> For AI agents: the complete documentation index is available at https://docs.flashnerd.com/llms.txt, the full documentation bundle is available at https://docs.flashnerd.com/llms-full.txt.

# TTS (Text-to-Speech)

A **TTS** field reads text using the device's speech voices. Use it for listening prompts, pronunciation practice, or hearing a sentence while checking an answer.

## Read another field aloud

1. Add a TTS field to your deck template and choose its side.
2. Open its gear button to access **Field settings**.
3. Set **Source Type** to **Field Reference**.
4. Under **Source Field**, select a Text, Chinese, Japanese, or Cloze field from the same template.
5. Set **Language** to the language of the spoken text.
6. Choose whether to enable **Auto Play**, then return and save the template or card.

For a Japanese vocabulary card, a TTS field on Back can reference the Japanese term on Front. This avoids maintaining two copies of the same word.

Only **Text, Chinese, Japanese, and Cloze** are supported reference source types. Other field types appear as invalid choices. A missing or deleted source must be selected again before the reference can speak useful content.

## Enter separate spoken text

Choose **Manual Input** for Source Type when the speech should differ from another displayed field. Enter the wording in the card's TTS editor, choose its Language, and save the card.

Changing the app's interface language does not automatically set the TTS language. Match the TTS field to its content—for example, English (US), English (UK), or Japanese.

## Playback and voice availability

Use the playback control to listen. **Auto Play** controls automatic playback when the field is displayed in a supported review view; choose the side carefully so speech does not reveal the answer early.

Available voices depend on the device's speech engine and installed voice data. If the requested voice is unavailable, the app may use another voice in the same language or fall back to English. Check the field's language and install the appropriate system voice when pronunciation sounds wrong.

Use [Audio Recording](https://docs.flashnerd.com/reference/fields/audio.md) when you need a specific recorded voice rather than synthesized speech. See [Troubleshooting](https://docs.flashnerd.com/help/troubleshooting.md) for sound and permission problems.