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docs/benchmarks/note_detect_v2/BENCHMARK.md

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+# Slopsmith Note Detect Benchmark — v2
+
+A slower-paced companion to v1, focused on what players can actually
+land cleanly. Half-note spacing throughout (~1.33 s between events at
+90 BPM), with multiple **strumming** sections — single chord voicings
+repeated at half-note cadence — to exercise the chord scorer's
+consistency across a sequence of strikes.
+
+- **Tempo**: 90 BPM
+- **Tuning**: E standard (no capo)
+- **Audio**: metronome click track only — play *over* the click.
+- **Duration**: 181 s
+
+## Sections
+
+| Section | Tests |
+|---|---|
+| A. Open strings (slow walk) | Basic mono detection, low → high → low at half-note pacing |
+| B. 5th-fret (slow walk) | Fretted-note detection, ascending half-notes |
+| C. Sustained notes | Long-hold pitch detection, 4 s each |
+| D. E5 power chord strum | Chord scorer on a 2-string voicing, 8 strums |
+| E. A5 / E5 alternating | Chord scorer on a voicing change, 8 strums total |
+| F. E major strum | 6-string dense voicing, 8 strums |
+| G. A major strum | 5-string voicing (skips low E), 8 strums |
+| H. D major strum | 4-string voicing (skips low E + A), 8 strums |
+
+No hammer/pull, no bends — those are next on the algorithm-tuning
+list and aren't useful as benchmarks until that work lands.
+
+## Reporting
+
+Share the diagnostic JSON (schema `note_detect.diagnostic.v1`).
+Filter `benchmark_hint` to bucket v1 vs v2 runs.
+
+## Source
+
+Built by `docs/benchmarks/note_detect_v2/build_benchmark.py`.