There are several techniques that interpreters use depending on the type of interpreting required. Simultaneous interpretation allows the interpreter to translate simultaneously as the speaker talks. Consecutive interpretation involves the interpreter listening to a speaker and then translating their statements when the speaker pauses. Whispered interpretation involves simultaneously translating for a small audience. Sight translation requires orally translating the contents of a written document. Other techniques include over-the-phone, video, liaison, and medical interpretation.