Brandon Thomas 8eb8f5ff68 T4: BS.1770 loudness oracle test against ffmpeg ebur128 ...

Seven generated signals (sine, pink noise at 48/96 kHz, speech-like at
48/44.1 kHz, gated stereo with silence and sub-gate passages, fs/4
inter-sample peak) written as float WAV and measured by LoudnessMeter
and ffmpeg ebur128 (metadata, 3 decimals per 100 ms). Tolerances: M/S
+-0.1 LU every 100 ms, I +-0.1 LU, LRA +-0.5 LU, true peak +-0.2 dB.
Measured: M/S <= 0.0005, I <= 0.007, LRA <= 0.04 LU, TP <= 0.045 dB.
On the fs/4 tone ffmpeg's true peak is +0.6 dB above the analytic
value, so that case is checked against the analytic peak (ours -0.053).
testkit gains a float WAV writer.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

2026-10-01 00:32:25 -04:00

..

loudness_oracle.rs

T4: BS.1770 loudness oracle test against ffmpeg ebur128

2026-10-01 00:32:25 -04:00