Answer:
The sound device he uses in this excerpt is Alliteration.
Step-by-step explanation:
Alliteration is a set of words that sound the same way in the first consonant, and that appear together in a series.
In the poem Annabel Lee, which was Edgar Allan Poe's last complete poem, the author tries to show the purity of love and how it prevails even after the death of a person.
In the excerpt “In her sepulcher there by the sea— In her tomb by the sounding sea.” What is done is to connect the image of the sea, with the image of death, through the use of alliteration.