{
  "$schema": "../schemas/asset.schema.json",
  "analysis_profile": "notification-sound-db-bs1770-v2",
  "analyzed_at": "2026-08-09T06:27:31Z",
  "audio": {
    "channel_count": 2,
    "channel_layout": "stereo",
    "duration_seconds": 0.671927,
    "sample_rate_hz": 44100
  },
  "file": {
    "bits_per_sample": null,
    "byte_size": 17107,
    "codec_long_name": "AAC (Advanced Audio Coding)",
    "codec_name": "aac",
    "container_format": "mov,mp4,m4a,3gp,3g2,mj2",
    "extension": ".m4a",
    "sample_format": "fltp"
  },
  "levels": {
    "active_segment": {
      "duration_seconds": 0.53,
      "end_seconds": 0.53,
      "leading_silence_seconds": 0.0,
      "rms_dbfs": -19.124,
      "start_seconds": 0.0,
      "threshold_dbfs": -50.551,
      "trailing_silence_seconds": 0.141927
    },
    "channels": [
      {
        "index": 0,
        "rms_dbfs": -20.821,
        "sample_peak_dbfs": -5.99
      },
      {
        "index": 1,
        "rms_dbfs": -19.577,
        "sample_peak_dbfs": -5.95
      }
    ],
    "rms_dbfs": -20.154,
    "rms_envelope": {
      "frame_duration_seconds": 0.01,
      "maximum_point_count": 400,
      "method": "non-overlapping channel-combined RMS frames",
      "points": [
        {
          "rms_dbfs": -22.76,
          "time_seconds": 0.005
        },
        {
          "rms_dbfs": -20.163,
          "time_seconds": 0.015
        },
        {
          "rms_dbfs": -19.24,
          "time_seconds": 0.025
        },
        {
          "rms_dbfs": -18.76,
          "time_seconds": 0.035
        },
        {
          "rms_dbfs": -18.573,
          "time_seconds": 0.045
        },
        {
          "rms_dbfs": -19.783,
          "time_seconds": 0.055
        },
        {
          "rms_dbfs": -21.25,
          "time_seconds": 0.065
        },
        {
          "rms_dbfs": -23.13,
          "time_seconds": 0.075
        },
        {
          "rms_dbfs": -24.71,
          "time_seconds": 0.085
        },
        {
          "rms_dbfs": -25.967,
          "time_seconds": 0.095
        },
        {
          "rms_dbfs": -27.203,
          "time_seconds": 0.105
        },
        {
          "rms_dbfs": -19.536,
          "time_seconds": 0.115
        },
        {
          "rms_dbfs": -13.7,
          "time_seconds": 0.125
        },
        {
          "rms_dbfs": -11.173,
          "time_seconds": 0.135
        },
        {
          "rms_dbfs": -10.551,
          "time_seconds": 0.145
        },
        {
          "rms_dbfs": -11.468,
          "time_seconds": 0.155
        },
        {
          "rms_dbfs": -11.982,
          "time_seconds": 0.165
        },
        {
          "rms_dbfs": -13.283,
          "time_seconds": 0.175
        },
        {
          "rms_dbfs": -14.355,
          "time_seconds": 0.185
        },
        {
          "rms_dbfs": -15.669,
          "time_seconds": 0.195
        },
        {
          "rms_dbfs": -17.273,
          "time_seconds": 0.205
        },
        {
          "rms_dbfs": -19.401,
          "time_seconds": 0.215
        },
        {
          "rms_dbfs": -20.325,
          "time_seconds": 0.225
        },
        {
          "rms_dbfs": -21.963,
          "time_seconds": 0.235
        },
        {
          "rms_dbfs": -20.229,
          "time_seconds": 0.245
        },
        {
          "rms_dbfs": -20.002,
          "time_seconds": 0.255
        },
        {
          "rms_dbfs": -19.968,
          "time_seconds": 0.265
        },
        {
          "rms_dbfs": -21.343,
          "time_seconds": 0.275
        },
        {
          "rms_dbfs": -23.033,
          "time_seconds": 0.285
        },
        {
          "rms_dbfs": -25.09,
          "time_seconds": 0.295
        },
        {
          "rms_dbfs": -27.633,
          "time_seconds": 0.305
        },
        {
          "rms_dbfs": -29.392,
          "time_seconds": 0.315
        },
        {
          "rms_dbfs": -31.98,
          "time_seconds": 0.325
        },
        {
          "rms_dbfs": -33.549,
          "time_seconds": 0.335
        },
        {
          "rms_dbfs": -32.751,
          "time_seconds": 0.345
        },
        {
          "rms_dbfs": -31.546,
          "time_seconds": 0.355
        },
        {
          "rms_dbfs": -30.488,
          "time_seconds": 0.365
        },
        {
          "rms_dbfs": -31.011,
          "time_seconds": 0.375
        },
        {
          "rms_dbfs": -31.543,
          "time_seconds": 0.385
        },
        {
          "rms_dbfs": -32.552,
          "time_seconds": 0.395
        },
        {
          "rms_dbfs": -34.28,
          "time_seconds": 0.405
        },
        {
          "rms_dbfs": -36.11,
          "time_seconds": 0.415
        },
        {
          "rms_dbfs": -38.447,
          "time_seconds": 0.425
        },
        {
          "rms_dbfs": -41.123,
          "time_seconds": 0.435
        },
        {
          "rms_dbfs": -43.085,
          "time_seconds": 0.445
        },
        {
          "rms_dbfs": -47.791,
          "time_seconds": 0.455
        },
        {
          "rms_dbfs": -46.303,
          "time_seconds": 0.465
        },
        {
          "rms_dbfs": -42.795,
          "time_seconds": 0.475
        },
        {
          "rms_dbfs": -42.46,
          "time_seconds": 0.485
        },
        {
          "rms_dbfs": -43.048,
          "time_seconds": 0.495
        },
        {
          "rms_dbfs": -45.1,
          "time_seconds": 0.505
        },
        {
          "rms_dbfs": -46.903,
          "time_seconds": 0.515
        },
        {
          "rms_dbfs": -49.546,
          "time_seconds": 0.525
        },
        {
          "rms_dbfs": -51.541,
          "time_seconds": 0.535
        },
        {
          "rms_dbfs": -54.472,
          "time_seconds": 0.545
        },
        {
          "rms_dbfs": -57.765,
          "time_seconds": 0.555
        },
        {
          "rms_dbfs": -61.217,
          "time_seconds": 0.565
        },
        {
          "rms_dbfs": -60.128,
          "time_seconds": 0.575
        },
        {
          "rms_dbfs": -60.824,
          "time_seconds": 0.585
        },
        {
          "rms_dbfs": -62.962,
          "time_seconds": 0.595
        },
        {
          "rms_dbfs": -66.184,
          "time_seconds": 0.605
        },
        {
          "rms_dbfs": -69.876,
          "time_seconds": 0.615
        },
        {
          "rms_dbfs": -75.503,
          "time_seconds": 0.625
        },
        {
          "rms_dbfs": -82.292,
          "time_seconds": 0.635
        },
        {
          "rms_dbfs": -95.198,
          "time_seconds": 0.645
        },
        {
          "rms_dbfs": -118.046,
          "time_seconds": 0.655
        },
        {
          "rms_dbfs": -124.797,
          "time_seconds": 0.665
        },
        {
          "rms_dbfs": -144.368,
          "time_seconds": 0.670964
        }
      ]
    },
    "sample_crest_factor_db": 14.204,
    "sample_peak_dbfs": -5.95,
    "true_peak_crest_factor_db": 14.254
  },
  "loudness": {
    "integrated_lufs": -17.3,
    "loudness_range_lu": null,
    "maximum_momentary_lufs": -15.6,
    "maximum_short_term_lufs": null,
    "momentary_window_seconds": 0.4,
    "notes": [
      "silent_tail_added_for_meter_settling",
      "source_shorter_than_short_term_window"
    ],
    "short_term_window_seconds": 3.0,
    "standard": "ITU-R BS.1770-5 / EBU Mode",
    "tail_padding_seconds": 3.1,
    "true_peak_dbtp": -5.9
  },
  "schema_version": "1.1.0",
  "sha256": "caa0d3c47df19afb46587c62b1e4b786db054541e8e2ba1d20420708fbd7be02",
  "spectrum": {
    "broad_band_energy_dbfs": {
      "high_5000_10000_hz": -81.7,
      "low_80_200_hz": -47.094,
      "low_mid_200_500_hz": -29.167,
      "mid_500_2000_hz": -21.963,
      "presence_2000_5000_hz": -75.522,
      "sub_20_80_hz": -56.805
    },
    "method": "Welch PSD, Hann window, 4096-sample maximum segment",
    "peak_frequency_hz": 527.563,
    "spectral_centroid_hz": 482.279,
    "speech_band_200_8000_hz_energy_percent": 99.693,
    "third_octave_band_energy_dbfs": [
      {
        "center_hz": 25.0,
        "energy_dbfs": -88.767
      },
      {
        "center_hz": 31.5,
        "energy_dbfs": -86.338
      },
      {
        "center_hz": 40.0,
        "energy_dbfs": -81.724
      },
      {
        "center_hz": 50.0,
        "energy_dbfs": -65.185
      },
      {
        "center_hz": 63.0,
        "energy_dbfs": -57.966
      },
      {
        "center_hz": 80.0,
        "energy_dbfs": -59.165
      },
      {
        "center_hz": 100.0,
        "energy_dbfs": -57.226
      },
      {
        "center_hz": 125.0,
        "energy_dbfs": -50.532
      },
      {
        "center_hz": 160.0,
        "energy_dbfs": -61.689
      },
      {
        "center_hz": 200.0,
        "energy_dbfs": -55.327
      },
      {
        "center_hz": 250.0,
        "energy_dbfs": -29.358
      },
      {
        "center_hz": 315.0,
        "energy_dbfs": -53.381
      },
      {
        "center_hz": 400.0,
        "energy_dbfs": -56.754
      },
      {
        "center_hz": 500.0,
        "energy_dbfs": -21.872
      },
      {
        "center_hz": 630.0,
        "energy_dbfs": -46.074
      },
      {
        "center_hz": 800.0,
        "energy_dbfs": -61.317
      },
      {
        "center_hz": 1000.0,
        "energy_dbfs": -60.734
      },
      {
        "center_hz": 1250.0,
        "energy_dbfs": -71.971
      },
      {
        "center_hz": 1600.0,
        "energy_dbfs": -72.979
      },
      {
        "center_hz": 2000.0,
        "energy_dbfs": -80.351
      },
      {
        "center_hz": 2500.0,
        "energy_dbfs": -86.345
      },
      {
        "center_hz": 3150.0,
        "energy_dbfs": -77.995
      },
      {
        "center_hz": 4000.0,
        "energy_dbfs": -82.318
      },
      {
        "center_hz": 5000.0,
        "energy_dbfs": -90.934
      },
      {
        "center_hz": 6300.0,
        "energy_dbfs": -82.507
      },
      {
        "center_hz": 8000.0,
        "energy_dbfs": -91.738
      },
      {
        "center_hz": 10000.0,
        "energy_dbfs": -92.292
      },
      {
        "center_hz": 12500.0,
        "energy_dbfs": -90.512
      },
      {
        "center_hz": 16000.0,
        "energy_dbfs": -92.452
      }
    ]
  },
  "toolchain": {
    "ffmpeg": "ffmpeg version 8.1.2 Copyright (c) 2000-2026 the FFmpeg developers",
    "ffprobe": "ffprobe version 8.1.2 Copyright (c) 2007-2026 the FFmpeg developers",
    "notification_sound_db": "0.1.0"
  }
}