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

dtmf_a

43d0fd2beabc

Level measurements

Integrated-17.5 LUFS
Maximum momentary-17.5 LUFS
True peak-6.0 dBTP
RMS-13.6 dBFS
Active RMS-12.2 dBFS
Duration0.140 s
Maximum short-term—
Loudness range—
Sample peak-6.0 dBFS
Sample crest factor7.6 dB
True-peak crest factor7.6 dB
Active duration0.100 s

Level over time

RMS · 10.0 ms · 14 points

Active threshold -51.9 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 0.035 0.070 0.105 0.140 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 centroid1165 Hz
Peak frequency700 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: -80.4 dBFS 31.5 Hz: -79.4 dBFS 40.0 Hz: -78.5 dBFS 50.0 Hz: -77.6 dBFS 63.0 Hz: -76.7 dBFS 80.0 Hz: -78.2 dBFS 100.0 Hz: -78.6 dBFS 125.0 Hz: -76.4 dBFS 160.0 Hz: -77.9 dBFS 200.0 Hz: -79.7 dBFS 250.0 Hz: -83.1 dBFS 315.0 Hz: -69.1 dBFS 400.0 Hz: -57.8 dBFS 500.0 Hz: -47.4 dBFS 630.0 Hz: -18.0 dBFS 800.0 Hz: -33.9 dBFS 1000.0 Hz: -52.8 dBFS 1250.0 Hz: -56.7 dBFS 1600.0 Hz: -15.9 dBFS 2000.0 Hz: -48.3 dBFS 2500.0 Hz: -68.9 dBFS 3150.0 Hz: -82.3 dBFS 4000.0 Hz: -89.7 dBFS 5000.0 Hz: -96.7 dBFS 6300.0 Hz: -102.5 dBFS 8000.0 Hz: -105.3 dBFS 10000.0 Hz: -105.7 dBFS 12500.0 Hz: -104.5 dBFS 16000.0 Hz: -104.1 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

Zoom Workplace v7.1.5 (84650)

Unclassified

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

Technical metadata

SHA-25643d0fd2beabcb056810e64a17ba6e6e25cce6979e3ebdb6dc7da4c41f47015ee
Analyzed2026-08-09T06:29:47Z
CodecPCM signed 16-bit little-endian
Sample formats16 · 16 bit
Sample rate44100 Hz
Channels1
Analysis profilenotification-sound-db-bs1770-v2
FFmpegffmpeg version 8.1.2 Copyright (c) 2000-2026 the FFmpeg developers

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