addressed or audiance

Well, I have nothing particular in my mind, but I need to describe who I am talking to, who I am addressing him/her. For example, I am talking to someone and want to say instead of "someone", use a proper word that describe the situation. And "audience" is about group of people not one or two. What kind of name or adjective would you use to describe that position?

"Interlocutor" is the technical, formal word.

So no specific word?

enoon"Interlocutor" is the technical, formal word.

I thought that means official speaker. Doesn't it?
(Another question, "Doesn't it" is correct, but what would you understand if I told "Isn't it", in informal speaking is it possible?)

youzouI thought that means official speaker. Doesn't it?

Not in this context. When you are talking with one other person, that person is your interlocutor.

For you to be able to say "Isn't it?", the first statement would have to have "to be" as the verb: "I thought that was an official speaker." It would sound funny otherwise.

All right, thanks. I was just wondering if it had somehow a sensible meaning. Thanks.

An "audience" can be any number of persons, even just one person: "She was my audience as I rehearsed my speech." It doesn't even have to be a person: "I rehearsed my speech in front of my dog. He made a good audience."

In fact, an audience doesn't even have to be animate: "I didn't have anyone to rehearse my speech in front of and so I went into the forest and rehearsed it to the trees. They were my audience."