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Lesson 4 of 6 — Choose and tune your agent’s voice for trust, clarity, and natural conversation.
Voice choice strongly affects trust, clarity, and perceived competence. A good voice setup makes the agent feel calm, intentional, and predictable — especially in call scenarios where users cannot re-read responses. This step should be completed after agent behaviour is stable, but before serious call testing.

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Where this lives

Navigate to Voice → Agent voice set-up-project You will see two configurable sections:

Agent

The primary speaking voice

Disclaimer

Used only for legal or informational disclosures (if enabled)

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What you are configuring

Each voice entry has three layers:
1

Voice selection

Who the agent sounds like
2

Weighting

If multiple voices are used, how they’re distributed
3

Voice tuning

Stability, clarity, and speed adjustments

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Configure your agent voice

1

Select the agent voice

In the Agent section:
  • Click Change
  • Browse voices by:
    • Language / locale
    • Gender
    • Voice type
  • Preview each voice using the play button
Choose a voice that:
  • Matches your audience’s expectations
  • Sounds neutral and professional
  • Remains pleasant over repeated listening
Once selected, click Select.
2

(Optional) Add multiple agent voices

You can add more than one agent voice and split usage between them.
  • Click + Voice
  • Select an additional voice
  • Assign a percentage weight (for example, 70% / 30%)
  • You want subtle variation across calls
  • You are testing two voices in parallel
  • Different voices for different scenarios
3

Configure voice settings

Next to each voice, click the Settings (gear) icon to open advanced tuning.
Leave as default unless advised otherwise.
Click Done to save settings.
4

Configure disclaimer voice (if enabled)

If your agent uses a disclaimer:
  • Expand the Disclaimer section
  • Select a voice (can be the same or different from the agent)
Best practices:
  • Use a clear, neutral voice
  • Avoid expressive or casual tones
  • Keep speed slightly slower than the main agent
Example disclaimer text: “This call may be recorded for quality and training purposes.”
5

Publish changes

Once satisfied:
  • Click Publish
  • Changes will apply to the selected environment

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Verify your voice settings

After publishing, make at least one test call and listen to:
  • Voice sounds clear and welcoming
  • Pacing feels natural
  • No awkward pauses
  • Voice remains consistent across turns
  • Responses flow naturally
  • No sudden changes in tone or speed
  • Voice maintains professionalism
  • Instructions are clear
  • Pacing allows for comprehension
Success criteria:
  • Voice sounds consistent throughout the call
  • No awkward pacing or unnatural pauses
  • Audio matches expectations across all conversation turns
If something feels off, adjust stability first, then speed.