Notification Sound MeasurementsMeasured levels and spectral characteristics of current OS and app event sounds
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macOS accessibility media event sounds · UI feedback

pluck2

8a7d0289907d

Level measurements

Integrated-25.5 LUFS
Maximum momentary-25.5 LUFS
True peak-8.0 dBTP
RMS-25.9 dBFS
Active RMS-25.2 dBFS
Duration0.263 s
Maximum short-term—
Loudness range—
Sample peak-8.0 dBFS
Sample crest factor18.0 dB
True-peak crest factor17.9 dB
Active duration0.220 s

Level over time

RMS · 10.0 ms · 27 points

Active threshold -55.7 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 0.000 0.066 0.131 0.197 0.263 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 centroid340 Hz
Peak frequency388 Hz
200 Hz–8 kHz energy92.6 %
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: -63.7 dBFS 31.5 Hz: -63.5 dBFS 40.0 Hz: -66.8 dBFS 50.0 Hz: -65.5 dBFS 63.0 Hz: -54.0 dBFS 80.0 Hz: -57.8 dBFS 100.0 Hz: -63.7 dBFS 125.0 Hz: -55.6 dBFS 160.0 Hz: -56.4 dBFS 200.0 Hz: -48.7 dBFS 250.0 Hz: -46.3 dBFS 315.0 Hz: -41.6 dBFS 400.0 Hz: -37.2 dBFS 500.0 Hz: -57.7 dBFS 630.0 Hz: -65.7 dBFS 800.0 Hz: -65.7 dBFS 1000.0 Hz: -78.2 dBFS 1250.0 Hz: -95.9 dBFS 1600.0 Hz: -96.3 dBFS 2000.0 Hz: -102.7 dBFS 2500.0 Hz: -105.1 dBFS 3150.0 Hz: -105.8 dBFS 4000.0 Hz: -106.8 dBFS 5000.0 Hz: -106.2 dBFS 6300.0 Hz: -106.0 dBFS 8000.0 Hz: -105.7 dBFS 10000.0 Hz: -105.1 dBFS 12500.0 Hz: -104.7 dBFS 16000.0 Hz: -103.8 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 accessibility media event sounds v26.6.1

UI feedback

pluck2.aiff
Acquisition
local_installation
Source observed
2026-08-09T06:27:27Z
Official source ↗

Technical metadata

SHA-2568a7d0289907dc27ee3dd1d7f0833dc999f61d531422d9b12dc63753bbed2b95b
Analyzed2026-08-09T06:27:27Z
CodecPCM signed 16-bit big-endian
Sample formats16 · 16 bit
Sample rate44100 Hz
Channels2
Analysis profilenotification-sound-db-bs1770-v2
FFmpegffmpeg version 8.1.2 Copyright (c) 2000-2026 the FFmpeg developers

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