Recordings of speech and audio relating to crimes can come from a wide range of sources including: telephone calls to the emergency services, mobile telephone recordings, and covert recording devices. In many cases questions arise such as, who is the person speaking in the recording, is the recording genuine, what is being said, can the sound quality be improved? Forensic analysts are often consulted to address these questions and offer answers to assist the court and the legal system. This talk will introduce the different types of analyses undertaken and discusses some of the specific techniques used, including newer developments such as automatic speaker identification. The talk will be illustrated with examples from real cases.
Dr Jessica Wormald is a forensic consultant at J P French Associates, the UK’s longest established independent forensic laboratory specialising in the analysis of speech and audio recordings for legal proceedings. After completing a BA in English Language and Linguistics, she completed an MSc in Forensic Speech Science, and then went on to complete a PhD in Sociophonetics, all at the University of York. She has carried out research into new and developing accents in different locations in the UK, which utilised forensic methodologies as well as more innovative ultrasound and automatic methods.
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