Materials on forensic audio and technical video examinations, questions for the expert, preparation of recordings and report reviews.
The time displayed in camera footage, the file date and the timestamp of a message in a messaging app may refer to different events. Before concluding that a recording is inconsistent, it is useful to establish exactly what each indicator represents and what transformations the file has undergone.
Read the guide →
A recording received through a messaging app may already be a transformed version of the source file. For examination, it is important to preserve the available source and transmission history, rather than merely…
Read article →The tasks addressed by the examination, the objects examined and how forensic audio examination differs from technical video examination.
How to pose questions about voice, speech, an audio recording, background noise, signs of alteration and recording suitability.
How to formulate questions about video footage, editing, continuity, the recording device, start and end times, and events in the video.
What to provide: the source file, storage medium, recording device, voice samples, start and end times, documents and explanations.
Why it is important to examine both the content and the technical signs of file creation, alteration and copying.
Errors that occur in reports on voice, sound, video images and recording traces.
You may send an audio or video file, a link, an investigative order, a court ruling, draft questions or an existing report for review.
