Audio

In Admin > Settings > Audio, configure voice input/output engines.

TTS (Text-to-Speech)

Configure the engine that converts AI responses to speech.

Setting	Description	Default
Engine	TTS service selection	`Web API`
Model	Per-engine TTS model	-
Voice	Voice type	-
Response splitting	TTS response split unit (sentence/paragraph)	`Punctuation`

Uses the browser’s built-in Web Speech API. Ready to use without separate configuration.

Setting	Description
API Base URL	OpenAI API Endpoint
API Key	API authentication key
Model	e.g., `tts-1`, `tts-1-hd`
Voice	`alloy`, `echo`, `fable`, `onyx`, `nova`, `shimmer`

Setting	Description
API Key	Azure Speech Service key
Region	Azure region (e.g., `koreacentral`)
Output Format	Audio output format

Setting	Description
Language Filter (Optional)	Voice language filter (e.g., `ko-KR`)
Service Account Key	Global key or Custom JSON key

Setting	Description
Location	Region (default: `us-central1`)
Service Account Key	Global key or Custom JSON key
TTS Voice	Gemini TTS voice selection
Model	Gemini TTS model (default: `gemini-2.5-flash-preview-tts`)

Configure the engine that converts user voice input to text.

Setting	Description	Default
Engine	STT service selection	`Whisper (local)`
Model	Per-engine STT model	-

Uses the browser’s built-in Web Speech API.

Setting	Description
API Key	Azure Speech Service key
Region	Azure region
Locales	Recognition languages (comma-separated, e.g., `ko-KR,en-US`)

Setting	Description
API Key	Deepgram API key

Setting	Description
Project ID	Google Cloud project ID
Location	Region (default: `global`)
Language Codes	Recognition languages (default: `auto`)
Service Account Key	Global key or Custom JSON key

Configure avatars displayed during AI responses.

Setting	Description
Engine	Avatar service selection
API Key	Avatar service authentication key
Region	Service region
Character	Avatar character selection
Style	Avatar style
Greeting	Avatar greeting