Prelude. Just before the battle, Grant had captured Jackson, Mississippi, and Pemberton retreated to the west. Attempts to stop the Union advance at Champion Hill and Big Black River Bridge were unsuccessful.
The point of view is that of the first person. Poe decided to write 'The Tell-tale Heart' from the point of view of the young man that is living with the old man. Through this poem, the narrator tells us how he isn't mad or insane, but how it takes cunning to kill the old man he's living with.
This gives you another image of what the sound was like being referred to something else. As a final point, Poe uses italics and similes because they stress the point clearly. In conclusion, Poe uses a variety of techniques to create suspense in the Tale Tell Heart. These are - use of repetition, punctuation, how he uses first person, sound, imagery, tension, his use of time and italics and similes.