Analysis of voice and speech patterns across recordings to assess the strength of evidence that a voice in a recording belongs to a known speaker; also called forensic voice comparison or voice recognition.
The production of transcripts of usually poor quality or covert recordings for investigative or evidential purposes.
Questioned utterance analysis
When evidential transcripts cover a very key or unclear section of speech, detailed acoustic analysis can help to establish what has been said in a specific area of a recording.
Analysis of recordings of an unknown speaker to reveal information about regional or language background, or any other aspects of identity which may be apparent from speech.
Consultation and advice in relation to assessing the ability of witnesses to recognise voices.