Step 02 — Engine Shoot-out

Same graph as Step 01, but the variable is now the engine on the vocal stem: Signalsmith + formant compensation (Step 01's winner) vs Rubber Band R3 (formant preserved, real-time WASM). Instruments are Signalsmith on both arms; drums are never pitch-shifted.

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Stems
Keyboard: Space play/pause · F flip A/B · A/B direct
Diagnostics (latency alignment + Rubber Band health) 

      

      

        Rubber Band build: @echogarden/rubberband-wasm (GPL) — evaluation only; a product
        would need Breakfast Quay's commercial licence. Back to all experiments.