Running a multilingual church service without a booth

For decades, translating a service meant hardware: a soundproof booth, a stack of receivers at the door, and a volunteer willing to whisper into a headset for an hour straight. It worked, but the gear was expensive and every additional language meant finding another interpreter, which capped how many languages you could realistically offer.

You don't need any of it anymore. A multilingual service now runs on one phone at the front and a QR code in the bulletin.

The setup

Point a phone or laptop at your speaker's microphone feed and start a BabelCast session. Pick the languages your congregation actually speaks. That's the whole broadcast side; there are no receivers to charge and no booth to build.

• One device at the front, plugged into the sound system you already have.
• A QR code printed in the bulletin or shown on a screen.
• Every language you selected, live at the same time.

What the congregation does

People scan the code, pick a language, and put in their own earbuds. They hear a natural translated voice and can read captions at the same time. Nobody installs anything, and nobody has to ask for a receiver at the door. That second part matters more than it sounds; plenty of visitors would rather miss the sermon than flag down an usher. If you run sanctuary screens, the same session feeds those too; see putting captions into OBS and ProPresenter.

If a volunteer can't run the setup cold, it won't survive to the third Sunday. This one is a phone and a QR code.

Start a few minutes early and test one language from a second phone in the back row. When the service ends, close the session. The meter follows the speech we actually detect, never the number of people listening. (Here's exactly how the meter works.)