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

Text-Message-Acknowledgement-HaHa

7eb08433bbc3

Level measurements

Integrated-29.3 LUFS
Maximum momentary-28.0 LUFS
True peak-16.0 dBTP
RMS-26.3 dBFS
Active RMS-25.9 dBFS
Duration0.228 s
Maximum short-term—
Loudness range—
Sample peak-16.0 dBFS
Sample crest factor10.3 dB
True-peak crest factor10.3 dB
Active duration0.210 s

Level over time

RMS · 10.0 ms · 23 points

Active threshold -60.0 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 0.057 0.114 0.171 0.228 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 centroid1261 Hz
Peak frequency1174 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: -117.7 dBFS 31.5 Hz: -115.0 dBFS 40.0 Hz: -111.4 dBFS 50.0 Hz: -112.7 dBFS 63.0 Hz: -108.8 dBFS 80.0 Hz: -109.0 dBFS 100.0 Hz: -108.4 dBFS 125.0 Hz: -102.0 dBFS 160.0 Hz: -102.0 dBFS 200.0 Hz: -100.2 dBFS 250.0 Hz: -96.0 dBFS 315.0 Hz: -89.3 dBFS 400.0 Hz: -86.1 dBFS 500.0 Hz: -83.6 dBFS 630.0 Hz: -78.5 dBFS 800.0 Hz: -71.6 dBFS 1000.0 Hz: -55.0 dBFS 1250.0 Hz: -26.1 dBFS 1600.0 Hz: -52.2 dBFS 2000.0 Hz: -62.1 dBFS 2500.0 Hz: -51.4 dBFS 3150.0 Hz: -51.3 dBFS 4000.0 Hz: -66.9 dBFS 5000.0 Hz: -54.7 dBFS 6300.0 Hz: -69.4 dBFS 8000.0 Hz: -69.0 dBFS 10000.0 Hz: -68.1 dBFS 12500.0 Hz: -78.8 dBFS 16000.0 Hz: -91.5 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

Message

Text-Message-Acknowledgement-HaHa.caf
Acquisition
local_installation
Source observed
2026-08-09T06:27:15Z
Official source ↗

Technical metadata

SHA-2567eb08433bbc35b4c1925cb816f2fd28e0b212c94fc2789a00d8739cebedef1ba
Analyzed2026-08-09T06:27:15Z
CodecPCM signed 16-bit little-endian
Sample formats16 · 16 bit
Sample rate44100 Hz
Channels1 · mono
Analysis profilenotification-sound-db-bs1770-v2
FFmpegffmpeg version 8.1.2 Copyright (c) 2000-2026 the FFmpeg developers

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