> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://poly-ai.ferndocs.com/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://poly-ai.ferndocs.com/_mcp/server.

# Choosing a good voice

> Guidelines for selecting the right voice for your agent.

Use this guide when setting up a new agent or changing an existing voice. A well-chosen voice builds caller trust from the first second; a poor choice causes hang-ups and complaints regardless of how well the agent handles the conversation.

## Using the Voice library

The **[Voice library](/agent-studio/voice/voice-design/voice-library)** provides tools to find the right voice:

1. Go to **Voice > Settings**.
2. Click **Change** to open the Voice library.
3. Use filters for **language**, **region**, and **gender**.
4. Preview voices with **custom text** before selecting.
5. Save frequently-used voices to **Favorites** for quick access.

## Accent

Choose an accent that matches your audience.

Use the Voice library's **region filter** to find accents that match your audience:

* US English for North American customers
* UK English for British customers
* Regional variants for specific markets

## Personality and texture

Match the voice to your business.

| Industry/Audience     | Voice Characteristics        |
| --------------------- | ---------------------------- |
| Professional services | Confidence and reliability   |
| Younger audience      | Energy and enthusiasm        |
| Older individuals     | Maturity and trustworthiness |
| Healthcare            | Calm and reassuring          |
| Hospitality           | Warm and welcoming           |

Use the **style tags** shown on voice cards in the Voice library to identify voices with the right characteristics.

## Voice parameter settings

After selecting a voice, fine-tune Stability, Clarity, and Style to match your use case. See [Agent Voice – voice settings](/agent-studio/voice/settings#voice-settings) for full parameter details.

> **Tip**
>
> For the most reliable experience, set **Stability** to 0.7 or above.

## Voice selection workflow

1. **Browse voices** in the [Voice library](/agent-studio/voice/voice-design/voice-library) using the **Explore** tab.
2. **Filter** by language, region, and gender to narrow options.
3. **Preview** voices using the play button and custom text input.
4. **Check style tags** on voice cards for characteristics like "warm", "professional", or "energetic".
5. **Save to Favorites** any voices you want to compare later.
6. **Select** the voice that best fits your needs.
7. **Configure settings** for stability and clarity.
8. **Publish** changes to apply to your live agent.

## Best practices

* Test voices with various sentence types your agent commonly uses
* Consider how the voice sounds when delivering both good news and handling complaints
* Match voice characteristics to your brand identity
* Use the Favorites feature to shortlist options before final selection
* Review voice performance in [Conversation Review](/agent-studio/conversations/review) after deployment

## Related pages

#### [Voice library](/agent-studio/voice/voice-design/voice-library)

Browse and preview available voices

#### [Agent Voice](/agent-studio/voice/settings)

Configure voice settings and fine-tuning

#### [Voice configuration](/agent-studio/voice/advanced-settings)

Channel-specific settings and call handling

#### [Multi-voice](/agent-studio/voice/voice-design/multi-voice)

Use multiple voices to simulate a team