← Back to all measurements

Slack · Call state

calls_you_joined_call_v2

b5b237256b34

Level measurements

Integrated-29.4 LUFS
Maximum momentary-26.8 LUFS
True peak-12.2 dBTP
RMS-31.6 dBFS
Active RMS-28.0 dBFS
Duration1.412 s
Maximum short-term
Loudness range
Sample peak-12.2 dBFS
Sample crest factor19.5 dB
True-peak crest factor19.4 dB
Active duration0.610 s

Level over time

RMS · 10.0 ms · 142 points

Active threshold -56.8 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 0.35 0.71 1.06 1.41 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 centroid468 Hz
Peak frequency495 Hz
200 Hz–8 kHz energy99.9 %
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: -75.6 dBFS 31.5 Hz: -72.7 dBFS 40.0 Hz: -71.7 dBFS 50.0 Hz: -77.5 dBFS 63.0 Hz: -78.4 dBFS 80.0 Hz: -77.2 dBFS 100.0 Hz: -75.9 dBFS 125.0 Hz: -73.7 dBFS 160.0 Hz: -70.0 dBFS 200.0 Hz: -65.3 dBFS 250.0 Hz: -62.0 dBFS 315.0 Hz: -41.5 dBFS 400.0 Hz: -41.7 dBFS 500.0 Hz: -32.9 dBFS 630.0 Hz: -52.5 dBFS 800.0 Hz: -53.2 dBFS 1000.0 Hz: -51.2 dBFS 1250.0 Hz: -59.6 dBFS 1600.0 Hz: -65.0 dBFS 2000.0 Hz: -67.5 dBFS 2500.0 Hz: -76.0 dBFS 3150.0 Hz: -79.4 dBFS 4000.0 Hz: -90.0 dBFS 5000.0 Hz: -91.7 dBFS 6300.0 Hz: -99.4 dBFS 8000.0 Hz: -101.7 dBFS 10000.0 Hz: -105.9 dBFS 12500.0 Hz: -108.2 dBFS 16000.0 Hz: -135.8 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

Slack v4.51.180

Call state

Contents/Resources/calls_you_joined_call_v2.mp3
Acquisition
local_installation
Source observed
2026-08-09T06:27:30Z
Official source ↗

Technical metadata

SHA-256b5b237256b349f4a89e90be224616ed0afb63c59ddc3e29342a02ef1e6baddcb
Analyzed2026-08-09T06:27:30Z
CodecMP3 (MPEG audio layer 3)
Sample formatfltp
Sample rate44100 Hz
Channels1 · mono
Analysis profilenotification-sound-db-bs1770-v2
FFmpegffmpeg version 8.1.2 Copyright (c) 2000-2026 the FFmpeg developers

View canonical JSON →