Notification Sound MeasurementsMeasured levels and spectral characteristics of current OS and app event sounds
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macOS alert tones · System alert

Welcome-EncoreInfinitum

b3f5c21c4db5

Level measurements

Integrated-23.9 LUFS
Maximum momentary-21.1 LUFS
True peak-9.0 dBTP
RMS-29.6 dBFS
Active RMS-26.9 dBFS
Duration3.462 s
Maximum short-term-26.6 LUFS
Loudness range19.9 LU
Sample peak-9.0 dBFS
Sample crest factor20.6 dB
True-peak crest factor20.6 dB
Active duration1.890 s

Level over time

RMS · 10.0 ms · 347 points

Active threshold -58.3 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 0.87 1.73 2.60 3.46 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 centroid486 Hz
Peak frequency621 Hz
200 Hz–8 kHz energy78.9 %
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: -78.7 dBFS 31.5 Hz: -75.5 dBFS 40.0 Hz: -72.3 dBFS 50.0 Hz: -69.4 dBFS 63.0 Hz: -62.7 dBFS 80.0 Hz: -56.3 dBFS 100.0 Hz: -56.2 dBFS 125.0 Hz: -57.3 dBFS 160.0 Hz: -41.0 dBFS 200.0 Hz: -49.5 dBFS 250.0 Hz: -46.7 dBFS 315.0 Hz: -48.7 dBFS 400.0 Hz: -41.4 dBFS 500.0 Hz: -53.0 dBFS 630.0 Hz: -34.5 dBFS 800.0 Hz: -54.0 dBFS 1000.0 Hz: -43.4 dBFS 1250.0 Hz: -59.2 dBFS 1600.0 Hz: -69.1 dBFS 2000.0 Hz: -73.0 dBFS 2500.0 Hz: -77.4 dBFS 3150.0 Hz: -80.6 dBFS 4000.0 Hz: -79.6 dBFS 5000.0 Hz: -92.3 dBFS 6300.0 Hz: -91.8 dBFS 8000.0 Hz: -94.1 dBFS 10000.0 Hz: -91.1 dBFS 12500.0 Hz: -93.7 dBFS 16000.0 Hz: -94.2 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

macOS alert tones v26.6.1

System alert

EncoreInfinitum/Welcome-EncoreInfinitum.caf
Acquisition
local_installation
Source observed
2026-08-09T06:27:15Z
Official source ↗

Technical metadata

SHA-256b3f5c21c4db520a41ee1df3d7650cf95bd4514519371f2eefc11d67fd200681a
Analyzed2026-08-09T06:27:15Z
CodecPCM signed 24-bit little-endian
Sample formats32 · 24 bit
Sample rate48000 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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