The Question and Answer section for The Tempest is a great resource to ask questions, find answers, and discuss the novel.
Unfortunately I'm not trained as an actor. I would think Prospero would have a deep booming voice with a magician-like authoritarian tone to it.
While the men are drinking, Caliban talks about Prospero's tyranny, followed by Ariel's appearance, and her additional comments that are meant to further rile up the group. In the end, Caliban hatches a plot to murder Prospero, promising Stephano...
Which quotations from The Tempestmost clearly show how Shakespeare portrays Prospero’s transformation from someone who wants revenge to someone who understands that certain powers over others are too strong to use?
Though with their high wrongs I am struck to th’ quick,
Yet with my nobler reason ’gainst my fury
Do I take part: the rarer action is
In virtue than in vengeance: they being penitent,
The sole drift of my purpose doth extend
Not a frown further. Go...