Audio "corrosion" #32

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opened 2026-06-19 11:47:58 +00:00 by CreoSm · 1 comment

I've observed that sometimes the bot will send seemingly random audio output from discord to matrix at random intervals which is (extremely) unpleasant to hear.

I've observed that sometimes the bot will send seemingly random audio output from discord to matrix at random intervals which is (extremely) unpleasant to hear.
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Closing as presumed fixed by #36 (v0.3.0-alpha.5). The "random unpleasant audio at random intervals" matches the DAVE-trailer decode corruption exactly: songbird fed the Opus decoder frames with the DAVE supplemental section still appended, corrupting CELT/hybrid frames whenever a sender's encoder was in an end-sensitive mode — intermittent, content-dependent, and invisible in logs, which is precisely the "corrosion" signature.

Credit where due: the diagnostic instrumentation built for this issue (per-SSRC Tap A/B WAVs + counters) is what proved the corruption was already present at decode output and pinned it to songbird's receive path.

No corrosion has been reported since alpha.5 went live. Reopen if it's ever heard again on ≥ v0.3.0-alpha.5.

Closing as **presumed fixed by #36** (v0.3.0-alpha.5). The "random unpleasant audio at random intervals" matches the DAVE-trailer decode corruption exactly: songbird fed the Opus decoder frames with the DAVE supplemental section still appended, corrupting CELT/hybrid frames whenever a sender's encoder was in an end-sensitive mode — intermittent, content-dependent, and invisible in logs, which is precisely the "corrosion" signature. Credit where due: the diagnostic instrumentation built for this issue (per-SSRC Tap A/B WAVs + counters) is what proved the corruption was already present at decode output and pinned it to songbird's receive path. No corrosion has been reported since alpha.5 went live. Reopen if it's ever heard again on ≥ v0.3.0-alpha.5.
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dark/nether-voicebridge#32
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