Interpretation at a conference is not a line item added at the last moment, because it touches three things at once: the room it is built in, the equipment booked for it, and the people who need time to prepare. This is a guide for anyone planning a conference with an audience that does not speak the language of the platform.
Simultaneous or consecutive?
Simultaneous interpretation happens in the moment: the speaker talks and the interpreter talks with them from a soundproof booth, and the audience hears it through receivers. It adds no time to the programme, and suits long sessions, large rooms and multiple languages.
Consecutive interpretation happens in turns: the speaker talks, pauses, and the interpreter renders it. It needs no booths and no equipment, but it roughly doubles the length of a session. It suits small meetings, tours and site visits, and is impractical for a conference with a full programme.
The simple rule: if the programme is governed by a clock and cannot stretch, simultaneous is not a luxury — it is the only option.
What simultaneous interpretation actually needs
- A soundproof booth per language, positioned so the speaker and the screen are visible. An interpreter who cannot see the slides is translating half the message.
- A channel per language in the distribution system, and a receiver for every listener who needs one.
- A collection and return point for receivers at the entrance, with staff to run it — this is what gets forgotten, and people pile up at the door.
- A clean audio feed to the booth direct from the sound system, not a microphone hung in the air picking up room noise.
Interpreters: why one is not enough
Simultaneous interpretation is among the most mentally demanding tasks there is: listening, understanding, converting and speaking at once, without pause. Professional practice is for two interpreters to work in each booth and rotate at short intervals, because accuracy falls after a stretch of continuous work however capable the interpreter. Economising with a single interpreter for a long session does not save cost; it buys a decline in accuracy that shows in the second half of the session — usually the half where the important things are said.
What the interpreter needs from you beforehand
The biggest difference in interpretation quality is not made by the equipment but by preparation. An interpreter is not a dictionary; they are a specialist building a working glossary for your subject in advance. Send them, with enough time to spare:
- The presentations, even in draft.
- The texts of formal addresses where they exist — especially opening remarks, which are the most formal and the least likely to be improvised.
- Names of people and organisations with their correct titles; getting a guest’s name wrong lands harder than getting a term wrong.
- Technical terms and acronyms specific to your sector.
- The session schedule with speaker names and their languages.
Material that arrives hours before the event has not really arrived: preparation needs time, exactly like the build.
Common and costly mistakes
- Booking interpretation after choosing the venue. Some rooms cannot take booths, or have no position from which the interpreter can see the platform. Ask before you sign for the venue.
- Forgetting questions from the floor. The speaker is interpreted and audience interventions are not, so half the exchange is lost. Floor microphones must reach the booth too.
- A speaker reading from a script at speed. Read text runs far faster than natural speech and is much harder to interpret. Briefing speakers on this before they go up is free and improves the result more than any piece of equipment.
- Neglecting receiver recovery. Receivers leave with the guests unless there is a procedure to get them back, and the cost doubles.
In short
Interpretation is bought once and judged for the length of the event. The highest-return investment in it is not in equipment but in two things that do not cost much: enough interpreters, and preparation material that reaches them early.
See our audio and interpretation services, or book them for your event.