#hey do you support realtime noise cancellation , I see voice separation here https://elevenlabs.io

1 messages · Page 1 of 1 (latest)

round fernBOT
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AI-generated Answer for mohammedibrahim_56690

Short answer

  • Yes for live Agents in the browser: use WebRTC. Our WebRTC connection provides built-in echo cancellation and background noise removal for agent calls. (elevenlabs.io)

How to enable it

  • In the ElevenLabs React SDK, start the session with connectionType set to "webrtc" (instead of "websocket"). This routes audio over WebRTC and activates the browser’s real‑time audio processing. (elevenlabs.io)

About Voice Isolator

  • Voice Isolator is a post‑processing tool/API for uploaded files (up to 500 MB / ~1 hour) and is not an interactive real‑time feature. Cost is 1,000 credits per minute. (help.elevenlabs.io)

If you need programmatic noise removal outside live calls

  • Use the Audio Isolation API. It supports a streaming endpoint that removes background noise while returning output as it’s processed (still an HTTP stream over a file upload, not a live mic session). (elevenlabs.io)

Notes

  • The WebRTC path is the documented way to get real‑time noise suppression with ElevenLabs Agents; the WebSocket Agents API does not document built‑in noise suppression. Use WebRTC for best results. (elevenlabs.io)

Related references

  • Realtime STT (Scribe v2 Realtime) and Agents are designed for low‑latency conversational use; pair this with WebRTC for clearer input in noisy environments. (elevenlabs.io)

Sources:
ElevenLabs Conversational AI now supports WebRTC
React SDK | ElevenLabs Documentation
What is Voice Isolator? – ElevenLabs
Audio isolation stream | ElevenLabs Documentation
ElevenLabs Conversational AI now supports WebRTC
Scribe v2 Realtime Speech to Text - 150ms Latency API

real cape
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I have calls arriving from twilio

round fernBOT
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AI-generated Answer for mohammedibrahim_56690

Got it. If your inbound calls are landing in Twilio, you can connect them to ElevenLabs Agents in two supported ways:

  • Native Twilio integration (simplest)

    • In Agents Platform > Phone Numbers, import your Twilio number using your Account SID/Auth Token, then assign an agent. Purchased Twilio numbers support inbound+outbound; verified caller IDs are outbound-only. ElevenLabs auto‑configures the Twilio number. (elevenlabs.io)

  • Keep your Twilio webhooks (advanced, full control)

    • Point your Twilio Voice webhook to your server; on each call, call ElevenLabs’ register call endpoint. We return TwiML that bridges the call to your agent over WebSocket. Configure the agent for ÎĽ-law 8000 Hz input and TTS output. Note: call transfer isn’t available in this mode. (elevenlabs.io)

About noise suppression with Agents:

  • Voice Isolator is a file-based/offline tool (not real-time). There isn’t a real-time noise‑suppression toggle for PSTN/Twilio calls in Agents today. (elevenlabs.io)
  • For live echo cancellation and noise removal, our WebRTC path provides these enhancements (intended for web/app clients, not PSTN via Twilio). (elevenlabs.io)
  • Our real-time ASR (Scribe v2 Realtime) is optimized for live use, includes VAD, and supports ÎĽ-law inputs commonly used in telephony. (elevenlabs.io)

Would you like to use the native integration or keep your existing Twilio webhook flow via the register-call endpoint?

Sources:
Twilio native integration | ElevenLabs Documentation
Register Twilio calls | ElevenLabs Documentation
Voice isolator | ElevenLabs Documentation
ElevenLabs Conversational AI now supports WebRTC
Introducing Scribe v2 Realtime

wild bane
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So we are stuck with an agent that is getting interrupted by any noise out there, and maybe is not even ending the call dues to background noises.

round fernBOT
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AI-generated Answer for parintele_damaskin

Short answer: ElevenLabs Agents don’t provide real-time noise suppression today. Voice Isolator is a file-based post‑processing tool (upload/record → process), not a streaming/noise-cancellation feature for live calls. (elevenlabs.io)

To prevent background noise from interrupting or prematurely ending Twilio calls, use these Agent settings/tools:

  • Disable interruptions (barge‑in) so incidental noise can’t cut off your agent mid‑sentence. Configure under Agents > Conversation flow > Interruptions. (elevenlabs.io)
  • Make turn‑taking less aggressive: set Turn eagerness to Normal or Patient, and lengthen Turn timeout (1–30 s) so brief noisy pauses don’t trigger a response or end‑of‑turn. (elevenlabs.io)
  • Control hangups explicitly with the End Call system tool (e.g., require an explicit “goodbye” or task completion before ending). (elevenlabs.io)
  • Enable Voicemail detection so the agent doesn’t mis-handle IVRs/voicemail greetings as user speech. (elevenlabs.io)

Twilio specifics:

  • Ensure your agent’s input/output audio is set to ÎĽ-law 8000 Hz when connecting via Twilio, per the Register Call/TwiML workflow. Using the correct telephony format avoids unnecessary transcoding artifacts that can worsen VAD behavior. (elevenlabs.io)

If you need tighter control over speech detection in noisy lines:

  • Build with Scribe v2 Realtime STT directly and tune VAD parameters (commit strategy, vad_threshold, vad_silence_threshold_secs, etc.). Scribe v2 Realtime is available and documented with VAD controls; it’s also used within Agents. (elevenlabs.io)

Optional (Enterprise): real-time conversation monitoring lets supervisors issue commands such as end call or barge‑in during a problematic call. (elevenlabs.io)

If you’d like, I can point you to the exact screens for Interruptions/Turn eagerness/Timeouts in your dashboard and a minimal End‑Call prompt template. (elevenlabs.io)

Sources:
Voice isolator | ElevenLabs Documentation
Conversation flow | ElevenLabs Documentation
Conversation flow | ElevenLabs Documentation
End call | ElevenLabs Documentation
Voicemail detection | ElevenLabs Documentation
Register Twilio calls | ElevenLabs Documentation
Realtime | ElevenLabs Documentation
December 15, 2025 | ElevenLabs Documentation
Conversation flow | ElevenLabs Documentation

wild bane
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There is no disable interruption for conversation, just for the first message.

round fernBOT
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AI-generated Answer for parintele_damaskin

You can disable interruptions for the entire conversation. In the Agent dashboard, go to Advanced → Client Events and deselect the Interruption event; when interruptions are disabled there, the agent will not allow barge‑in while speaking. See “Conversation flow → Interruptions” and “Client events” docs. (elevenlabs.io)

There is also a separate control just for the opening line: disable_first_message_interruptions. This was added on Sept 15, 2025 and prevents interruptions only during the agent’s first message; you’ll also see this flag in the simulate conversation API. (elevenlabs.io)

If background noise is still causing unwanted turn‑taking, consider making the agent less eager to take turns (Turn eagerness = Patient) in the same Conversation flow settings. (elevenlabs.io)

Sources:
Conversation flow | ElevenLabs Documentation
September 15, 2025 | ElevenLabs Documentation
Conversation flow | ElevenLabs Documentation

wild bane
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If I turn to Patient from Eager, the latency increases!
This is totally the wrong way how 11labs turns the agent into a strict behavior.

round fernBOT
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AI-generated Answer for parintele_damaskin

Short answer: yes—switching Turn Eagerness to Patient will increase perceived latency. Patient explicitly “waits longer before taking its turn,” while Eager responds at the earliest opportunity. That behavior is by design. (elevenlabs.io)

How to make the agent “strict” without adding latency:

  • Keep Turn Eagerness at Eager (or Normal) and disable interruptions. In the dashboard: Agent > Advanced > Client Events, do not enable the interruption event. This prevents callers/background noise from barging in while the agent is speaking. (elevenlabs.io)
  • If you only need the opening line to be non‑interruptible, use the dedicated “disable first message interruptions” setting (disable_first_message_interruptions). This was added in the Sept 15, 2025 release and is also exposed in the simulate-conversation API. (elevenlabs.io)
  • Adjust Turn Timeout (Agent > Advanced > Turn Timeout) to control how long the agent waits in silence before prompting, independent of eagerness/interrupt settings. (elevenlabs.io)

About noise suppression:

  • ElevenLabs Voice Isolator is a file-based cleanup tool (upload/record → process → download). It is not a real-time suppression feature for Agents. (elevenlabs.io)
  • For real-time recognition on calls (e.g., via Twilio), Agents use streaming STT. Scribe v2 Realtime emphasizes low latency (~150 ms), robustness on low‑quality audio, and supports VAD/commit strategies—useful for noisy lines—but it is not a toggle for active noise cancellation. (elevenlabs.io)
  • Scribe v2 Realtime is available within the Agents platform. (elevenlabs.io)

Net: “Strict” behavior with low latency = Eager (or Normal) + interruptions disabled (+ tune Turn Timeout). Patient mode trades speed for giving the user more time, which is why you observed higher latency. (elevenlabs.io)

Sources:
Conversation flow | ElevenLabs Documentation
Conversation flow | ElevenLabs Documentation
September 15, 2025 | ElevenLabs Documentation
Conversation flow | ElevenLabs Documentation
Voice isolator | ElevenLabs Documentation
Scribe v2 Realtime Speech to Text - 150ms Latency API
ElevenLabs - ElevenLabs Agents now support WhatsApp
Conversation flow | ElevenLabs Documentation

wild bane
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Clearly you are hallucinating , since there is no option in the Agent UI dashboard to "interrupt background noises"! .

round fernBOT
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AI-generated Answer for parintele_damaskin

You’re right—there is no “interrupt background noises” control in the Agents dashboard.

What does exist:

  • Interruptions (barge‑in): You can enable/disable whether user audio can interrupt the agent while it’s speaking. In the UI this is under Advanced > Client Events; removing the Interruption client event disables barge‑in entirely. This is not noise suppression. (elevenlabs.io)
  • Turn eagerness (Eager/Normal/Patient): Controls how quickly the agent takes its turn; Patient will increase latency by design. (elevenlabs.io)

What does not exist for phone calls today:

  • A built‑in, real‑time noise suppression toggle for Agents on telephony (e.g., Twilio). ElevenLabs’ Voice Isolator is a separate tool/API that processes uploaded/recorded files (up to 500MB/1h); it is not an in‑call, real‑time suppressor. (elevenlabs.io)

Related note:

  • If you build a browser (WebRTC) experience, our WebRTC stack includes echo cancellation and background noise removal on the client. This is separate from PSTN/Twilio telephony. (elevenlabs.io)

If your Twilio calls are being cut off by background sounds, the only Agent‑side mitigation available in the UI is to disable interruptions (so noise can’t barge in) and tune conversation flow (timeouts/turn‑eagerness) as needed. (elevenlabs.io)

Sources:
Conversation flow | ElevenLabs Documentation
Conversation flow | ElevenLabs Documentation
Voice isolator & background sound remover (product guide) | ElevenLabs Documentation
ElevenLabs Conversational AI now supports WebRTC
Conversation flow | ElevenLabs Documentation

wild bane
#

Client events

Select the events that should be sent to the client.

Events
Add event
user_transcript
agent_response
agent_tool_response
audio
interruption
agent_tool_request ...
Ahhhhh!!!! Now I understand!
11labs removed the toggle button and placed this "interruption" in Client Events!
So if I remove that from the chosen Events, it means the agent won't be interrupted when user speaks at all... right?

round fernBOT
#
AI-generated Answer for parintele_damaskin

Yes. In Agents, “interruption” is now controlled via Client Events. If you remove the “interruption” client event (Advanced tab → Client Events), user speech will not cut off the agent; the agent will finish its current turn before listening again. To allow barge‑in, keep “interruption” selected. (elevenlabs.io)

For reference, telephony integrations document “interruption” as the event used to handle caller barge‑ins during agent speech. (elevenlabs.io)

Sources:
Conversation flow | ElevenLabs Documentation
Genesys | ElevenLabs Documentation

wild bane
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Ok, so it's a combination between interruption and patient/eager/normal.
Weird is that some calls may have background noises and each of the patient etc... is not good enough.
So is impossible to set eager,patient in the same call!