Tutorial: Edit voice settings

Lesson 4 of 6 – Your agent has a personality and knows things – now give it a voice. You’ll pick how it sounds and adjust clarity and consistency.

Lesson

Level 1 · Beginner · 10 min

Complete this after behavior is stable but before call testing. The voice is what turns your chat-only agent into a real voice assistant.

Where this lives

Navigate to Voice > Settings

set-up-project

You will see two configurable sections:

Agent

The primary speaking voice

Disclaimer

Used only for legal or informational disclosures (if enabled)

What you are configuring

Each voice entry has three layers:

Voice selection

Who the agent sounds like

Weighting

If multiple voices are used, how they’re distributed

Voice tuning

Stability, clarity, and speed adjustments

Configure your Agent Voice

Select the Agent Voice

In the Agent section:

Click Change to open the Voice Library
Browse voices using the Explore or Favorites tabs
Filter by Language, Region, and Gender
Preview each voice using the play button or enter custom text

Choose a voice that:

Matches your audience’s expectations
Sounds neutral and professional
Remains pleasant over repeated listening

Once selected, click Select.

(Optional) Add multiple agent voices

You can add more than one agent voice and split usage between them.

Click New voice
Select an additional voice
Assign a percentage weight (for example, 70% / 30%)

When to use multiple voices

You want subtle variation across calls
You are testing two voices in parallel
Different voices for different scenarios

Configure voice settings

Next to each voice, click the Settings (gear) icon to open advanced tuning.

Stability (%)

Clarity and similarity (%)

Controls how consistent the voice sounds over time. Higher values keep tone and delivery more uniform across responses.

Higher = more predictable, less expressive

Recommended: 0.7 or above for reliable performance.

Click Done to save settings.

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.”

Publish changes

Once satisfied:

Click Publish
Changes will apply to the selected environment

Check your understanding

Your agent plays a recorded legal disclosure before every call. Which section of the Agent Voice page handles this?

Agent – it controls all audio played during the call
Disclaimer – it’s designed for legal or informational pre-call recordings
Behavior – legal requirements should be enforced there
Environment settings – disclaimers apply per environment

Answer: Disclaimer – it’s designed for legal or informational pre-call recordings

The Disclaimer section is designed for legal or informational recordings separate from the agent’s main voice. Configure it only if your agent actually uses a disclaimer – otherwise leave it unconfigured.

Verify your voice settings

After publishing, make at least one test call and listen to:

Greeting

Voice sounds clear and welcoming
Pacing feels natural
No awkward pauses

Mid-call responses

Voice remains consistent across turns
Responses flow naturally
No sudden changes in tone or speed

Longer responses

Voice maintains professionalism throughout
Instructions are clear and easy to follow
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 the voice quality is not as expected, adjust stability first, then speed.

Check your understanding

If the voice sounds off after publishing, what should you adjust first?

Speed, then pitch
Stability first, then speed
Switch to a different voice model
Pitch first, then stability

Answer: Stability first, then speed

Stability controls how consistent and predictable the voice sounds – it’s the most impactful dial for basic quality issues. Adjust it first, then fine-tune speed if needed.

Try it yourself

Challenge: Choose settings for a hotel concierge

You are configuring voice for a luxury hotel concierge agent. Decide and explain:

Should stability be higher or lower – and why?
What clarity range would you use for natural guest conversations?
Would you use a single voice or multiple voices for this agent?

Hint

For a luxury hotel, consistency and tone matter a lot. Think about what “professional” sounds like in audio – and what settings support that.

Example solution

Stability: High (0.8 or above). Luxury guests expect a consistent, predictable tone – not expressive variation.
Clarity: 80–90. This range keeps the voice natural and conversational without being brittle to unexpected phrasing.
Single voice. Multiple voices introduce inconsistency, which conflicts with a luxury brand expectation. Add a second voice only if you’re specifically A/B testing.