Phase 2 Criteria

Phase 2 Criteria

What Phase 1 results unlock or block.

Phase 1 result	Phase 2 action
All pass	Polyphony stress testing; full harmonic field at tempo
b2 (G♮) exercises fail	Operator rebalancing before anything else
Envelope artifacts	ADSR parameter review; release curve adjustment
Beat inconsistent across registers	Stack C ratio implementation audit
Ensemble mask or alias	Stack B level calibration

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Phase 2 scope (when unlocked)

• Polyphony: 16-voice chord clusters, rapid arpeggios, sustained dense texture
• Full harmonic field at performance tempo (not eval tempo)
• IR evaluation: ir/hiljaisuus_station.wav through ReaVerb, using Contrabass-001.wav as dry reference
• Trompette bark confirmation across all velocity layers
• Windows 11 build validation

IR evaluation

Not part of Phase 1. When ready:

Use Contrabass-001.wav as the dry reference. Run through ir/hiljaisuus_station.wav in REAPER (ReaVerb). Compare dry and wet at matched levels. Listen for tail length, color, and whether the room complements or obscures the wheel beating.

Flag: any additional clipping in the wet signal. The +0.8 dBTP intersample peak present in the dry solo render may compound through convolution.

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Cross-ref: vsti/SPEC.md — patch topology and Cw detuning Cross-ref: ir/ — impulse responses