Bruce E. Koenig is the senior examiner and founder of BEK TEK LLC. He has been involved in the Forensic Analysis of Audio and Video Recordings on a full-time basis since 1974. Mr. Koenig & his associates conduct forensic examinations of audio, video & still images (e.g. JPEG) media to authenticate, improve voice intelligibility, identify/classify voice and non-voice signals, compare voice samples, and enhance video & images.
On-Site Evaluations of Acoustical Sounds and EnvironmentsPrepares TranscriptionsPresents Expert TestimonyAssists Attorneys in Preparing for Cross-Examination of Opposing ExpertsEvaluates Appropriate Recording and Analysis EquipmentProvides Forensic Training in Audio/Video AnalysisConducts Research Regarding Forensic Applications
The formal procedures for the scientific authentication of audio media in investigative matters and legal proceedings have been updated as a result of the widespread conversion from analog to digital technology since the 1990s.
A protocol is described to improve the voice intelligibility of investigative and other forensic audio recordings collected via digital recording systems, whether audio only or audio/video units.
Authenticity examinations of VHS (video home system) cassettes are commonly performed in forensic laboratories and can usually determine whether a submitted recording is original, continuous, and unaltered. One of the important determinations of this analysis is identifying any portions that have been recorded over