macOS CoreAudio event sounds · Completion
acknowledgment_sent
e29fbb3bdc6a
Level measurements
Integrated-35.4 LUFS
Maximum momentary-35.4 LUFS
True peak-20.2 dBTP
RMS-36.4 dBFS
Active RMS-30.3 dBFS
Duration0.286 s
| Maximum short-term | — |
|---|---|
| Loudness range | — |
| Sample peak | -20.2 dBFS |
| Sample crest factor | 16.1 dB |
| True-peak crest factor | 16.2 dB |
| Active duration | 0.070 s |
Level over time
RMS · 10.0 ms · 29 points
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 centroid587 Hz
Peak frequency562 Hz
200 Hz–8 kHz energy100.0 %
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
Completion
system/acknowledgment_sent.caf
- Acquisition
local_installation- Source observed
- 2026-08-09T06:27:20Z
Technical metadata
| SHA-256 | e29fbb3bdc6a8359f70ee8cfb13132eac00b910d00603bad938172744dbdccfe |
|---|---|
| Analyzed | 2026-08-09T06:27:17Z |
| Codec | PCM signed 16-bit little-endian |
| Sample format | s16 · 16 bit |
| Sample rate | 96000 Hz |
| Channels | 2 |
| Analysis profile | notification-sound-db-bs1770-v2 |
| FFmpeg | ffmpeg version 8.1.2 Copyright (c) 2000-2026 the FFmpeg developers |