Matiq
f73724fee7
- handoff/NOTES_LEVEL.md 4413→397 (голова 24mm5+), хвост → handoff/archive/NOTES_LEVEL_2026-08-18_2026-08-23.md - handoff/NOTES_LEVEL_INDEX.md NEW навигатор, handoff/archive/ whitelist .gitignore - SESSION_HANDOFF/summary → archive + редиректы, NOTES_TWIN/NOTES_CAPTURE сжаты - README.md:13 единственный источник TOTAL 1.594/dual 0.193, AGENTS runbook, BITEXACT_PLAN 9→3 шага (каскад 9-19/k-маппинг/Δ)
30 lines
1.6 KiB
Markdown
30 lines
1.6 KiB
Markdown
# Twin FUN_180535880 — краткая справка (детали → `dsp/twin.cpp`)
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> **Статус:** транскрибирован, gate PASS `dsp/build/twin_check` max rel err 1.27e-5 (float-parity). Полный журнал 2026-08-18 → [`handoff/archive/NOTES_LEVEL_2026-08-18_2026-08-23.md`](archive/NOTES_LEVEL_2026-08-18_2026-08-23.md) + [`handoff/NOTES_LEVEL_INDEX.md`](NOTES_LEVEL_INDEX.md).
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## PHASE-3 Caller + Grid
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- Caller `FUN_180536300` (6218): scratch 52·N, `0x18052da00` ramp `2π/(os·sr)`, `0x18052dbc0` interleave `e^{+iθ}`. Twin всегда `180535880`, sibling `180536f90` dead.
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- Grid: `os=4` (`+0x240080`), `sr=44100` (`+0x24`), `fs_total=176400`, `phase=2π/176400`, cell `k ↔ k/4 Hz` (0.25 Hz).
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- case8: `+0x814=1`, `+0x103=1`, `param_5=10^(sens/20)`, `gain=√param_5=10^(sens/40)` → fit 4.132 ⇒ `sens≈24.65 dB`.
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## PHASE-2 Gate
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- `dsp/twin.cpp`: `build_twin_coeff` (FUN_180533ec0), `cplx_div_exact` (rcpps+Newton), `cplx_mul_exact` (vfmaddsub), `twin_apply` `2·B/A`.
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- Gate: fc-scan 7fc + dual Q0.1..10 PASS.
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## Scalar math
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- Generator: `fVar1=√param_5`, `w0=max(2,freq)·2π/fs_total`, `p=sin(w0)·0.5/Q`, `A=[1+p·fVar1, −2cos w0, 1−p·fVar1]`, `B=[1+p/fVar1, −2cos w0, 1−p/fVar1]`.
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- Twin: `res(z)=2·B(z)/A(z)`, Horner `0x180001fd0`, `cplx-div 0x181a77520`, `z2=z1·z1`.
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## Dispatch
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Стабы → `0x1826159a0=4` (AVX2). Layout `param_3={A[3],B[3]}` `+0x28/+0x38`, coeff `[rsp+k*4]`.
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## PHASE-1 lock
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`√param_5≈4.13` (не 1.995), `sens≈24.65 dB` (host ×2 над XML 12.0). Setter `+0x808` host-side.
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Детали декомпа — `handoff/nls_dasm/twin*.dis`, `dsp/twin.cpp:27`.
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