Source: BBC, May 2008
Researchers say they have worked out a mathematical formula to find the perfect human voice.
The study, commissioned by Post Office Telecoms, asked people to rate 50 voices then analysed the results.
It found the best female voice to be a mixture of Mariella Frostrup, Dame Judi Dench and Honor Blackman. Alan Rickman and Jeremy Irons did best for the men.
the ideal voice should utter no more than 164 words per minute and pause for 0.48 seconds between sentences. Sentences themselves should fall rather than rise in intonation.
Actor Jeremy Irons came very close to the ideal voice model, speaking at 200 words per minute and pausing for 1.2 seconds between sentences.