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Use the white Play buttons. This is an autoencoded same-pitch representation-floor test: the complex encoder sees the real/source waveform. No flow has generated or pitch-transported this state yet.

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Quick acoustic-guitar check

Compare the magnitude residual and complex/transient state against the real target and HyperGANStrument.

Acoustic guitar 010-095-127

Matched NSynth notes

In-the-wild source round trips

Method and results

Listening questions

Decision

The objective acoustic gate fails: complex state is 0.0897 dB worse in LSD and adds 17.55 cents dCFE relative to the magnitude residual. Main-flow training is blocked. Listening may justify one representation-only remediation, but this checkpoint is not promoted.

Caveats

Audio previews are 1.5-second mono 96 kbps MP3; local WAV files remain authoritative.
Absolute WORLD pitch metrics are development diagnostics.
HyperGANStrument is an evaluation baseline only and its local bundle license remains UNVERIFIED.
The lovebird prompt is excluded because WORLD could not track it.