Voxtral Mini 3B - Streaming ASR

WebSocket Protocol

Endpoint: wss://voxtral.dudoxx.com/asr?language=auto

Audio Format: PCM Int16, 16kHz, Mono

Send: Binary ArrayBuffer (Int16Array.buffer)

Receive: JSON messages with enhanced metrics

{
  "type": "partial|final",
  "text": "current chunk text",
  "full_transcript": "complete transcript",
  "audio": {
    "energy_rms": 1234.5,
    "snr_db": 25.3,
    "zero_crossing_rate": 0.12,
    "duration_sec": 1.5
  },
  "processing": {
    "latency_ms": 180.5,
    "rtf": 0.12,
    "chunk_index": 5
  },
  "language": {
    "requested": "auto",
    "detected": "en",
    "confidence": 0.85
  },
  "stats": {
    "word_count": 12,
    "wpm": 145.2,
    "total_audio_sec": 5.2
  }
}