The WeaveSignal contributors
466b32ab6a
The first public release. What it does: https://weavesignal.top; what changed: CHANGELOG.md.
22 lines
1.1 KiB
Text
22 lines
1.1 KiB
Text
# SPDX-License-Identifier: AGPL-3.0-only
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# SPDX-FileCopyrightText: 2026 The WeaveSignal contributors
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#
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# Playout's guard against NaN (staging, 2026-11-01): a tenth of a second of NaN, then a tone,
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# through playout's whole chain at its default settings (playout/chain.liq, the chain that plays:
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# `clip`, the automatic gain control, `clip`, the limiter, `clip`). Without the first
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# clip, the limiter's state stays NaN and everything after is digital silence, and the gain
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# control's stays NaN and leaves the tone untouched. So the tone must come out, and the gain
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# control must have turned it down (a 0.5 sine is about -6 LUFS, 10 dB over the -16 LUFS target, so
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# its 6 dB limit applies, to an rms near 0.18): an rms between 0.1 and 0.3, where an untouched tone is 0.354. Exits 0 when it does, 1
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# when it does not. `just liq-check` runs it.
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%include "probe.liq"
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settings.frame.audio.samplerate := 48000
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settings.log.stdout := true
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settings.log.level := 2
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nan = 0. / 0.
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probe(
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"the tone after NaN",
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sequence([amplify(nan, sine(440., duration=0.1)), amplify(0.5, sine(440.))]),
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60.,
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fun (_, _, rms) -> rms > 0.1 and rms < 0.3
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)
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