Read the poem silently to yourself, and then read it aloud. This will help you to identify with the actual sounds of the poem. Repeat if necessary.
Read each line separately, searching for the emotion or feeling being communicated through the poem's language.
Consider the various degrees of thought and complexity within the language of the poem. Is the poet speaking in character or in his or her own voice? For example, are the words from an object rather than a human, such as a leaf describing its own descent?
Determine if the poet is speaking as an individual or on behalf of a great audience.
Gather your thoughts and ideas, and write them down on a piece of paper. Based on your own research and analysis, draw a conclusion determining the voice of your poem.