Simultaneous Interpretation
Equipment Solutions

Simultaneous Interpretation (​also known as Simultaneous Translation) is the real-time interpretation of spoken language by specialised conference interpreters who can interpret spoken words as they are being spoken. This allows delegates to understand the message without delay while preserving the natural flow of the event.

​Step 1: Floor Language is Spoken

The ‘floor language’, spoken by the guest speaker, conference lecturer, or main presenter, is transmitted wirelessly through the main microphone or ‘floor feed’ to the translation control room.

Step 2: Interpreters Listen

The control room is usually in a separate location in a soundproof interpreting/translation booth or sometimes at the back of the auditorium. From here, the interpreter or interpreting team listens to the content live as it is broadcast.

Step 3: Interpreting and Delivery

The content is concurrently replicated and interpreted by the interpreter(s) in the Interpretation booth, which is delivered wirelessly to the corresponding audience members through infrared headsets

Simultaneous interpretation is the real-time spoken delivery of a message from one language into another while the speaker is still talking. Translation refers to converting written text from one language to another. At multilingual events, simultaneous interpretation is used for live speeches, presentations, and discussions, while translation is typically used for documents, agendas, signage, and written event materials.

Interpretation booths are recommended for most professional simultaneous interpretation events because they help isolate sound, reduce distractions, and support clearer interpreted audio. They are especially important for conferences, government meetings, and any event where audio quality and interpreter working conditions matter. Congress Rental Australia interpretation booths are ISO 4043 compliant. See our Interpretation Booths page for more information.

Simultaneous interpretation usually requires interpreter booths, interpreter consoles, delegate receivers, headsets, and microphones for speakers. For larger or more complex events, the setup can also connect with conference microphone systems, venue audio, streaming platforms, and recording solutions. The right equipment will depend on your venue, audience size, number of languages, and whether your event is in-person, hybrid, or online.

Simultaneous interpretation is needed when your event includes speakers and attendees who use different languages and need live interpretation as the speaker is talking. It is ideal for conferences, multilingual meetings, seminars, and official events where delays would interrupt the flow of the program. This allows all participants to follow the event in real time and creates a smoother experience for both speakers and audiences.