" said Caleb, with his most peremptory intonation.
Now, though they had hardly spoken to each other all the evening, yet when Celia put by her work, intending to go to bed, a proceeding in which she was always much the earlier, Dorothea, who was seated on a low stool, unable to occupy herself except in meditation, said, with the musical intonation which in moments of deep but quiet feeling made her speech like a fine bit of recitative— "Celia, dear, come and kiss me," holding her arms open as she spoke.
He had caught the major's little idiosyncrasies of speech, accent, and intonation and his pompous courtliness to perfection—exaggerating all to the purposes of the stage.
Walters was very earnest of mien, and very sincere and honest at heart; and he held sacred things and places in such reverence, and so separated them from worldly matters, that unconsciously to himself his Sunday-school voice had acquired a peculiar intonation which was wholly absent on week-days.
As the words are taken from a database of speech fragments, it's very difficult to modify the voice, so adding things like intonation and emphasis is almost impossible.
But tests suggest they also notice the more subtle aspects of human communication - the emotional tone, intonation and volume changes that influence the meaning of language.
Alfred again spoke of Italy, and of the glorious colors in Italian scenery; the purple hills, the deep blue of the Mediterranean, the azure of southern skies, whose brightness and glory could only be surpassed in the north by the deep-blue eyes of a maiden; and he said this with a peculiar intonation; but she who should have understood his meaning looked quite unconscious of it, which also was charming.
