macOS system sounds · System alert
Glass
b337d8e01066
Level measurements
Integrated-25.8 LUFS
Maximum momentary-22.7 LUFS
True peak-13.6 dBTP
RMS-31.5 dBFS
Active RMS-27.9 dBFS
Duration1.650 s
| Maximum short-term | — |
|---|---|
| Loudness range | — |
| Sample peak | -14.1 dBFS |
| Sample crest factor | 17.5 dB |
| True-peak crest factor | 17.9 dB |
| Active duration | 0.720 s |
Level over time
RMS · 10.0 ms · 166 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 centroid863 Hz
Peak frequency387 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
Glass.aiff
- Acquisition
local_installation- Source observed
- 2026-08-09T06:27:14Z
Technical metadata
| SHA-256 | b337d8e01066c30de2f296763609b7e488bb3c6ea817aa875ee999d708433cf9 |
|---|---|
| Analyzed | 2026-08-09T06:27:13Z |
| 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 |