Route LL-TTS to Wireless Headsets with 4ALL Signal

Send one or more live translated-language feeds from 4ALL Signal to a compatible venue wireless system.

Written By 4ALL.LIVE

Last updated About 23 hours ago

Route each required LL-TTS language from 4ALL Signal through a dedicated physical output to a compatible venue-approved wireless listening system.

Best for: production teams delivering translated speech to managed attendee receivers and headsets.

Use the supported topology

isolated presenter/program audio → 4ALL translation and LL-TTS → 4ALL Signal TTS node → optional gain/limiter/metering → dedicated physical audio-interface output → compatible venue-approved wireless-transmitter channel → attendee receiver/headset

Boundary: Signal stops at the workstation or physical audio-interface output. It does not configure or include the transmitter, RF frequencies, receivers, headsets, cabling, charging, sanitation, distribution or return process, venue approval, or technicians.

Build and rehearse the route

  1. Isolate the presenter or program audio. Confirm a clean post-DSP meter and keep independent rooms or programs on separate source and event paths.
  2. Enable and preflight LL-TTS in Live Setup, including entitlement, provider and language support, credentials, wallet, caps, and an active recording session.
  3. Keep the designated producer browser open, awake, connected, holding the producer lease, and actively publishing.
  4. Authorize Signal, confirm the correct organization and team, and verify the workstation is Licensed.
  5. Create one Signal TTS node for each language that needs an independently routed path. Select the authorized event and server-advertised language.
  6. Add gain, limiter, and meters if required, preserving headroom and listening for artifacts.
  7. Route each language to its own dedicated physical audio-interface channel.
  8. Connect and label each interface output to the matching transmitter input under the approved venue plan.
  9. Validate receiver tuning, coverage, battery, headset, and attendee channel selection where the external system supports that channel model.
  10. Rehearse the complete chain with representative speech, locations, listeners, and fallbacks.

Handle floor audio and captions

The original or floor-audio channel normally comes directly from the venue mixer. A Signal TTS node supplies a synthesized target-language feed; it is not a floor-audio pass-through.

Captions, QR viewer text, and LL-TTS can share the same source audio but remain parallel paths. Extended Screen is a text destination, not an RF or spoken-audio output.

Verify the complete chain

  • Each Signal node reaches Streaming for the correct event and language.
  • Each local meter and dedicated interface channel carries only its labeled language.
  • Each transmitter input and receiver channel matches that label.
  • Receivers work across the approved coverage area with charged batteries and clean headsets.
  • The venue mixer supplies floor audio according to the independent production plan.

Troubleshoot

  • Signal silence: check source demand, publisher, event, language, status, graph, meter, and interface channel.
  • Interface clean but receiver silent: inspect the transmitter input, selected channel, RF path, receiver tuning, battery, and headset.
  • Wrong language: trace labels from TTS node through output, transmitter input, and receiver selection.
  • Mid-show failure: activate the approved fallback; do not redesign topology or change providers on air.

Capacity and compliance boundary

Multiple identical event and language nodes in one Signal process can share a receive session, but a 4ALL team member must validate workstation, license, and I/O capacity. Do not guarantee hardware compatibility, RF coverage, legal assistive-listening compliance, staffing, or availability.