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

QuickNavArrowKeyOff

c44dcac64bb1

Level measurements

Integrated-15.6 LUFS
Maximum momentary-15.6 LUFS
True peak-4.0 dBTP
RMS-19.2 dBFS
Active RMS-15.7 dBFS
Duration0.312 s
Maximum short-term—
Loudness range—
Sample peak-4.0 dBFS
Sample crest factor15.2 dB
True-peak crest factor15.2 dB
Active duration0.140 s

Level over time

RMS · 10.0 ms · 32 points

Active threshold -51.6 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 0.078 0.156 0.234 0.312 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 centroid1502 Hz
Peak frequency1324 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: -91.0 dBFS 31.5 Hz: -89.7 dBFS 40.0 Hz: -88.5 dBFS 50.0 Hz: -87.3 dBFS 63.0 Hz: -86.1 dBFS 80.0 Hz: -82.6 dBFS 100.0 Hz: -82.3 dBFS 125.0 Hz: -79.1 dBFS 160.0 Hz: -70.1 dBFS 200.0 Hz: -63.7 dBFS 250.0 Hz: -60.2 dBFS 315.0 Hz: -52.8 dBFS 400.0 Hz: -47.2 dBFS 500.0 Hz: -44.2 dBFS 630.0 Hz: -45.3 dBFS 800.0 Hz: -49.5 dBFS 1000.0 Hz: -45.2 dBFS 1250.0 Hz: -21.7 dBFS 1600.0 Hz: -45.3 dBFS 2000.0 Hz: -26.3 dBFS 2500.0 Hz: -62.9 dBFS 3150.0 Hz: -61.2 dBFS 4000.0 Hz: -64.3 dBFS 5000.0 Hz: -65.6 dBFS 6300.0 Hz: -69.8 dBFS 8000.0 Hz: -78.1 dBFS 10000.0 Hz: -73.0 dBFS 12500.0 Hz: -69.9 dBFS 16000.0 Hz: -72.4 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 VoiceOver event sounds v26.6.1

UI feedback

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

Technical metadata

SHA-256c44dcac64bb1f7fbe87e498dd24de35f076be52b5825917332da03b2a9e0658c
Analyzed2026-08-09T06:27:25Z
CodecPCM 32-bit floating point little-endian
Sample formatflt · 32 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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