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

a2_teams_basic_notification_r4_vibe

a564b005114a

Level measurements

Integrated-33.4 LUFS
Maximum momentary-31.2 LUFS
True peak-19.0 dBTP
RMS-37.2 dBFS
Active RMS-34.6 dBFS
Duration0.959 s
Maximum short-term—
Loudness range—
Sample peak-19.0 dBFS
Sample crest factor18.2 dB
True-peak crest factor18.2 dB
Active duration0.520 s

Level over time

RMS · 10.0 ms · 96 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 0.000 0.240 0.479 0.719 0.959 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 frequency388 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: -89.8 dBFS 31.5 Hz: -87.4 dBFS 40.0 Hz: -88.0 dBFS 50.0 Hz: -87.7 dBFS 63.0 Hz: -84.8 dBFS 80.0 Hz: -82.2 dBFS 100.0 Hz: -78.1 dBFS 125.0 Hz: -71.3 dBFS 160.0 Hz: -68.1 dBFS 200.0 Hz: -58.7 dBFS 250.0 Hz: -44.2 dBFS 315.0 Hz: -56.0 dBFS 400.0 Hz: -40.2 dBFS 500.0 Hz: -62.6 dBFS 630.0 Hz: -43.3 dBFS 800.0 Hz: -77.7 dBFS 1000.0 Hz: -86.1 dBFS 1250.0 Hz: -89.8 dBFS 1600.0 Hz: -96.4 dBFS 2000.0 Hz: -99.0 dBFS 2500.0 Hz: -102.1 dBFS 3150.0 Hz: -104.5 dBFS 4000.0 Hz: -115.4 dBFS 5000.0 Hz: -118.8 dBFS 6300.0 Hz: -123.4 dBFS 8000.0 Hz: -116.9 dBFS 10000.0 Hz: -104.2 dBFS 12500.0 Hz: -102.7 dBFS 16000.0 Hz: -101.7 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/a2_teams_basic_notification_r4_vibe.wav
Acquisition
official_distribution
Source observed
2026-08-09T06:29:46Z
Distribution package
URL ↗
Package SHA-256
dd5fab62b2003993a49ac86ecdc653500e970e29efd8c8b100f17d0adb30987e
Official source ↗

Technical metadata

SHA-256a564b005114ab8d1b635686382ce58b58a79446bd0b9c437b3db2666f63a5e37
Analyzed2026-08-09T06:29:45Z
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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