{
  "$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": 0.34,
    "sample_rate_hz": 48000
  },
  "file": {
    "bits_per_sample": null,
    "byte_size": 9649,
    "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": 0.26,
      "end_seconds": 0.3,
      "leading_silence_seconds": 0.04,
      "rms_dbfs": -21.977,
      "start_seconds": 0.04,
      "threshold_dbfs": -56.448,
      "trailing_silence_seconds": 0.04
    },
    "channels": [
      {
        "index": 0,
        "rms_dbfs": -22.058,
        "sample_peak_dbfs": -7.977
      },
      {
        "index": 1,
        "rms_dbfs": -24.59,
        "sample_peak_dbfs": -10.409
      }
    ],
    "rms_dbfs": -23.142,
    "rms_envelope": {
      "frame_duration_seconds": 0.01,
      "maximum_point_count": 400,
      "method": "non-overlapping channel-combined RMS frames",
      "points": [
        {
          "rms_dbfs": -82.042,
          "time_seconds": 0.005
        },
        {
          "rms_dbfs": -81.973,
          "time_seconds": 0.015
        },
        {
          "rms_dbfs": -80.802,
          "time_seconds": 0.025
        },
        {
          "rms_dbfs": -61.389,
          "time_seconds": 0.035
        },
        {
          "rms_dbfs": -54.75,
          "time_seconds": 0.045
        },
        {
          "rms_dbfs": -42.663,
          "time_seconds": 0.055
        },
        {
          "rms_dbfs": -35.499,
          "time_seconds": 0.065
        },
        {
          "rms_dbfs": -30.841,
          "time_seconds": 0.075
        },
        {
          "rms_dbfs": -27.378,
          "time_seconds": 0.085
        },
        {
          "rms_dbfs": -29.783,
          "time_seconds": 0.095
        },
        {
          "rms_dbfs": -24.914,
          "time_seconds": 0.105
        },
        {
          "rms_dbfs": -20.958,
          "time_seconds": 0.115
        },
        {
          "rms_dbfs": -19.631,
          "time_seconds": 0.125
        },
        {
          "rms_dbfs": -19.283,
          "time_seconds": 0.135
        },
        {
          "rms_dbfs": -19.116,
          "time_seconds": 0.145
        },
        {
          "rms_dbfs": -19.31,
          "time_seconds": 0.155
        },
        {
          "rms_dbfs": -16.764,
          "time_seconds": 0.165
        },
        {
          "rms_dbfs": -16.448,
          "time_seconds": 0.175
        },
        {
          "rms_dbfs": -18.056,
          "time_seconds": 0.185
        },
        {
          "rms_dbfs": -23.227,
          "time_seconds": 0.195
        },
        {
          "rms_dbfs": -22.477,
          "time_seconds": 0.205
        },
        {
          "rms_dbfs": -22.285,
          "time_seconds": 0.215
        },
        {
          "rms_dbfs": -20.627,
          "time_seconds": 0.225
        },
        {
          "rms_dbfs": -22.517,
          "time_seconds": 0.235
        },
        {
          "rms_dbfs": -23.716,
          "time_seconds": 0.245
        },
        {
          "rms_dbfs": -26.235,
          "time_seconds": 0.255
        },
        {
          "rms_dbfs": -22.55,
          "time_seconds": 0.265
        },
        {
          "rms_dbfs": -30.895,
          "time_seconds": 0.275
        },
        {
          "rms_dbfs": -47.628,
          "time_seconds": 0.285
        },
        {
          "rms_dbfs": -54.883,
          "time_seconds": 0.295
        },
        {
          "rms_dbfs": -59.635,
          "time_seconds": 0.305
        },
        {
          "rms_dbfs": -62.499,
          "time_seconds": 0.315
        },
        {
          "rms_dbfs": -67.404,
          "time_seconds": 0.325
        },
        {
          "rms_dbfs": -68.931,
          "time_seconds": 0.335
        }
      ]
    },
    "sample_crest_factor_db": 15.165,
    "sample_peak_dbfs": -7.977,
    "true_peak_crest_factor_db": 15.142
  },
  "loudness": {
    "integrated_lufs": -19.7,
    "loudness_range_lu": null,
    "maximum_momentary_lufs": -18.4,
    "maximum_short_term_lufs": null,
    "momentary_window_seconds": 0.4,
    "notes": [
      "silent_tail_added_for_meter_settling",
      "source_shorter_than_momentary_window",
      "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": -8.0
  },
  "schema_version": "1.1.0",
  "sha256": "526644950a6245c14dd8ecc83f4319897d5695c5c966fd0d3a1da42a539a138a",
  "spectrum": {
    "broad_band_energy_dbfs": {
      "high_5000_10000_hz": -41.611,
      "low_80_200_hz": -56.372,
      "low_mid_200_500_hz": -37.984,
      "mid_500_2000_hz": -29.527,
      "presence_2000_5000_hz": -22.865,
      "sub_20_80_hz": -74.029
    },
    "method": "Welch PSD, Hann window, 4096-sample maximum segment",
    "peak_frequency_hz": 2191.406,
    "spectral_centroid_hz": 2209.943,
    "speech_band_200_8000_hz_energy_percent": 99.813,
    "third_octave_band_energy_dbfs": [
      {
        "center_hz": 25.0,
        "energy_dbfs": -77.697
      },
      {
        "center_hz": 31.5,
        "energy_dbfs": -81.409
      },
      {
        "center_hz": 40.0,
        "energy_dbfs": -81.54
      },
      {
        "center_hz": 50.0,
        "energy_dbfs": -83.076
      },
      {
        "center_hz": 63.0,
        "energy_dbfs": -84.047
      },
      {
        "center_hz": 80.0,
        "energy_dbfs": -83.297
      },
      {
        "center_hz": 100.0,
        "energy_dbfs": -77.64
      },
      {
        "center_hz": 125.0,
        "energy_dbfs": -72.288
      },
      {
        "center_hz": 160.0,
        "energy_dbfs": -61.834
      },
      {
        "center_hz": 200.0,
        "energy_dbfs": -57.101
      },
      {
        "center_hz": 250.0,
        "energy_dbfs": -51.305
      },
      {
        "center_hz": 315.0,
        "energy_dbfs": -39.688
      },
      {
        "center_hz": 400.0,
        "energy_dbfs": -48.274
      },
      {
        "center_hz": 500.0,
        "energy_dbfs": -48.024
      },
      {
        "center_hz": 630.0,
        "energy_dbfs": -41.704
      },
      {
        "center_hz": 800.0,
        "energy_dbfs": -43.724
      },
      {
        "center_hz": 1000.0,
        "energy_dbfs": -38.755
      },
      {
        "center_hz": 1250.0,
        "energy_dbfs": -38.378
      },
      {
        "center_hz": 1600.0,
        "energy_dbfs": -34.833
      },
      {
        "center_hz": 2000.0,
        "energy_dbfs": -26.912
      },
      {
        "center_hz": 2500.0,
        "energy_dbfs": -24.782
      },
      {
        "center_hz": 3150.0,
        "energy_dbfs": -42.469
      },
      {
        "center_hz": 4000.0,
        "energy_dbfs": -43.478
      },
      {
        "center_hz": 5000.0,
        "energy_dbfs": -46.8
      },
      {
        "center_hz": 6300.0,
        "energy_dbfs": -44.279
      },
      {
        "center_hz": 8000.0,
        "energy_dbfs": -48.447
      },
      {
        "center_hz": 10000.0,
        "energy_dbfs": -52.562
      },
      {
        "center_hz": 12500.0,
        "energy_dbfs": -61.456
      },
      {
        "center_hz": 16000.0,
        "energy_dbfs": -71.219
      }
    ]
  },
  "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"
  }
}