A speech always has an audience. An important part of analyzing a speech is to figure out who the audience groups are and consider what characterizes them. This is relevant for the analysis because a speaker will usually try to modify her message and her rhetorical devices to be appropriate for the intended audience.
In some contexts, you may also see the word receiver(s) being used to describe the audience of a speech. Receiver is a broader analysis term, as it can also be used about other non-fiction genres such as articles, essays or blog posts.
Who is the audience?
Sometimes the text of the speech itself will give you some information about its audience, especially if the speaker addresses them directly. In other cases, you may need to figure it out by reading between the lines, or by doing supplementary research.
There are usually a number of different audience groups for important speeches. In many cases, the true audience of a speech is much wider than the group which was physically present while the speech was made. For example, when an American President makes a speech to Congress, the audience will usually also include a large proportion of the general US population (or perhaps even the global population), as the speech will probably be broadcast on TV, streamed online, and subsequently published in newspapers.
Primary and secondary audience
As noted, speeches often target several different audience groups. George W. ...