Notification Sound MeasurementsMeasured levels and spectral characteristics of current OS and app event sounds
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macOS system sounds · System alert

Ping

c401532c8f53

Level measurements

Integrated-28.8 LUFS
Maximum momentary-26.2 LUFS
True peak-10.5 dBTP
RMS-34.7 dBFS
Active RMS-27.8 dBFS
Duration1.502 s
Maximum short-term—
Loudness range—
Sample peak-10.6 dBFS
Sample crest factor24.1 dB
True-peak crest factor24.2 dB
Active duration0.310 s

Level over time

RMS · 10.0 ms · 151 points

Active threshold -59.0 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 0.00 0.38 0.75 1.13 1.50 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 centroid642 Hz
Peak frequency527 Hz
200 Hz–8 kHz energy100.0 %
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: -105.7 dBFS 31.5 Hz: -102.2 dBFS 40.0 Hz: -100.0 dBFS 50.0 Hz: -97.8 dBFS 63.0 Hz: -95.3 dBFS 80.0 Hz: -92.3 dBFS 100.0 Hz: -93.1 dBFS 125.0 Hz: -90.9 dBFS 160.0 Hz: -82.6 dBFS 200.0 Hz: -75.1 dBFS 250.0 Hz: -70.3 dBFS 315.0 Hz: -61.5 dBFS 400.0 Hz: -54.5 dBFS 500.0 Hz: -37.3 dBFS 630.0 Hz: -50.2 dBFS 800.0 Hz: -58.4 dBFS 1000.0 Hz: -68.7 dBFS 1250.0 Hz: -65.9 dBFS 1600.0 Hz: -47.9 dBFS 2000.0 Hz: -75.5 dBFS 2500.0 Hz: -54.5 dBFS 3150.0 Hz: -77.1 dBFS 4000.0 Hz: -62.9 dBFS 5000.0 Hz: -77.1 dBFS 6300.0 Hz: -93.9 dBFS 8000.0 Hz: -100.9 dBFS 10000.0 Hz: -106.5 dBFS 12500.0 Hz: -110.7 dBFS 16000.0 Hz: -115.2 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 system sounds v26.6.1

System alert

Ping.aiff
Acquisition
local_installation
Source observed
2026-08-09T06:27:14Z
Official source ↗

Technical metadata

SHA-256c401532c8f53a31203ecce724dcbb6b0167158137536e8fcc1930dfcb75cccfa
Analyzed2026-08-09T06:27:14Z
CodecPCM signed 24-bit big-endian
Sample formats32 · 24 bit
Sample rate48000 Hz
Channels2
Analysis profilenotification-sound-db-bs1770-v2
FFmpegffmpeg version 8.1.2 Copyright (c) 2000-2026 the FFmpeg developers

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