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

b2_teams_urgent_notification_r4_prioritize

7d79e87fa2f9

Level measurements

Integrated-18.7 LUFS
Maximum momentary-16.0 LUFS
True peak-8.1 dBTP
RMS-22.8 dBFS
Active RMS-21.5 dBFS
Duration1.549 s
Maximum short-term—
Loudness range—
Sample peak-8.1 dBFS
Sample crest factor14.7 dB
True-peak crest factor14.7 dB
Active duration1.150 s

Level over time

RMS · 10.0 ms · 155 points

Active threshold -54.5 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 0.39 0.77 1.16 1.55 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 centroid950 Hz
Peak frequency937 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: -112.0 dBFS 31.5 Hz: -110.7 dBFS 40.0 Hz: -108.2 dBFS 50.0 Hz: -103.9 dBFS 63.0 Hz: -99.1 dBFS 80.0 Hz: -98.3 dBFS 100.0 Hz: -95.7 dBFS 125.0 Hz: -90.0 dBFS 160.0 Hz: -86.8 dBFS 200.0 Hz: -80.2 dBFS 250.0 Hz: -67.7 dBFS 315.0 Hz: -47.8 dBFS 400.0 Hz: -52.3 dBFS 500.0 Hz: -36.0 dBFS 630.0 Hz: -29.7 dBFS 800.0 Hz: -42.6 dBFS 1000.0 Hz: -26.1 dBFS 1250.0 Hz: -28.4 dBFS 1600.0 Hz: -76.2 dBFS 2000.0 Hz: -38.8 dBFS 2500.0 Hz: -95.1 dBFS 3150.0 Hz: -103.4 dBFS 4000.0 Hz: -106.1 dBFS 5000.0 Hz: -106.6 dBFS 6300.0 Hz: -106.3 dBFS 8000.0 Hz: -105.4 dBFS 10000.0 Hz: -102.4 dBFS 12500.0 Hz: -101.1 dBFS 16000.0 Hz: -100.1 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/b2_teams_urgent_notification_r4_prioritize.wav
Acquisition
official_distribution
Source observed
2026-08-09T06:29:46Z
Distribution package
URL ↗
Package SHA-256
dd5fab62b2003993a49ac86ecdc653500e970e29efd8c8b100f17d0adb30987e
Official source ↗

Technical metadata

SHA-2567d79e87fa2f9d64e63195b1c71e185a10740ab6f7ae513714df67bce26b015c7
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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