TOP TIPS:
1) The key part of this question is 'create a sense of voice'. You must give at least three different voices which each authors uses, and how these help 'describe their experiences'.
2) In your introduction make sure you use MAPiT (Mode, Audience, Purpose, Tone). Mode: what type of text is it? (autobiography, speech etc), the Audience (if broadcasted on T.V, the text would have a large, possibly global audience), the Purpose of the text (think about when it was published, why was it written/ said) whilst linking back to the question, and Tone (descriptive words for how they speak: calm, interrogative, pessimistic). Don't forget to also use context (about the author, the time they were writing, key events).
3) Find ways you can compare the two texts, whether it's about their voice or social context.
4) Always link back to the question: HOW do they create VOICE? What techniques do they use? How does this affect the purpose of the text? Is this technique only effective because of the audience? Remember to use your knowledge of linguistic techniques, and EVALUATE their effectiveness using phrases like "the clever use of", "the interesting choice of", "it is worthy to note".
Example answer:
Texts:
1) an edited extract from the closing sections of the speech delivered in a South African court in 1964 by Nelson Mandela.
2) an extract from 'Mom & Me & Mom' by Maya Angelou
Whilst Angelou's autobiography has a reflective and personal tone, Mandela's speech has a more unifying and empowering tone. As an autobiography, Angelou, who's literature made way for her political roles in America, subtly describes her black African-American culture to an audience of predominantly white Americans. Throughout this extract we see Angelou shifting from a humorous tone, to confessional, to admiring and to reflective. Mandela's speech also looks at the themes of race and family but in a form of a speech. This genre means that he had to have an inspiring and powerful tone in order to convince his audience (the South American court). Mandela's inciting speech played a huge role on his political image, as South America was severely prejudice and discriminating in 1964. He proved to the white court that he is intelligent and has the skills needed to be involved in politics, even though he is black. Mandla creates an intelligent tone through the juxtaposition of abstract nouns in 'white supremacy implies black inferiority'. The pre-modifying adjectives 'white' and 'black' intensify the comment he is making on race in Africa, and the stative verb 'implies' shows an arguably philosophical tone from Mandela. The concrete noun 'whites' shows a malicious tone as it detaches them from the black Africans. It is interesting to note that, although Mandela is trying to unify the people in Africa, his use of the noun separates them in his speech; perhaps a technique used so that the court could understand how it felt to be labelled by your skin colour.