In simultaneous interpreting the information is translated in real time. The interpreter usually translates the information in a soundproof booth at the same time as it is spoken. He/She receives the information through a headset and translates the message into a microphone. This type of interpreting is typical of conferences and such bigger events where the audience does not share a common language.
Consecutive interpreting is performed after the speaker has finished his/her sentence. The speaker pauses for a moment while the interpreter translates what he/she just said. No equipment is necessary but it must be said that this form of interpreting increases the length of the event. This type of interpreting is typical of meetings or smaller events.