Nao Tokui, an enthusiast from Japan, decided that famous art masterpieces would only win if they are followed by a proper background sounds, so he made his own program that uses neural network technology to analyze the pictures and play sounds that are appropriate. For example, if a sea is depicted, it plays sounds of waves; if there are people on it, indistinct voice recordings, and so on.
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It didn't require much effort — he used a neural network Soundnet which, by analyzing thousands of videos, learned to detect certain objects on them, and to correspond the visuals to sounds. He also used a free online picture gallery and sound bank.