> ## Documentation Index
> Fetch the complete documentation index at: https://docs.heysonara.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Configuring Voice

> Choose a voice provider and select the perfect voice for your agent.

## Voice providers

Sonara supports multiple text-to-speech (TTS) providers, each offering different voice styles, languages, and quality levels. Choose the provider and voice that best fits your agent's personality and use case.

### Available providers

| Provider       | Highlights                                                              |
| -------------- | ----------------------------------------------------------------------- |
| **Cartesia**   | High-quality, natural-sounding voices. Great for conversational agents. |
| **ElevenLabs** | Premium voice cloning and ultra-realistic speech.                       |
| **OpenAI**     | Solid general-purpose voices from OpenAI's TTS models.                  |
| **Google**     | Wide language support with region-specific accents.                     |
| **Sarvam**     | Specialized for Indian languages and accents.                           |

## Selecting a voice

<Steps>
  <Step title="Open voice settings">
    Navigate to your agent's configuration and click the **Voice** tab.
  </Step>

  <Step title="Choose a provider">
    Select a TTS provider from the dropdown. Each provider offers different voices.
  </Step>

  <Step title="Browse and preview voices">
    Browse the available voices for your selected provider. Each voice shows:

    * Name
    * Gender
    * Accent/language
    * Preview button to hear a sample

    Click the **play** button to preview a voice before selecting it.
  </Step>

  <Step title="Adjust speed">
    Use the speed slider to adjust how fast the agent speaks. The default is **1.0x**. Lower values slow the speech down; higher values speed it up.
  </Step>
</Steps>

## Language support

Sonara supports **60+ languages** with automatic language detection for multi-language agents.

### Single language mode

Select one language for your agent. The agent will only speak and understand this language.

### Multi-language mode

Enable multi-language support to let your agent automatically detect and respond in the caller's language. You can configure:

* **Supported languages**  - Which languages the agent can use
* **Fallback language**  - The default language if detection is uncertain

<Warning>
  Not all voice-language combinations are supported. If your selected voice doesn't support a language, Sonara will automatically suggest a compatible alternative.
</Warning>

## Speech-to-text (STT)

The STT provider determines how your agent transcribes what callers say. Configure this in the voice settings:

* **Provider**  - Select an STT provider (Deepgram is the default)
* **Model**  - Choose the transcription model (e.g., `nova-3` for highest accuracy)

<Tip>
  Deepgram's `nova-3` model offers the best balance of speed and accuracy for real-time voice conversations.
</Tip>