Computers Sing a Beautiful tune
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Computers sing to a better tune

Now, Akio Watanabe and Hitoshi Iba have turned to evolution to help them devise a novel algorithm that compares the frequency curves from real human performances and uses them to home in on a more realistic curve to apply to the synthetic song. The team has simplified the optimization process for creating vocal frequency curves and have developed a frequency model that can emulate human expression in a synthetic vocal. (read more)