All tracks below are matched to the source prompt's first-second RMS. This removes HyperGANStrument's 10-16 dB raw-level advantage on the two reported weak-attack rows. The metric table still uses unnormalized model outputs.

Native-rate results

Metric (9 rows) Current adaptive flow Exact energy anchor HyperGANStrument
Full-note LSD, lower is better 3.4221 dB 3.3845 dB 5.5337 dB
RPA@50c, higher is better 0.9374 0.9374 0.8900
Prompt attack/sustain error, lower is better 1.2274 dB 0.5586 dB 3.6520 dB
R3 frame-energy error, lower is better 1.5667 dB 0.0020 dB 8.4826 dB
Onset-only target LSD, lower is better 5.9132 dB 5.9462 dB 8.3430 dB

The energy anchor improves prompt dynamics and full-note fidelity without changing pitch accuracy. Its mean onset-only target score is 0.033 dB worse, so listening remains the deciding gate.

Reported weak attacks

Keyboard acoustic 004, -4 st

HyperGANStrument was 10.60 dB louder in the previous raw panel. Compare attack shape here at matched level.

flowstrument-energy-anchor-keyboard-004-minus4.html

Mallet acoustic 056, +18 st

HyperGANStrument was 16.28 dB louder in the previous raw panel. Check impact definition and decay after level matching.

flowstrument-energy-anchor-mallet-056-plus18.html

Previously strong attack

String acoustic 056, +3 st

Check that the energy anchor retains the attack and superior sustain already heard in the current flow.

flowstrument-energy-anchor-string-056-plus3.html

Remaining acoustic gate

Keyboard acoustic 004, -1 st

flowstrument-energy-anchor-keyboard-004-minus1.html

Reed acoustic 011, -1 st

flowstrument-energy-anchor-reed-011-minus1.html