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macOS CoreAudio event sounds · UI feedback

media_handoff

8bd142608704

Level measurements

Integrated-24.2 LUFS
Maximum momentary-23.2 LUFS
True peak-5.0 dBTP
RMS-30.0 dBFS
Active RMS-27.0 dBFS
Duration0.979 s
Maximum short-term
Loudness range
Sample peak-5.0 dBFS
Sample crest factor25.0 dB
True-peak crest factor25.0 dB
Active duration0.490 s

Level over time

RMS · 10.0 ms · 98 points

Active threshold -54.8 dBFS
Short-window RMS level over time Each point is the channel-combined RMS of a non-overlapping frame. Values below −80 dBFS are pinned to the chart floor for display; the canonical JSON retains measured values, and digital silence remains null. 0 -20 -40 -60 -80 0.000 0.245 0.490 0.734 0.979 RMS (dBFS) Time (seconds)

Each point is the channel-combined RMS of a non-overlapping frame. Values below −80 dBFS are pinned to the chart floor for display; the canonical JSON retains measured values, and digital silence remains null.

Frequency characteristics

Spectral centroid975 Hz
Peak frequency1043 Hz
200 Hz–8 kHz energy98.9 %
Third-octave band energy Frequency is shown on the horizontal axis and band energy on the vertical axis. Values below −120 dBFS are pinned to the chart floor for display. 0 -20 -40 -60 -80 -100 -120 31.5 63 125 250 500 1k 2k 4k 8k 16k 25.0 Hz: -67.0 dBFS 31.5 Hz: -67.8 dBFS 40.0 Hz: -68.4 dBFS 50.0 Hz: -71.8 dBFS 63.0 Hz: -69.7 dBFS 80.0 Hz: -64.5 dBFS 100.0 Hz: -62.7 dBFS 125.0 Hz: -59.5 dBFS 160.0 Hz: -57.7 dBFS 200.0 Hz: -57.3 dBFS 250.0 Hz: -54.4 dBFS 315.0 Hz: -51.7 dBFS 400.0 Hz: -52.4 dBFS 500.0 Hz: -51.3 dBFS 630.0 Hz: -46.2 dBFS 800.0 Hz: -40.4 dBFS 1000.0 Hz: -32.3 dBFS 1250.0 Hz: -46.8 dBFS 1600.0 Hz: -50.0 dBFS 2000.0 Hz: -52.5 dBFS 2500.0 Hz: -60.2 dBFS 3150.0 Hz: -68.3 dBFS 4000.0 Hz: -70.5 dBFS 5000.0 Hz: -72.6 dBFS 6300.0 Hz: -76.2 dBFS 8000.0 Hz: -78.6 dBFS 10000.0 Hz: -83.6 dBFS 12500.0 Hz: -83.2 dBFS 16000.0 Hz: -85.1 dBFS Band energy (dBFS) Frequency (Hz)

Frequency is shown on the horizontal axis and band energy on the vertical axis. Values below −120 dBFS are pinned to the chart floor for display.

Current source occurrences

macOS CoreAudio event sounds v26.6.1

UI feedback

system/media_handoff.caf
Acquisition
local_installation
Source observed
2026-08-09T06:27:20Z
Official source ↗

Technical metadata

SHA-2568bd142608704c9486d1ea753c272d68181301bc27fb08e77eec9c10115462502
Analyzed2026-08-09T06:27:18Z
CodecPCM signed 24-bit little-endian
Sample formats32 · 24 bit
Sample rate48000 Hz
Channels2 · stereo
Analysis profilenotification-sound-db-bs1770-v2
FFmpegffmpeg version 8.1.2 Copyright (c) 2000-2026 the FFmpeg developers

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