The Text to Speech (TTS) node converts text into spoken audio and plays it to the caller in real time.Documentation Index
Fetch the complete documentation index at: https://docs.oration.ai/llms.txt
Use this file to discover all available pages before exploring further.
Behavior
- Sends text to the configured TTS provider
- Streams the synthesized audio to the caller
- Supports variable interpolation in the text (e.g.,
{{customer_name}}) - Emits
TTS.ENDon completion orTTS.ERRORon failure
Configuration
| Parameter | Type | Default | Range / Options | Description |
|---|---|---|---|---|
text | string | "" | — | The text to speak. Supports {{variable}} interpolation. |
provider | enum | "ElevenlabsTTSConfig" | Provider-specific | TTS provider to use |
model | enum | "eleven_flash_v2_5" | Model-specific | TTS model identifier |
voice | string | "default" | — | Voice identifier |
voiceId | string | "" | — | Specific voice ID from the provider |
language | string | "en" | — | Language code (e.g., en, en-US, es) |
speed | number | 1.0 | 0.5–2.0 | Speech rate multiplier |
pitch | number | 1.0 | 0.5–2.0 | Speech pitch multiplier |
emphasis | enum | "moderate" | none, moderate, strong, reduced | Emphasis level for speech delivery |
Output handles
| Handle | Description |
|---|---|
| End | Speech playback completed — flow continues to the next node |
| Error | TTS generation or playback failed |
Use cases
Dynamic greeting
Dynamic greeting
Set
text to "Hello {{customer_name}}, thank you for calling." after looking up the caller in a Database node.Slow-paced instructions
Slow-paced instructions
Set
speed: 0.8 for complex instructions that callers need time to process.Multi-language support
Multi-language support
Use a Switch on language preference, then route to separate TTS nodes with matching
language and voiceId configurations.