Simultaneous interpretation is a type of real-time interpreting that happens without the involvement of the original speaker. Simultaneous interpreters sit in a sound-proof booth and interpret in real-time; listeners hear the simultaneous translation via headphones.
   Simultaneous interpreting is frequently used in high level international meetings such as multinational annual general meetings, international product launches and global sales presentations. A good example of events where simultaneous translators are used are United Nations conferences.
    Simultaneous interpreting is highly skilled work, requiring many years of experience and subject matter expertise. Events that require simultaneous translation need careful planning and specialist equipment.