It is used when one person is speaking to a group of people and there is very little back and forth conversation. Most often, there are at least two interpreters per language pair. The interpreters work in a soundproof booth and use receiving/transmitting equipment to both listen to the speaker and convey the speech in the audience's language. The audience wears portable receiving equipment and hears the speech in their language at the same time the speaker is rendering the message in his or her language. This type of interpreting is most often used in large training sessions and in conference settings. In cases where a small group of people is involved, we can provide portable electronic equipment. It is used when one person is speaking to a group of people and there is very little back and forth conversation.