The voice analysis, using specially designed software, compared both samples of ‘Josie’s’ voice; the one from the home video and the one used in the Garside spiritualist meeting. Three tests were carried out, firstly a sound spectrograph analysis (acoustic phonetic studies) then an average pitch analysis followed by a statistical analysis taken from a database with millions of voices, producing a percentage evaluation on a scale of 0 to 100.
Additionally, a forensic analyst made detailed comparisons of accent, syntax and breathing patterns.
The result was transmitted to DS Petra Collinson nine days later; it was more than 90% certain that the voice on the iPhone recording was not that of Josie Jowett.
‘s**t!’ she said and passed the report across to Shakira Amin.
‘So, where does this t
