Linguists believe the man is probably from southern England or London . Multicultural London English ' Another expert , Paul Kerswill , a linguistics expert at the University of York , said the accent sounded English but was one that could be described as `` multicultural London English . '' Intelligence experts may be comparing voice to recordings of speech . He may have been influenced by a multicultural background . Experts may use computers to match pitch , volume , rhythm to another voice .
Linguists believe the man is probably from southern England or London . Intelligence experts may be comparing voice to recordings of speech . He may have been influenced by a multicultural background . Experts may use computers to match pitch , volume , rhythm to another voice .