Sound effects in The Raven

Poe used many sound effects, including but not limited to, onomatopoeia, alliteration and rhyme. He used a very obvious rhyme, the -ore rhyme. Lenore, Nevermore, more, shore, etc. Just about every sentence ends with ore. He also uses other rhymes like tapping, rapping, or December, ember. Also, he used alliteration in his poem, such as weak and weary, flirt and flutter, stopped or stayed, etc. Finally, he used onomatopoeia, such as tapping, muttered, fluttered, etc. to express the actual sound in the scene.  The unique combination of those makes the Raven sound more like a song than like a poem. There are a even distribution of internal rhymes and the most frequent end rhyme ore. When read aloud, this make the reader want to continue as it is pretty interesting to do so. It makes reading a rhyme as interesting as singing a song (Disclaimer: This statement does not involve any personal preference or more exactly, I don't feel this way).  The sounds also contribute to the reader's mind projection of the scene. Unlike movies, books/poems does not give rigid detail to everything. Thus, the scene is up to the readers to elaborate, and the sound effects, especially onomatopoeia, suggests a more complete scene for the readers to imagine.