What literary term is in -the half-torpid man would be full of harmonious life just as a long-silent harp sound?

The phrase "the half-torpid man would be full of harmonious life just as a long-silent harp sound" contains a simile. A simile is a figure of speech that makes a direct comparison between two unlike things, using the words "like" or "as". In this case, the simile compares the man's transformation from a state of torpor to one of harmonious life to the sound of a long-silent harp.