Notification Sound MeasurementsMeasured levels and spectral characteristics of current OS and app event sounds
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Microsoft Teams · Message

primary-notification-level40

ed202c0396fa

Level measurements

Integrated-19.5 LUFS
Maximum momentary-17.1 LUFS
True peak-11.1 dBTP
RMS-23.5 dBFS
Active RMS-22.6 dBFS
Duration1.166 s
Maximum short-term—
Loudness range—
Sample peak-11.1 dBFS
Sample crest factor12.4 dB
True-peak crest factor12.4 dB
Active duration0.940 s

Level over time

RMS · 10.0 ms · 117 points

Active threshold -55.6 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 0.00 0.29 0.58 0.87 1.17 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 centroid406 Hz
Peak frequency323 Hz
200 Hz–8 kHz energy99.5 %
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 16k 25.0 Hz: -102.3 dBFS 31.5 Hz: -100.9 dBFS 40.0 Hz: -98.8 dBFS 50.0 Hz: -92.5 dBFS 63.0 Hz: -75.3 dBFS 80.0 Hz: -68.0 dBFS 100.0 Hz: -66.5 dBFS 125.0 Hz: -58.1 dBFS 160.0 Hz: -55.1 dBFS 200.0 Hz: -46.6 dBFS 250.0 Hz: -29.1 dBFS 315.0 Hz: -27.9 dBFS 400.0 Hz: -46.8 dBFS 500.0 Hz: -30.7 dBFS 630.0 Hz: -30.9 dBFS 800.0 Hz: -50.6 dBFS 1000.0 Hz: -57.2 dBFS 1250.0 Hz: -60.9 dBFS 1600.0 Hz: -64.5 dBFS 2000.0 Hz: -62.6 dBFS 2500.0 Hz: -71.3 dBFS 3150.0 Hz: -71.6 dBFS 4000.0 Hz: -71.0 dBFS 5000.0 Hz: -72.4 dBFS 6300.0 Hz: -63.3 dBFS 8000.0 Hz: -63.4 dBFS 10000.0 Hz: -68.6 dBFS 12500.0 Hz: -64.9 dBFS 16000.0 Hz: -70.0 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

Microsoft Teams v26198.202.4929.7171

Message

Contents/Resources/primary-notification-level40.wav
Acquisition
official_distribution
Source observed
2026-08-09T06:29:46Z
Distribution package
URL ↗
Package SHA-256
dd5fab62b2003993a49ac86ecdc653500e970e29efd8c8b100f17d0adb30987e
Official source ↗

Technical metadata

SHA-256ed202c0396fa7a0451bf3d8419e852d4ade2ac91c23995549294023a243afd49
Analyzed2026-08-09T06:29:46Z
CodecAAC (Advanced Audio Coding)
Sample formatfltp
Sample rate44100 Hz
Channels2 · stereo
Analysis profilenotification-sound-db-bs1770-v2
FFmpegffmpeg version 8.1.2 Copyright (c) 2000-2026 the FFmpeg developers

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