Leonardo Da Vinci’s famous portrait of the Mona Lisa has a mysterious smile.

It will always remain a mystery, but it is possible to hear

what her voice would have sounded like, thanks to a Japanese sound expert.

Dr Matsumi Suzuki generally uses his skills to help with criminal investigations.

But now he and his team are trying to create the voice of Mona Lisa.

They have measured the face and hands in the picture and estimated her height.

They have created a model of her skull. " Once we have that,

we can create a voice similar to that person, " Suzuki said.

Leonardo Da Vinci’s famous portrait of the Mona Lisa has a mysterious smile.

It will always remain a mystery, but it is possible to hear