Digital Audio Forensics Fundamentals

Digital Audio Forensics Fundamentals offers an accessible introduction to both the theory and practical skills behind this emerging field of forensic science. Beginning with an overview of the history of the discipline, the reader is guided through forensic principles and key audio concepts, before being introduced to practical areas such as audio enhancement, audio authentication, and the presentation of reports. Covering all aspects of audio forensics from the capture to the courtroom, this book is pivotal reading for beginners entering the field, as well as experienced professionals looking to develop their knowledge of the practice.

This book provides an expert introduction to audio forensics, an essential specialty in modern forensic science, equipping readers with the fundamental background necessary to understand and participate in this exciting and important field of study. Modern audio forensic analysis combines skills in digital signal processing, the physics of sound propagation, acoustical phonetics, audio engineering, and many other fields. Scientists and engineers who work in the field of audio forensics are called upon to address issues of authenticity, quality enhancement, and signal interpretation for audio evidence that is important to a criminal law enforcement investigation, an accident investigation board, or an official civil inquiry. Expertise in audio forensics has never been more important. In addition to routine recordings from emergency call centers and police radio dispatchers, inexpensive portable audio/video recording systems are now in widespread use. Forensic evidence from the scene of a civil or criminal incident increasingly involves dashboard recorders in police cars, vest-pocket personal recorders worn by law enforcement officers, smart phone recordings from bystanders, and security surveillance systems in public areas and businesses. Utilizing new research findings and both historical and contemporary casework examples, this book blends audio forensic theory and practice in an informative and readable manner suitable for any scientifically-literate reader. Extensive examples, supplementary material, and authoritative references are also included for those who are interested in delving deeper into the field.

This practical and accessible textbook/reference describes the theory and methodology of digital forensic examinations, presenting examples developed in collaboration with police authorities to ensure relevance to real-world practice. The coverage includes discussions on forensic artifacts and constraints, as well as forensic tools used for law enforcement and in the corporate sector. Emphasis is placed on reinforcing sound forensic thinking, and gaining experience in common tasks through hands-on exercises. This enhanced second edition has been expanded with new material on incident response tasks and computer memory analysis. Topics and features: Outlines what computer forensics is, and what it can do, as well as what its limitations are Discusses both the theoretical foundations and the fundamentals of forensic methodology Reviews broad principles that are applicable worldwide Explains how to find and interpret several important artifacts Describes free and open source software tools, along with the AccessData Forensic Toolkit Features exercises and review questions throughout, with solutions provided in the appendices Includes numerous practical examples, and provides supporting video lectures online This easy-to-follow primer is an essential resource for students of computer forensics, and will also serve as a valuable reference for practitioners seeking instruction on performing forensic examinations. Joakim Kävrestad is a lecturer and researcher at the University of Skövde, Sweden, and an AccessData Certified Examiner. He also serves as a forensic consultant, with several years of experience as a forensic expert with the Swedish police.

Over the past several years, myriad manuals on crime scene investigations have been published with each focusing on select, or partial, aspects of the investigation. Crime scene investigation, done right, is a multi-faceted process that requires various forms of evidence to be collected, examined, and analyzed. No book available has addressed procedures to present global best practices by assembling a collection of international experts to address such topics. Manual of Crime Scene Investigation is a comprehensive collaboration of experts writing on their particular areas of expertise as relates to crime scenes, evidence, and crime scene investigation. The book outlines best practices in the field, incorporating the latest technology to collect, preserve, and enhance evidence for appropriate analysis. Various types of forensic evidence are addressed, covering chain of custody, collection, and utility of such evidence in casework, investigations, and for use in court. The approach, and use of international contributor experts, will appeal to a broad audience and be of use to forensic practitioners, and the forensic science community worldwide. Key features: • Assembles an international team of contributing author experts to present the latest developments in their crime scene field of specialty • Examines global best practices and what are consistently the most reliable tactics and approach to crime scene evidence collection, preservation, and investigation • Provides numerous photographs and diagrams to clearly illustrate chapter concepts Manual of Crime Scene Investigation serves as a vital resource to professionals in police science and crime scene investigations, private forensic institutions, and academics researching how better real-world application of techniques can improve the reliability and utility of evidence upon forensic and laboratory analysis.

Because it makes the distribution and transmission of digital information much easier and more cost effective, multimedia has emerged as a top resource in the modern era. In spite of the opportunities that multimedia creates for businesses and companies, information sharing remains vulnerable to cyber attacks and hacking due to the open channels in which this data is being transmitted. Protecting the authenticity and confidentiality of information is a top priority for all professional fields that currently use multimedia practices for distributing digital data. The Handbook of Research on Multimedia Cyber Security provides emerging research exploring the theoretical and practical aspects of current security practices and techniques within multimedia information and assessing modern challenges. Featuring coverage on a broad range of topics such as cryptographic protocols, feature extraction, and chaotic systems, this book is ideally designed for scientists, researchers, developers, security analysts, network administrators, scholars, IT professionals, educators, and students seeking current research on developing strategies in multimedia security.

Working with the Web Audio API is the definitive and instructive guide to understanding and using the Web Audio API. The Web Audio API provides a powerful and versatile system for controlling audio on the Web. It allows developers to generate sounds, select sources, add effects, create visualizations and render audio scenes in an immersive environment. This book covers all essential features, with easy to implement code examples for every aspect. All the theory behind it is explained, so that one can understand the design choices as well as the core audio processing concepts. Advanced concepts are also covered, so that the reader will gain the skills to build complex audio applications running in the browser. Aimed at a wide audience of potential students, researchers and coders, this is a comprehensive guide to the functionality of this industry-standard tool for creating audio applications for the web.

Drum Sound and Drum Tuning assists drummers, sound engineers, and music students in learning critical skills related to drum sound and achieving an optimised and personalised drum kit set-up. The book covers the essential theories of percussion acoustics and develops this knowledge in order to facilitate creative approaches to drum tuning and professional-level recording and mixing of drums. All aspects of drumhead vibration, drumhead equalisation, and resonant drumhead coupling are de-mystified, alongside discussions relating to drumhead types, drum shell vibration, and tuning to musical intervals for different performance genres. The book develops drum sound theory and creative analysis into a detailed dissection of recording and production techniques specifically for drums, including discussions on studio technologies, room acoustics, microphone techniques, phase coherence, and mixing drums with advanced digital audio workstation (DAW) techniques and creative processing tools. Drum Sound and Drum Tuning includes many practical hands-on exercises that incorporate example tutorials with Logic Pro and iDrumTune Pro software, encouraging the reader to put theory into immediate creative practice and to develop their own listening skills in an informed and reflective manner. The book also documents primary interviews and opinion from some of the world’s most celebrated drummers, music producers, and sound engineers, enabling the reader to connect the relevant theories with real-world context, whilst refining their own personalised approach to mastering drum sound.