{
  "schema_version": 1,
  "experiment": "9-1",
  "run_id": "exp9-1-20260729T153334474Z",
  "generated_at_utc": "2026-07-29T15:33:34.475Z",
  "credentials_persisted": false,
  "provenance": {
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      "release": "25.3.0",
      "architecture": "arm64",
      "cpu_model": "Apple M2 Max",
      "logical_cpu_count": 12,
      "total_memory_bytes": 103079215104
    },
    "runtime": {
      "node": "v25.6.0",
      "onnxruntime_node": "^1.22.0-rev",
      "axios": "^1.7.5",
      "ffprobe": "ffprobe version 8.0.1 Copyright (c) 2007-2025 the FFmpeg developers"
    },
    "timing_clock": "process.hrtime.bigint monotonic clock"
  },
  "source_media": {
    "path": "microphone_input.wav",
    "capture_method": "browser_microphone_over_websocket",
    "original_repository_path": "backend/recordings/recording_2025-02-06T14-51-38-205Z.wav",
    "sha256": "e69d77415ffa39e1a2e00b99e6dbedce675faa9b4c2b703a256585861c6d2085",
    "size_bytes": 161836,
    "original_sha256": "e69d77415ffa39e1a2e00b99e6dbedce675faa9b4c2b703a256585861c6d2085",
    "duration_seconds": 5.056,
    "sample_rate_hz": 16000,
    "channels": 1,
    "bits_per_sample": 16,
    "provenance_note": "Existing real microphone capture saved by live-audio/backend/server.js; replayed through the production Silero class for reproducible validation."
  },
  "stages": {
    "vad": {
      "execution": "real",
      "mock": false,
      "probe_only": false,
      "fallback_used": false,
      "implementation": "Silero VAD ONNX",
      "model": "models/silero_vad.onnx",
      "model_sha256": "2623a2953f6ff3d2c1e61740c6cdb7168133479b267dfef114a4a3cc5bdd788f",
      "threshold": 0.5,
      "max_silence_ms": 500,
      "endpoint_detected": true,
      "detected_endpoint_count": 2,
      "selected_endpoint": "longest detected speech segment",
      "forced_endpoint": false,
      "observed_trailing_silence_ms": 509,
      "speech_duration_ms": 1534,
      "latency_seconds": 5.393088166,
      "segment_path": "vad_segment.wav",
      "segment_sha256": "61d43291d32fdbce3a32a1809c7368e12a5bf98f799f28a31e08848b8e7dda06",
      "segment_bytes": 46124
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    "asr": {
      "execution": "real",
      "mock": false,
      "probe_only": false,
      "fallback_used": false,
      "provider": "local-openai-whisper",
      "model": "whisper-tiny",
      "inference_completed": true,
      "api_request_completed": false,
      "external_request": false,
      "latency_seconds": 2.710318042,
      "transcript": "是男朋友叫这样的",
      "language": "zh",
      "runtime": {
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        "torch": "2.7.0",
        "openai_whisper": "20231106"
      },
      "model_path": "/Users/boj/.cache/whisper/tiny.pt",
      "model_sha256": "65147644a518d12f04e32d6f3b26facc3f8dd46e5390956a9424a650c0ce22b9",
      "model_load_seconds": 0.34045145800337195,
      "model_inference_seconds": 1.3047717502340674,
      "provider_reported_cost_usd": 0,
      "cost_note": "Local open-source Whisper inference; no external ASR charge."
    },
    "llm": {
      "execution": "real",
      "mock": false,
      "probe_only": false,
      "fallback_used": false,
      "provider": "ark",
      "model": "doubao-seed-1-6-flash-250615",
      "streamed": true,
      "api_request_completed": true,
      "external_request": true,
      "first_token_seconds": 0.749332709,
      "latency_seconds": 0.791579917,
      "response": "那是男朋友叫这样的呀",
      "provider_request_id": "021785339222980840fd37cfe82fdd108ca4a9d2a652575aa05c0",
      "finish_reason": "stop",
      "usage": {
        "completion_tokens": 30,
        "prompt_tokens": 83,
        "total_tokens": 113,
        "prompt_tokens_details": {
          "cached_tokens": 0
        },
        "completion_tokens_details": {
          "reasoning_tokens": 23
        }
      },
      "provider_reported_cost_usd": null,
      "cost_note": "The streamed response did not expose a monetary charge; consult the provider billing ledger."
    },
    "tts": {
      "execution": "real",
      "mock": false,
      "probe_only": false,
      "fallback_used": false,
      "provider": "fish",
      "model": "s1",
      "voice": "authorized zero-shot reference",
      "api_request_completed": true,
      "external_request": true,
      "first_audio_byte_seconds": 2.8189757498912513,
      "latency_seconds": 3.2793434159830213,
      "output_path": "assistant_response.mp3",
      "output_sha256": "2ac0b766ac8afaafb6c6bd09e66a134eb6cc46188aa62edc403ddde32fdf92c8",
      "output_bytes": 30928,
      "output_duration_seconds": 1.933,
      "output_format": "mp3",
      "reference_id_sha256": "bb2ec197d6276bfad81bbdbcec4473040861e6bc20caf53cf4d1f8184a7416be",
      "reference_id_source": "../../controllable-tts/reference_audio/manifest.json",
      "billed_input_characters": 10,
      "provider_reported_cost_usd": null,
      "cost_note": "The Fish Audio SDK response did not expose a monetary charge; consult the provider billing ledger."
    }
  },
  "experiment_complete": true,
  "latency": {
    "post_endpoint_to_first_audio_byte_seconds": 6.278626500891251,
    "complete_serial_pipeline_seconds": 12.17432954098302,
    "measurement_clock": "process.hrtime.bigint monotonic clock"
  },
  "cost": {
    "paid_external_requests": 2,
    "provider_reported_total_usd": 0,
    "complete": false,
    "note": "A zero total is not a zero-cost claim when complete=false; some providers omit per-request charges."
  },
  "acceptance": {
    "gates": {
      "schema_and_scope": true,
      "real_websocket_microphone_media": true,
      "real_silero_vad_endpoint": true,
      "real_asr": true,
      "real_streaming_llm": true,
      "real_tts_media": true,
      "measured_stage_latencies": true,
      "provenance_complete": true,
      "no_mock_probe_or_fallback": true
    },
    "passed": true,
    "statement": "Passing proves one saved real microphone turn completed Silero VAD -> real ASR -> real LLM -> real TTS. It does not benchmark concurrency or production load."
  }
}