Notification Sound MeasurementsMeasured levels and spectral characteristics of current OS and app event sounds
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Zoom Workplace · Unclassified

pencils_down

05d82db2e8a5

Level measurements

Integrated-32.6 LUFS
Maximum momentary-30.2 LUFS
True peak-17.2 dBTP
RMS-31.9 dBFS
Active RMS-31.8 dBFS
Duration5.313 s
Maximum short-term-31.5 LUFS
Loudness range13.8 LU
Sample peak-17.5 dBFS
Sample crest factor14.4 dB
True-peak crest factor14.7 dB
Active duration5.200 s

Level over time

RMS · 13.312 ms · 400 points

Active threshold -60.0 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 1.33 2.66 3.98 5.31 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 centroid361 Hz
Peak frequency109 Hz
200 Hz–8 kHz energy48.5 %
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 25.0 Hz: -77.0 dBFS 31.5 Hz: -75.8 dBFS 40.0 Hz: -74.7 dBFS 50.0 Hz: -67.8 dBFS 63.0 Hz: -44.7 dBFS 80.0 Hz: -44.7 dBFS 100.0 Hz: -39.6 dBFS 125.0 Hz: -48.7 dBFS 160.0 Hz: -51.8 dBFS 200.0 Hz: -40.5 dBFS 250.0 Hz: -42.1 dBFS 315.0 Hz: -40.4 dBFS 400.0 Hz: -47.0 dBFS 500.0 Hz: -47.5 dBFS 630.0 Hz: -46.8 dBFS 800.0 Hz: -50.3 dBFS 1000.0 Hz: -47.7 dBFS 1250.0 Hz: -46.4 dBFS 1600.0 Hz: -50.0 dBFS 2000.0 Hz: -51.6 dBFS 2500.0 Hz: -56.5 dBFS 3150.0 Hz: -56.5 dBFS 4000.0 Hz: -55.0 dBFS 5000.0 Hz: -59.7 dBFS 6300.0 Hz: -63.0 dBFS 8000.0 Hz: -75.4 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

Zoom Workplace v7.1.5 (84650)

Unclassified

Contents/Frameworks/zAppUI.bundle/Contents/Resources/pencils_down.mp3
Acquisition
official_distribution
Source observed
2026-08-09T06:29:47Z
Distribution package
URL ↗
Package SHA-256
49cf70af674176f3708b9d3b519f585424c442ccf744fd9659327967971c8279
Official source ↗

Technical metadata

SHA-25605d82db2e8a5d79150514ea9f0f483323a8014aea437e04c8e373e3a71b4951d
Analyzed2026-08-09T06:29:47Z
CodecMP3 (MPEG audio layer 3)
Sample formatfltp
Sample rate16000 Hz
Channels1 · mono
Analysis profilenotification-sound-db-bs1770-v2
FFmpegffmpeg version 8.1.2 Copyright (c) 2000-2026 the FFmpeg developers

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