Tennis fans who have suffered years of headaches from the incessant grunting of top players have finally got their wish - a device that fades out the squeals.

As a result of complaints about ear-piercing screams, the BBC has produced a noise-reduction programme called Wimbledon Net Mix, which allows internet users to turn down howling and increase commentary volume.

Wimbledon bosses have also admitted that the grunting of top tennis stars like Maria Sharapova, whose record-breaking screams often exceed 100 decibels, do make millions unhappy and want it reduced.