. Coders rated items as “technological limitation” when scoring methods hindered coding. Analyses compared percent agreement and disagreement between audio and video coders. Findings Overall agreement between coders was 72.12%. Levels of agreement were higher for content items (M = 80.89%, SD = 19.68) than process items (58.54%, SD = 34.41). Disagreements due to technology limitations among audio coders were noted among 15 items; particularly, higher levels of disagreement were seen among process items (42.42%) than content items (9.64%). Originality/value Compared to video, fidelity monitoring via audio recordings was associated with some loss of process-related fidelity. However, audio recordings could be sufficient with supplements such as participant surveys, to better capture process items. Research should also examine how content and process fidelity relate to changes in family behavior to further inform optimal fidelity monitoring methods for program use.


2011 ◽  
Vol 3 (3) ◽  
pp. 1-18 ◽  
Author(s):  
John Haggerty ◽  
Alexander J. Karran ◽  
David J. Lamb ◽  
Mark Taylor

The continued reliance on email communications ensures that it remains a major source of evidence during a digital investigation. Emails comprise both structured and unstructured data. Structured data provides qualitative information to the forensics examiner and is typically viewed through existing tools. Unstructured data is more complex as it comprises information associated with social networks, such as relationships within the network, identification of key actors and power relations, and there are currently no standardised tools for its forensic analysis. This paper posits a framework for the forensic investigation of email data. In particular, it focuses on the triage and analysis of unstructured data to identify key actors and relationships within an email network. This paper demonstrates the applicability of the approach by applying relevant stages of the framework to the Enron email corpus. The paper illustrates the advantage of triaging this data to identify (and discount) actors and potential sources of further evidence. It then applies social network analysis techniques to key actors within the data set. This paper posits that visualisation of unstructured data can greatly aid the examiner in their analysis of evidence discovered during an investigation.


Author(s):  
Jim Fraser

‘Crime scene management and forensic investigation’ shows how the actions of investigating officers at a crime scene can affect the availability and efficacy of forensic tests later in the investigation. The purpose of crime scene management is to control, preserve, record, and recover evidence and intelligence from the scene of an incident in accordance with legal requirements and to appropriate professional and ethical standards. Any items removed from a scene by investigators must be packaged and labelled correctly to prevent contamination and minimize damage. Once forensic analysis begins, it is essential to consider the investigative implications of actions and decisions. It is sometimes more effective, quicker, or convenient to bring the specialist to the crime scene.


Author(s):  
Khidir Mohamed Ali ◽  
Thomas Owens

As a starting point for the development of a common visualization of the forensics process by the members of an investigating team, this chapter provides algorithms that provide guidance and step by step instructions on how to deal with computer forensics and the investigations they carry out. A general introductory overview of computer forensics is provided, and the framework of a forensic investigation is summarized. On the basis of this framework, three algorithms are provided, one for each phase of a forensic investigation, which cover the different aspects of computer forensics and address key elements to be considered when attacked systems are investigated.


1995 ◽  
pp. 241-252 ◽  
Author(s):  
D. D. Kandlur ◽  
M. H. Willebeek-LeMair ◽  
T. P. Barzilai ◽  
Z.-Y. Shae ◽  
J.-T. Liu

Author(s):  
John D. Niles

The human capacity for oral communication is superbly well developed. While other animals produce meaningful sounds, most linguists agree that only human beings are possessed of true language, with its complex grammar. Moreover, only humans have the ability to tell stories, with their contrary-to-fact capabilities. This fact has momentous implications for the complexity of the oral communications that humans can produce, not just in conversation but also in a wide array of artistic genres. It is likewise true that only human beings enjoy the benefits of literacy; that is, only humans have developed technologies that enable the sounds of speech to be made visible and construed through one or another type of graphemic representation. Although orality is as innate to the human condition as is breathing or walking, competence in literacy requires training, and it has traditionally been the accomplishment of an educated elite. Correspondingly, the transmutation of oral art forms into writing—that is, the production of what can be called “oral literature”—is a relatively rare and special phenomenon compared with the ease with which people cultivate those art forms themselves. All the same, a large amount of the world’s recorded literature appears to be closely related to oral art forms, deriving directly from them in some instances. Literature of this kind is an oral/literary hybrid. It can fittingly be called “literature of the third domain,” for while it differs in character from literature produced in writing by well-educated people, the fact that it exists in writing distinguishes it from oral communication, even though it may closely resemble oral art forms in its stylized patterning. Understanding the nature of that hybridity requires an engagement not just with the dynamics of oral tradition but also with the processes by which written records of oral art forms are produced. In former days, this was through the cooperative efforts of speakers, scribes, and editors. Since the early 20th century, innovative technologies have opened up new possibilities of representation, not just through print but also through video and audio recordings that preserve a facsimile of the voice. Nevertheless, problems relating to the representation of oral art forms via other media are endemic to the category of oral literature and practically define it as such.


SMPTE Journal ◽  
1996 ◽  
Vol 105 (8) ◽  
pp. 479-482
Author(s):  
Keith Y. Reynolds

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