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

Rebound-EncoreInfinitum

c802ae28a87d

Level measurements

Integrated-22.5 LUFS
Maximum momentary-17.8 LUFS
True peak-1.9 dBTP
RMS-29.5 dBFS
Active RMS-23.4 dBFS
Duration3.000 s
Maximum short-term-26.6 LUFS
Loudness range30.9 LU
Sample peak-1.9 dBFS
Sample crest factor27.5 dB
True-peak crest factor27.6 dB
Active duration0.750 s

Level over time

RMS · 10.0 ms · 300 points

Active threshold -48.7 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 0.75 1.50 2.25 3.00 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 centroid765 Hz
Peak frequency703 Hz
200 Hz–8 kHz energy99.7 %
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: -75.4 dBFS 31.5 Hz: -72.3 dBFS 40.0 Hz: -71.1 dBFS 50.0 Hz: -69.9 dBFS 63.0 Hz: -70.0 dBFS 80.0 Hz: -68.0 dBFS 100.0 Hz: -70.1 dBFS 125.0 Hz: -70.1 dBFS 160.0 Hz: -67.1 dBFS 200.0 Hz: -65.0 dBFS 250.0 Hz: -64.4 dBFS 315.0 Hz: -60.1 dBFS 400.0 Hz: -57.9 dBFS 500.0 Hz: -55.6 dBFS 630.0 Hz: -36.0 dBFS 800.0 Hz: -43.9 dBFS 1000.0 Hz: -39.9 dBFS 1250.0 Hz: -67.3 dBFS 1600.0 Hz: -72.7 dBFS 2000.0 Hz: -77.9 dBFS 2500.0 Hz: -83.5 dBFS 3150.0 Hz: -91.1 dBFS 4000.0 Hz: -95.3 dBFS 5000.0 Hz: -94.9 dBFS 6300.0 Hz: -100.5 dBFS 8000.0 Hz: -102.6 dBFS 10000.0 Hz: -107.2 dBFS 12500.0 Hz: -110.5 dBFS 16000.0 Hz: -114.7 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/Rebound-EncoreInfinitum.caf
Acquisition
local_installation
Source observed
2026-08-09T06:27:15Z
Official source ↗

Technical metadata

SHA-256c802ae28a87d08f9a3d42e8eef27a7c1c052cf55fad996f74e2e8314ff1ee420
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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