macOS system sounds · System alert
Hero
93c4c6dab387
Level measurements
Integrated-19.5 LUFS
Maximum momentary-18.0 LUFS
True peak-5.4 dBTP
RMS-24.4 dBFS
Active RMS-22.6 dBFS
Duration1.057 s
| Maximum short-term | — |
|---|---|
| Loudness range | — |
| Sample peak | -5.4 dBFS |
| Sample crest factor | 19.0 dB |
| True-peak crest factor | 19.0 dB |
| Active duration | 0.690 s |
Level over time
RMS · 10.0 ms · 106 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 centroid333 Hz
Peak frequency246 Hz
200 Hz–8 kHz energy97.7 %
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 system sounds v26.6.1
System alert
Hero.aiff
- Acquisition
local_installation- Source observed
- 2026-08-09T06:27:14Z
Technical metadata
| SHA-256 | 93c4c6dab387914ee903e3dbb6932b821928ac26b2254abf8f5642d7cb886b2c |
|---|---|
| Analyzed | 2026-08-09T06:27:14Z |
| Codec | PCM signed 24-bit big-endian |
| Sample format | s32 · 24 bit |
| Sample rate | 48000 Hz |
| Channels | 2 |
| Analysis profile | notification-sound-db-bs1770-v2 |
| FFmpeg | ffmpeg version 8.1.2 Copyright (c) 2000-2026 the FFmpeg developers |