{
"type": "start",
"language": "en",
"sample_rate": 16000
}{
"type": "stop"
}{
"type": "keepalive"
}{
"type": "transcription",
"is_final": true,
"alternatives": [
{
"confidence": 0.95,
"transcript": "Hello world"
}
],
"language": "en"
}{
"type": "error",
"error": "config_error",
"message": "Invalid language code"
}Cognigy STT
Stream live audio to SLNG over the Cognigy Voice Gateway WebSocket protocol and receive real-time STT transcripts from any supported model.
{
"type": "start",
"language": "en",
"sample_rate": 16000
}{
"type": "stop"
}{
"type": "keepalive"
}{
"type": "transcription",
"is_final": true,
"alternatives": [
{
"confidence": 0.95,
"transcript": "Hello world"
}
],
"language": "en"
}{
"type": "error",
"error": "config_error",
"message": "Invalid language code"
}API key issued by SLNG. Pass as Authorization: Bearer <token> in the WebSocket upgrade request headers.
GET
Target region override. Auto-selected if not provided.
Target world part override. Auto-selected if not provided.
Target region override as a query parameter. Auto-selected if not provided. Equivalent to the X-Region-Override header; the header takes precedence when both are set.
ap-southeast-2, eu-north-1, us-east-1Target world part override as a query parameter. Auto-selected if not provided. Equivalent to the X-World-Part-Override header; the header takes precedence when both are set.
ap, eu, naInitialize Cognigy STT session with language and sample rate.
End the Cognigy STT session and finalize transcription.
Keep the WebSocket connection alive during silence.
Transcription result with alternatives and metadata.
Error occurred during Cognigy STT recognition.
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