macOS system sounds · System alert
Blow
65a0c069511d
Level measurements
Integrated-22.2 LUFS
Maximum momentary-18.8 LUFS
True peak-10.0 dBTP
RMS-26.5 dBFS
Active RMS-24.4 dBFS
Duration1.402 s
| Maximum short-term | — |
|---|---|
| Loudness range | — |
| Sample peak | -10.0 dBFS |
| Sample crest factor | 16.5 dB |
| True-peak crest factor | 16.5 dB |
| Active duration | 0.850 s |
Level over time
RMS · 10.0 ms · 141 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 centroid409 Hz
Peak frequency387 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 system sounds v26.6.1
System alert
Blow.aiff
- Acquisition
local_installation- Source observed
- 2026-08-09T06:27:14Z
Technical metadata
| SHA-256 | 65a0c069511d5a01cf791635e0b3a9dc3f335caf67f5d3579cc0a6c6232f9818 |
|---|---|
| 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 |