Simultaneous translation (also known as conference interpretation or simultaneous interpretation) orally translates the speech of a speaker into the language of one or more listeners.
This mode of translation, as the name itself already says, happens at the same time as the speaker speaks. It seeks to enable people who speak different languages to have the same experience at the same time without any linguistic barriers.
Simultaneous translation is done in a soundproof booth, and the interpreter hears the speaker through a headset and through a microphone, transmits the words to the participants (who in turn hear through receivers).
Simultaneous translators or simultaneous interpreters are professionals fluent in their working languages and are trained in communication, interpretation and translation techniques.