Page last updated at 05:54 GMT, Friday, 30 May 2008 06:54 UK

Formula 'secret of perfect voice'

Dame Judi Dench
The perfect voice would have elements of Dame Judi Dench

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 research was conducted by