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

a8_teams_basic_notification_r4_ping

12b8351e8108

Level measurements

Integrated-20.0 LUFS
Maximum momentary-17.9 LUFS
True peak-8.4 dBTP
RMS-24.1 dBFS
Active RMS-21.2 dBFS
Duration0.909 s
Maximum short-term—
Loudness range—
Sample peak-8.4 dBFS
Sample crest factor15.7 dB
True-peak crest factor15.7 dB
Active duration0.470 s

Level over time

RMS · 10.0 ms · 91 points

Active threshold -53.9 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 0.227 0.454 0.682 0.909 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 centroid644 Hz
Peak frequency463 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: -70.0 dBFS 31.5 Hz: -72.9 dBFS 40.0 Hz: -76.2 dBFS 50.0 Hz: -77.6 dBFS 63.0 Hz: -78.8 dBFS 80.0 Hz: -85.2 dBFS 100.0 Hz: -88.6 dBFS 125.0 Hz: -85.2 dBFS 160.0 Hz: -81.5 dBFS 200.0 Hz: -79.5 dBFS 250.0 Hz: -79.2 dBFS 315.0 Hz: -69.1 dBFS 400.0 Hz: -51.8 dBFS 500.0 Hz: -27.2 dBFS 630.0 Hz: -28.1 dBFS 800.0 Hz: -47.0 dBFS 1000.0 Hz: -38.8 dBFS 1250.0 Hz: -33.3 dBFS 1600.0 Hz: -56.5 dBFS 2000.0 Hz: -46.2 dBFS 2500.0 Hz: -47.1 dBFS 3150.0 Hz: -83.8 dBFS 4000.0 Hz: -65.4 dBFS 5000.0 Hz: -66.1 dBFS 6300.0 Hz: -88.6 dBFS 8000.0 Hz: -81.2 dBFS 10000.0 Hz: -99.8 dBFS 12500.0 Hz: -101.0 dBFS 16000.0 Hz: -99.9 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/a8_teams_basic_notification_r4_ping.wav
Acquisition
official_distribution
Source observed
2026-08-09T06:29:46Z
Distribution package
URL ↗
Package SHA-256
dd5fab62b2003993a49ac86ecdc653500e970e29efd8c8b100f17d0adb30987e
Official source ↗

Technical metadata

SHA-25612b8351e81080ab3fa97fd8bbef5902c9c9ef564bf1257b0f032545cb78ef001
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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