Understanding is not conveyed solely through clear diction but has a lot to do with the language used.

He was known to bring a musical intelligence and uncommonly clear diction to his work.

This is more than a matter of clear Italian diction.

Many singers think that projecting text is mostly a matter of clear diction.

She sings with an unmistakable clear diction which is rare these days in music.

Her voice is a powerful alto with exceptionally clear diction.

A voice that was well educated, with smooth, clear diction, perhaps even a touch of the Brit in it.

Credit goes to everyone for such clear English diction.

Her voice was described as a "beautiful mezzo-soprano with clear diction and a good feel for melody".

Her voice was warm velvet, her diction clear and perfect.