Simultaneous Interpreting
The interpreter speaks at the same time as the source–language speaker and interprets the speech from a sound–proof booth speaking into a microphone to the conference members who are listening with earphones.
Consecutive interpreting
In consecutive interpretation, interpreting is performed consecutively, i.e. the interpreter listens to some sentences and then summarises the message and interprets the text in a streamlined and well structured manner. In unilateral consecutive interpretation, the interpreter only interprets into one language and the source text passages are rather longer (generally up to 10 minutes). In bilateral consecutive interpretation, or liaison interpreting, the interpreter interprets into both languages and enables communication between two conversational partners, for example in an interview or negotiation.
Whispered interpreting
Whispered interpretation (a.k.a. "chuchotage" interpretation after the French word for the same) is a special form of simultaneous interpretation which requires no equipment. Chuochotage interpretation is performed for a maximum of two persons. The interpreter sits next to, or behind, the intended audience, whispering a simultaneous interpretation.