316 lines
26 KiB
Markdown
316 lines
26 KiB
Markdown
## ============ 2026-08-18 (LEVEL-PATH STRUCTURE DECODED) ============
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## Две twin-цепочки (аудио vs маска-таблица)
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(a) FUN_180536300 (float, N=0x200=512, per-channel AUDIO):
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вызван FUN_18058e380: FUN_180536300(state+0x18, in+0x8e0+ch*0x800, in+0xe0, band, 0x200).
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lVar1=scratch+N*32; normalize lVar1[i]=in[i]*2pi/(os*sr) (0x18052da00=pointwise scale);
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per band: FUN_180536f90(lVar2, base, band_i, lVar1, N) -> copy lVar2->base(0x1800096c0);
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base*=product (0x180008700); if band_active: save->lVar4, product=1.0; out=copy lVar4->param_2.
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=> out = PROD_active_bands mask_band(норм. аудио). На |x|<1 z=ротор(1e-5)=i -> маска ~пост.
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(b) FUN_18056e3e0 (double, N=0x400=1024): вызван FUN_180563440 (6 band-слотов). Аналогично.
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Вход param_3 в контексте FUN_180563440 = LUT-рампа [0,1] (param_1+0x198, шаг 1/1023),
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shape через кривую param_1+0x188 => это УРОВНЕВАЯ LUT-маска, не аудио.
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## FUN_180563440 (per-block маска-таблица, 6 полос)
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- param_1+0x198[i] = i*(1/1023), затем маппинг кривой param_1+0x188:
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pfVar10[0]=min, [1]=max, [3]=gamma-кривая, [4]=флаг linear, [+0x14]=nodes.
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linear: val = min+(max-min)*exp(log(x)/c) = min+(max-min)*x^(1/c) (gamma).
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- 6x FUN_18056e3e0 -> 6 полосных масок (param_1+0x4198+0x2000k); комбайн -> param_1+0x2198;
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затем LUT (param_1+0x98): пары (x=i*fVar3, y=mask) на 0x3ff точек (уровень->маска).
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- вызывается FUN_1805631c0 (vtable 0x1824b14f0) + FUN_180563ce0/563fa0 (следующие шаги).
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## FUN_180563ce0 — per-bin IIR level-трекеры (342 бина, 2nd-order state pairs)
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- Константы 0x1824c4780/4788/4790/4798 (double A/B), 0x40400000=3.0f (порядок).
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- Буферы: param_1+0x28 (float order), +0x40/+0x58 (double state A/B), stride 0x60, 0x156 итераций.
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=> на каждый бин ставится 2nd-order IIR (атака/релиз) для сглаживания уровня.
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## FUN_180530b60 — параметры сглаживания (log-interp + exp)
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- cac=exp, cd0=log. freq-диапазон: online 800..1200 Гц (DAT_1824c4594=800/45a8=1200),
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offline 15..180 Гц (4418=15, 4518=180), gain 0.01..1.0 (3c70=0.01, 3ea4=1.0).
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- FUN_180533340(+0x2404e8/0x340500/0x440518, ...) — инициализация smoothing-фильтров
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(3 экземпляра: 3 канала/oversample?).
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## FUN_180530d30 — per-bin СПЕКТРАЛЬНЫЕ ВЕСА (0x5406b8/0x5406c8/0x5406d8/0x5406e8)
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- fVar9 = cdc(2000/(sr*0.5)*513/(i+1)) = cdc(2000/f_bin) — pow? (IAT-стаб 0x181b3b378).
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- fVar11 = [param_1+0x540880]*0.25*fVar9*fVar13 (0x540880/884 = per-band уровень/сенс).
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- buf[i] = cd6(0.1, 1.0/(exp(1/(1+x))*dVar1)); buf_c[i]=1-buf[i]. cd6 = log10? (0x1824c3f70=0.1).
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- dVar1 = (sr/[param_1+0x1a0])*[param_1+0x1ac]*0.001.
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- => частотно-зависимый вес: 2000 Гц (f_bin больший) -> fVar9 другой, чем 500 Гц.
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Кандидат объяснения red2000>red500 (dual_b1q): вес нормирует уровень бина выше на
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высоких частотах -> избыток уровня больше -> глубже крас. ПОТРЕБУЕТ ВЕРИФИКАЦИЮ.
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## IAT-хелперы (0x181a14xxx — jmp [GOT 0x181b3b3xx], цели 0x6fffff, динамич. загрузка)
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- Последовательность стабов каждые ~6-12 байт => стандартные CRT math (в порядке импорта).
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- Семантика по алгебре: cac=exp, cd0=log (log-interp в 530b60), cdc=pow (2-арг, pow(x,0.7/2.0)),
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cd6=log10? (cd6(0.1, y)=log10(y)/log10(0.1) в 530d30), cd6 может быть log2.
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- cf4/ce2/c9a/cc4/cfa — для case1/case8 генераторов (cfa в FUN_1805343e0: w=1/cfa(fc*pi/fs)
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=> cfa=sin, cf4-цепочка для q-клипинга).
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## КЛЮЧЕВОЙ ВЫВОД
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- Частотная СЕЛЕКТИВНОСТЬ маски = freq-path нотч |2B/A| (m2c, центр=fc) на оси бинов
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(t1kq fc-скан rmse=0.007).
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- ГЛУБИНА/уровневая зависимость = level-path LUT (уровень->маска, кривая +0x188) +
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per-bin IIR-трекеры уровня (0x563ce0) + спектр. веса (0x530d30, 2000/f_bin).
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- dual_b1q (red2000>red500 при q<1) требует совместной модели level*веса*нотч —
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единственный способ получить больше cut на 2000 чем на 500 при band=500.
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## ============ UPDATE: CONSUMER OF PER-BIN WEIGHTS FOUND (FUN_180529fe0) ============
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## FUN_180529fe0 — per-block СПЕКТРАЛЬНЫЙ ПРИМЕНИТЕЛЬ (5 каналов, ключевой DSP-цикл)
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Сигнатура (param_1=DSP-объект, param_2, param_3, param_4=nBands). Для каждой полосы:
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1. 0x540678[band] *= (fVar30/sr) * 0x540870 (нормализация уровня × sens 0x540870)
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2. IIR-сглаживание спектра (5 каналов, состояния 0x540528/2c04f8/3404f8/4c0528/440510,
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через DBL-петли: y += x*a + y*b, backward/forward проходы) => level-трекер per-bin
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3. 0x5406f8 = резонансная реакция полосы (копия 0x540678[band], каскад 0x540688-коэфф,
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scale fVar30/nBands) [здесь twin-результат 0x5406f8]
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4. 0x5406f8 *= 0x540698 (частотная ось, log-интерп) и *= 0x5406a8 (axis)
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5. *** ПРИМЕНЕНИЕ per-bin ВЕСОВ: ***
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thunk_180003c40(lVar21=0x5406f8+N, 0x5406c8, 0x5407c8[band], iVar19, 4) -> 0x5407c8 += 0x5406c8*contrib
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thunk_180003c40(lVar17=0x5406f8, 0x5406e8, 0x5407c8[band], iVar19) -> 0x5407c8 += 0x5406e8*contrib
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(0x5406c8=1-0x5406b8, 0x5406e8=1-0x5406d8 — КОМПЛЕМЕНТАРНЫЕ веса)
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6. накопление: thunk_180005a20(0x5407c8[band], 0x540678[band], iVar19)
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7. dry/wet: 0x1c[band]*scale (0x5408b8==0: +0x540678*0x1c[band]*...)
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8. FFT-свёртка в time-domain: FUN_180535a70(0x540628, 0x540678[band], nBins+1) -> frame;
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FFT-таблицы 0x540548/550/598; 0x540668 -> out-буфер (0x3f800000=1.0 в DC-бин).
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## FUN_180530d30 — точная формула per-bin весов (0x5406b8/6c8/6d8/6e8)
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iVar6 = NFFT/2+1; fVar12 = 2000/(0x24*0.5) [p24=40000 -> fVar12=0.1]
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fVar13 = 4.0 (или 1.0 если 0x5408b8); dVar1 = (0x24/sr)*0x1ac*0.001 [секунды]
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for i in bins:
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fVar9 = cdc( (fVar12*iVar6)/(i+1) ) = exp?/pow? (0.1*513=51.3 / (i+1))
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fVar11 = 0x540880 * 0.25 * fVar9 * fVar13
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dVar10 = 1/(1 + fVar11/(0x540880*4)) = 1/(1+fVar11/(4*level))
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dVar10 = exp(dVar10 * fVar11)
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dVar10 = cd6(0.1, 1.0/(dVar10*dVar1)) = log10(1/(dVar10*dVar1))/log10(0.1)
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buf0x5406b8[i] = dVar10; buf0x5406c8[i] = 1-dVar10
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(аналогично 0x540884 -> 0x5406d8/6e8)
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Численно (p24=40000, sr=48000, 0x540880=1, 0x5408b8=0):
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bin500: fVar9=exp(4.4)=81 -> w=2.49 ; комплемент 1-w=-1.49
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bin2000: fVar9=exp(1.17)=3.2 -> w=1.60 ; комплемент = -0.60
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=> частотно-зависимые (сильно убывающие с частотой) веса. НО q входит через
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0x540880/884 (устанавливается из полосы) и через 0x5406f8-резонанс.
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## BUFFERS (map окончательный)
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0x540698 freq-ось (log-интерп, множится в band-ответ)
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0x5406a8 axis-буфер (множится в band-ответ)
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0x5406b8/6c8, 0x5406d8/6e8 per-bin level-веса (пары w, 1-w) — потребляются в FUN_180529fe0
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0x540678[band] per-band спектр/вход (0x10-стрide, 2 слова = {ptr,count}? нет, 0x540678+0x10k)
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0x5407c8[band] per-band маска-аккумулятор
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0x540748 warp-ось = 8.3 - 7/(1+exp((x*20000-120)*(-0.01))) ~= 1.3 (DC-буст 6.68), НЕ f/(f+K)!
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0x540628 FFT-work, 0x540548/550/598 FFT-таблицы, 0x540668 out, 0x5406f8 band-фильтр/рабочий
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## FUN_180535ae0 = конструктор DSP-объекта: 0x540874=1.0, 0x54087c=0.5, 0x540884=1.0,
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0x54088c=1.0, 0x540894=1.0, 0x24=0x472c4400=40000.0f (!), 0x5408ac=0x01000000.
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## FUN_180535f10 = деструктор (free всех 0x5406xx-буферов).
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## ИТОГ: dual_b1q объясняется комбинацией
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mask(bin) = |резонанс_полосы|(bin) × freq_axis(bin) × level_weight(bin, 2000/f_bin)
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где level_weight через exp(51.3/(bin+1)) даёт РАЗНЫЕ веса на 500 и 2000 Гц, и на 2000 Гц
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маска глубже при низком Q (резонанс шире/мелкие). Верифицировать в standalone-харнессе.
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## ============ UPDATE 2026-08-18: 0x530d30 weights DECODED + NUMERICALLY NEGATIVE ============
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- Exact formula (decomp 22330, FUN_180530d30): per bin
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base = (2000.0/(sr*0.5))*iVar5/(bin+1) [iVar5=NFFT/2+1]
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w8 = powf(base, 0.25)
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v = [0x540880]*0.25*w8*fVar12 [fVar12=4.0 if offline flag, else 1.0]
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q = 1/(1 + v/([0x540880]*4)) (second pair 0x540884: q2=1/(1+v2/[0x540884]))
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dVar1= (sr/[0x1a0])*[0x1ac]*0.001
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w = 0.1^(1/(max(q*v,floor)*dVar1)) [0x1824c3f70=0.1, 0x1824c3e30=0.001]
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buf0x5406b8 = w ; buf0x5406c8 = 1-w (and 0x5406d8/6e8 with 0x540884)
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- Constants locked: c3d3c=0.25, c4334=4.0, c3d8c=0.5, c45b4=2000.0, c41e0=2.0.
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- NUMERIC RESULT: at any plausible runtime (sr=44100, NFFT=1024, L=0.05..1.0, hop 1024..4096,
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n1ac 1..12) -> w(500)=w(1000)=w(2000) ~= 0 (=10^-20..10^-0.07); complements ~= 1.
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=> the 0x530d30 level-weights DO NOT create the 2000-vs-500 tilt (ratio2000/500 ~1.0).
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- CONCLUSION: dual_b1q red2000>red500 does NOT come from 0x530d30. Suspect = freq-axis warp
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(0x540698 '8.3-7/(1+exp((x*20000-120)*(-0.01)))' ~1.3 DC boost) x resonance. The model's
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empirical tilt {500:1.414,1000:1.454,2000:1.795} stays as the placeholder; replacing it
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requires FUN_180529fe0 consumer step-5 algebra + runtime level values (Phase-4/5 dive).
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## ============ UPDATE 2026-08-18 (CHECKPOINT): tilt != warp, level-path decoded ============
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- FUN_180563ce0 = INIT of per-bin IIR level trackers (not update): 0x156=342 bins, order=3.0f (0x40400000),
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coeff A/B mvaps 0x24c4780/4790, strided fill; 3rd pass fills 0x40e00000=7.0f (post-gain). FULL: /tmp/opencode/f_563ce0.dis.
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- Level-path map: 0x563440 (LUT curve +0x188: [min,max,gamma,linear flag,nodes]; 6 bands via 0x56e3e0
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double-twin N=1024 with LUT-ramp input; combine -> +0x2198; LUT pairs +0x98 at 0x3ff pts level->mask).
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NOT in decomp_funs.txt; use /tmp/opencode/f_563440.dis + level_notes.md (LOCAL: /home/m/re-tools/handoff/).
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- **DECISIVE NEGATIVE**: warp(2000)=0.773 cannot reach dual red2000=15.2dB — C=depth·warp·LUTmax=0.864·0.772·0.667
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=0.445 < needed 0.826 (C=1-10^(-15.2/20)). warp is NOT the empirical tilt. The gap is closed by the blend
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step (0x5407c8 += weights·res_upper/lower, freq-axis 0x540698) + FFT-conv 0x535a70 shaping.
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- CHECKPOINT decision (user): STOP; next session = diagnostic bridge (two-term mask: warp·LUT + α·freq-axis_term,
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fit vs measured curves) BEFORE transcribing FFT. do NOT curve-fit without the blend term.
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## ============ UPDATE 2026-08-18 v2: BRIDGE DONE + FUN_180529fe0 full algebra ============
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- **Полный декомп FUN_180529fe0: /tmp/consumers_out.txt:471-1277** (f529fe0.dis в /tmp обрезан на 52a813).
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Поправки к прежним заметкам:
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- 0x5408b0 = таблица ГРАНИЦ бинов (прелюдия: cvttss2si+imul+idiv, iVar20=band-start, iVar19=len), НЕ LUT.
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- Уровневая маска резолвится ИНЛАЙН: fVar30=0x5408b0[idx]; fVar25=(float)FUN_181a14cdc()=pow (IAT→GOT
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0x181bab378, CRT-цель вне дампа); пары `×(fVar30−fVar25)`/`+fVar25·` (dry/wet уровня).
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- Цепочка per-band (по декомпу): 0x540678=res; res*=∏0x540688[k]; res*=(fVar30/nBands); *=fVar29·0x54088c
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(fVar29=(fVar30/0x1a0)·0x540870); IIR 0x52d650 state 0x440518; двойное IIR-сглаживание (double,
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states 0x3404f8/2c04f8 и 0x440510/3c0510); 0x5407c8+=0x5406c8·res_up + 0x5406e8·res_low + 0x540678
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(003c40, kernel vfmadd213pd) — **АДДИТИВНЫЙ аккумулятор**; 0x540678 *= res(008700) и *= warp 0x5406a8;
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offline: *=0x1c[band]·fVar27 (глубина, D=-0.5@0x24c4670); dry/wet: mask·fVar30·0x540888 + (fVar11−fVar30)
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(fVar11=1.0 c3ea4) — **педастал**; FFT-conv 0x535a70 (fwd, window 0x540550/598, kill mirror,
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inv, ×0x540658, fwd, inv, 0x540668[0]=1.0[1]=0, apply FIR к param_2[band]).
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- Константы offline: c3ea4=1.0, c3e28=0.8, c4670=−0.5, c4674=−0.7, c4680=−1.0, c3c58=0.001.
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- **BRIDGE RESULT (model_fir.py, rmse=0.236 dB)**: C(f)=1.221·LUT(log10(L0/res)) + 0.358·warp(f)^3.143.
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res(500;fc500)=0.117 Q-независим -> C500-константа без tilt; xv(2000)=0.308..−0.656 (Q) -> C2000-и-гг-форма;
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аддитивный терм warp^3.14 даёт +0.15 на 2000 и ≤0.02 на 1000 (иначе t1k рушится) — единственная точка,
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совместимая с 36 замерами. Мультипликативный warp·LUT проваливается (>10 dB). warp^3.14≈π: кратный каскад?
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Остаток 0.7 dB (Q=0.1) = LUT-колено 0.574 -> нужен FFT-уровень (0x535a70 + окно 0x540658 + freq-axis
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0x540698), см. SESSION_HANDOFF §5-6.
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## ============ UPDATE 2026-08-18c: FFT-CONV LOOP FULLY MAPPED (Phase 5 step 3 partial) ============
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Per-band FFT-conv loop disasm: /tmp/opencode/f_52b570.dis (0x52b550-0x52b8b5 == consumers :1195-1271).
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### What 0x535a70 / helpers ARE (they're dispatchers, real kernels in base-CRT):
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- 0x535a70 = FFT fwd dispatcher -> 0x140a10 (scalar) / 0x140a70 (vector). NOT hand-transcribable, unnecessary.
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- 0x540548/0x540550/0x540598 = FFT-PLAN table ptrs (plan 0x540530; +0x18/+0x20/+0x68), NOT windows.
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Plan built by FUN_18052dc30(param_1+0x540530, [0x64]=FFT size, 0x540868). 0x540534 = plan+0x4 = N/2 usage.
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- Per-band ops (dispatch variants collapsed): iVar20=N/2; r14=FIR(0x540668);
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1) 0x535a70(fftctx 0x540628, mask, N/2+1) forward FFT of mask
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2) 0x2210(0x540628, 0, r14, N/2+1) inv FFT into FIR
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3) fwd FFT (0x2180/0x1bb0) ; zero @[N] ; 0x52d920(r14+4, xmm13, N/2-1)=fill LOW half;
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0x52db50(r14+4+N/2, xmm9, N/2-1)=fill HIGH half; inv FFT (0x1a90/0x19d0)
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4) 0x140b30/0x140aa0(r14,r14,N/2+1) in-place complex op
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5) fwd FFT ; zero @[N] ; 0x52d990(r14, 0x540658+N/2, N/2) = FIR *= WINDOW 0x540658;
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0x52db50(r14+N/2, xmm9, N/2) = fill HIGH half; inv FFT
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6) FIR[0]=1.0f, FIR[1]=0; if 0x540890!=0: complex ops (0x1880/0x1ca0) + FIR *= 0x540888 over 2*N;
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copy FIR->out (0x1df0/0x1f70).
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### Key unknowns (static analysis exhausted):
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- **0x540658 window content**: ONLY 1 direct ref in whole dump (the read at 0x52b771). Not allocated in
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consumers_out (:119-135 alloc 668/698/6a8/6b8/6c8/6d8/6e8/6f8/708/718/798), NOT set by 52dc30 (plan tables
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only at +0x18/0x20/0x48/0x58/0x68). Written only indirectly -> needs runtime capture OR plan-internal
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region. If 0x540658 is freq-shaped, it is the source of warp^3.14 (~π) & LUT-knee 0.574.
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- xmm13/xmm9 fills = config constants from FUN_180529fe0 prologue (offline), unknown values.
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- FFT size N = 2*0x540534; 0x1a0 = pow(2,floor(log2(SR/44100)))*412 (SR 44.1k -> 412); 0x540868=0x1a0*iVar9*8.
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### Conclusions:
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- freq-axis NOT the boost source (offline const). FFT tables NOT windows. The whole freq-shaping funnels
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through 0x540658 window in step 5 + the offline fill constants. To resolve: runtime capture of 0x540658
|
||
(needs the plugin under a debugger) OR empirically back out its response from the model residual.
|
||
- Recommend: since bridge already at 0.236 and FFT window content is static-invisible, next high-value move =
|
||
full pipeline render (step 5) rather than more static FFT mining.
|
||
|
||
## ============ UPDATE 2026-08-18b: FREQ-AXIS 0x540698 BUILDER (decomp :21735-21757) ============
|
||
- Allocation+fill of freq-axis 0x540698 lives in the SAME function as the 0x540668 FIR window alloc
|
||
(decomp_funs.txt :21735-21757, the builder calls FUN_18052e190(param_1+0x540698, count=0x54086c)).
|
||
- OFFLINE branch (param_2=='\0'): the whole 0x540698 array is filled with ONE scalar
|
||
fVar29 = (DAT_18262b5c8 * LUT_BANDBOUNDS[uVar3+1] * DAT_18262b704 * LUT_BANDBOUNDS[uVar3] + fVar22)
|
||
* DAT_18262b700
|
||
(DAT_18262b5c8/DAT_18262b704/DAT_18262b700 = Soothe2ModuleBase statics, uVar3 = 0x5408b0 boundary index).
|
||
=> OFFLINE freq-axis is CONSTANT (per-band-band-width scalar), NOT the '8.3-7/(1+exp...)' formula.
|
||
The exp-formula suspicion was wrong for offline path. Any per-bin frequency dependence must enter via
|
||
WARP 0x5406a8 (freqpath.cpp, already transcribed) and the 0x540668 FIR (FFT-conv impulse).
|
||
- 0x540668 (FIR window, count 0x54086c*2) allocated right before; filled with 1.0f (0x3f800000) in offline
|
||
init at :21798-21804 (<=> flat impulse). So in offline the FFT-conv kernel starts as a pure del
|
||
a; the real kernel arrives from 0x535a70 processing (to transcribe next).
|
||
- 0x5406a0 = element count used by the fill loop (large, ~0x54086c). Buffer 0x5406b8..0x5406e8
|
||
(level-weights caps) allocated at :21753-21757 with the same count.
|
||
|
||
## ============ UPDATE 2026-08-18 (Phase 5 step 2): FUN_180529fe0 COMBINE ALGEBRA — FULL CHAIN DECODED ============
|
||
Source of truth: FULL decomp in /tmp/consumers_out.txt:471-1277 (the decomp_funs.txt copy at :11425 is
|
||
TRUNCATED — Ghidra dropped the middle because of the noreturn/dispatch thunks `(*DAT_181bab008)(&..,&..)`
|
||
guarding small-vs-vectorized variants; the consumers_out.txt copy came from a previous session's
|
||
getFunctionContaining(0x52ac64) and has the complete per-band loop + FFT-conv).
|
||
|
||
### Data-type map (from allocation sites, consumers_out :119-265)
|
||
- 0x5406f8 double[], size (0x540868)<<3 — resonance/freq-blend buffer (upper half = mirror)
|
||
- 0x5406a8 float[] size 0x54086c — WARP (the tilt!)
|
||
- 0x5406c8/6e8 float[] size 0x54086c — level-weights' complements (0x530d30 writer)
|
||
- 0x540678[band], 0x540768[band], 0x5407c8[band]: pointer arrays stride 0x10 (re/im or cur/prev)
|
||
- IIR states: 0x440518 (+0x4c0528), 0x3404f8, 0x3c0510/0x440510
|
||
|
||
### Thunk identity table (full decomp pairs; A = small stub, B = vectorized body)
|
||
- 009be0/00ffe0 : buf = scalar·buf (float; 004700-pair: double) BODY: mulss
|
||
- 008700/00fb60 : dst *= src (in-place, float, vmulss) ← WARP APPLY (dst=2nd arg)
|
||
- 011940/010860 : copy/mirror (double, complex stride via 5th arg==4; kernel 0x181a99c40)
|
||
- 006e40/004720 : dst = src·scalar (B double: vmovsd) ← freq-axis blend
|
||
- 015060/014c40 : buf += scalar (B double: vaddsd) ← dry offset
|
||
- 005a20/006840 : acc += src (kernel 0x18001a5a0, double)
|
||
- 003c40/00ee20 : acc += a·b (kernel 0x1800752e0: vfmadd213pd, DOUBLE) ← WEIGHT APPLY
|
||
- 008d60/00dc40 : 3-ptr combine, TBD (mask accumulate)
|
||
- 26b820/3a06a0 : big kernel (sets MXCSR; loads rodata 0x181f31680/34a80 tables) → likely exp/sat s.t. begin? TBD
|
||
- 2dc0e0/367980 : fills dst buffer with constant pattern 1.0/0.0 (vmovdqu rodata) — TBD (dry/wet?)
|
||
|
||
### CONFIRMED per-band pipeline (lines ref 638-1269) for the rendered (online) stage
|
||
per band (band in [iVar20, lVar18)):
|
||
1. scale: 0x540678[band] = ((fVar30/0x1a0)·0x540870 · 0x54088c) · 0x540678[band] (:656)
|
||
2. IIR: FUN_18052d650(state=0x440518, out=0x5406f8, in=0x540678[band]) → smoother (:668)
|
||
3. online: blend & weight into mask:
|
||
0x5406f8 = 0x540698·(1−mix) 006e40 mix=0x54087c (:814)
|
||
0x5406f8 += mix·0.8 015060 c3e28=0.8 (:823)
|
||
0x540678[band] = bigkernel(0x540678[band],0x5406f8) 26b820 (:832)
|
||
0x5407c8[band] = combine(0x5407c8[band],0x540678[band],0x5406f8) 00dc40 (:843)
|
||
mirror 0x5406f8 halves (011940, n and n+stride4) (:852 861)
|
||
WEIGHTS: 0x5407c8[band] += 0x5406c8·0x5406f8_upper 003c40(stride4) (:869)
|
||
0x5407c8[band] += 0x5406e8·0x5406f8_lower 003c40 (:877)
|
||
0x5407c8[band] += 0x540678[band] 005a20 (:885)
|
||
4. WARP (TILT): 0x540678[band] *= 0x5406a8 008700 (:938,:947)
|
||
5. dry/wet: 0x540678[band] = mask·(fVar30·0x540888) + (1−fVar30) fVar30=0x540874−rnd (:1184,:1193)
|
||
6. FFT-conv: FUN_180535a70(0x540628, mask, n+1) fwd-FT → window×0x540658 (52d990) → inv-FT
|
||
→ impulse 0x540668, DC=(1.0,0.0) (:1245) → ×0x540888 → conv(impulse, audio param_2) → out
|
||
|
||
### THE TILT (replaces empirical {500:1.414,1000:1.454,2000:1.795})
|
||
warp 0x5406a8 = 0.87·x/(1+x/K), K=exp(2.0723267)≈7.942, x = f_bin/2000 [c3e50=0.87, c4208, c45b4=2000]
|
||
warp(500)=0.211 warp(1000)=0.409 warp(2000)=0.773 (linear depth ratio 2000/500 = 3.67)
|
||
applied directly to the FLOAT mask before FFT-conv ⇒ enters the dB via the impulse response.
|
||
NOTE: 3.67 linear is ≫ the fitted tilt ratio (1.27) ⇒ the rest comes from the LUT-level flattening
|
||
(step 5 dry/wet + 0x540888) and the level sidechain 0x563xxx — that is the Phase-5 step-4 integration.
|
||
|
||
## ============ 2026-08-18e (STEP4: runtime-values, TIME-DOMAIN from renders) ============
|
||
|
||
## Атака уровня: fast (≤ ~1 STFT frame / ~20ms) — ИЗМЕРЕНО на рендерах
|
||
- Goertzel-огибающая 2000Hz по dual_b1q_*.wav (100ms/20ms окна): env ПЛОСКАЯ 0.18 (q0.1),
|
||
0.30 (q1), 0.32 (q10) уже на 0.2s; пик 0.208/0.344/0.364 (атака, ~первые 50ms меньше подавления).
|
||
- red(dB) по времени (вход dual 500+2000, канал 2000): t=0: 13.2 dB -> t=0.02s: 15.2 dB (steady).
|
||
=> reduction выходит на стационар к ~20ms. 0.540658-окно/level-smooth = быстрые → для parity
|
||
доминирует steady-state C (B.12, 0.268 dB); атака нужна лишь как короткий onset (~1 frame).
|
||
- Релиз НЕ наблюдается на tone->silence (out=G*in, in=0→out=0): для релиза нужен burst-тест с
|
||
second tone-активностью между бёрстами; dburst-огибающая зашумлена 50ms-окном поверх 100ms бёрстов.
|
||
|
||
## Runtime-константы (FUN_180537e90, quality-setter, decomp ≈:8534)
|
||
- 0x1ac = oversample-фактор ПО КАЧЕСТВУ: quality1->4, 2->8, 3->0x10(16), else->2.
|
||
- 0x1a4 = fVar6 / (float)0x1ac (см. строку 482: есть деление на 0x1ac => 0x1a4 = analysis-res".
|
||
- 0x1a0 = pow(2,floor(log2(SR/44100)))*412 (@44.1k = 412) — база cell-count геометрии.
|
||
|
||
## Коэф-таблицы IIR 0x24c4780/0x24c4790 (soothe_mem.bin offset 0x24c4780)
|
||
- floats: {1,0,0,0,-1,0,0,0,0,1,0,0,1,1,0,0} (A) / {-1,0,...} (B) — шаблон блочный, НЕ чистая
|
||
attack/decay константа; doubles: 0.0078125=1/128 на 4-й/6-й слотах. => отложить, не декодить.
|
||
- Более информативна ctor-инициализация 0x540880=0x540884=1.0f (movl 0x3f800000, disasm 0x535d19).
|
||
|
||
## ============ 2026-08-18f (STEP5b: FULL FRAME-RENDER PILOT - WORKS) ============
|
||
## framed_render.py: STFT(2048/512, sqrt-Hann) -> per-bin amp 2|X|/wsum (att 11ms/rel 80ms)
|
||
## -> B.12 mask C=g*LUT(xv)+w*warp^a, gain=1-C -> OLA. VALID: dynamics match, steady ~B.12.
|
||
## al_* DATASET (центр band fc=1000 sens12, tone1000, level-свип 0..-24dBFS):
|
||
## lvl 0,-3,-6,-9,-12,-18,-24 dBFS -> red -104,-6.1,-7.9,-9.7,-11.6,-15.4,-19.5 dB.
|
||
## xv=-0.269..0.931 (res_center=0.1171) => REAL LUT-нога КРУЧЕ frozen-узлов (cap 0.667):
|
||
## на xv=0.931 C->1 (клиф), у B.12 только -9.5. КОНФЛИКТ с t1k fc-scan (15.6@0dBFS там же)
|
||
## => премьюза fc-scan рендеров неверна (вход/настройки) - ПЕРЕСОГЛАСОВАТЬ.
|
||
## al_* = калибровочный датасет для замены LUT-узлов B.11 (structural 0.540658-piece).
|
||
|
||
## ============ 2026-08-18g (STEP5c: DATASET INCONSISTENCIES DECODED) ============
|
||
## КЛЮЧ: RPP несёт base64 XML "<SOOTHE2STATE><PARAM id= value=/>" — декодер:
|
||
## b64 = join всех строк-бейс64 (>40 chars) из .rpp; decode utf8; regex id/value.
|
||
## 1) t1k/t1kq _b1f_* = МУЛЬТИБАНД: band1 on sens=12 + band2 on sens=-12 (fc=1778.7, q=4.5)
|
||
## + band3/4 on (defaults) => НЕ single-band. B.12 фит впитал multi-band depth-split
|
||
## => LUT_obs у b1f сидит на ДРУГОЙ кривой (0.07-0.17 vs 0.38-0.63 у al_/dual).
|
||
## 2) t1kq_only1_* = НАСТОЯЩИЙ single-band fc-скан (band2 on=0). НО в RPP НЕТ 'depth' =>
|
||
## default depth (не 0.8639736) => нельзя мешать с al_/dual без нормализации depth.
|
||
## 3) tone_amp АБСОЛЮТНАЯ калибровка НЕСОСТОЯТЕЛЬНА (t1k: 1.058 vs true 0.215; t1kq: 0.284 vs 0.058).
|
||
## Для xv использовать FFT-амплитуду: seg=1..4s, Hann, A=4|X|/N (проверено: lv12 0.17759==peak).
|
||
## 4) ЧИСТЫЕ single-band датасеты (depth=0.8639736, band1 один):
|
||
## dual_b1q (22) + al_* (6) — СОВМЕСТИМЫ ~0.05 LUT_obs:
|
||
## dual@2000 xv -0.66..0.31 -> LUTobs 0.434..0.547 (гладкая S-кривая)
|
||
## dual@500 xv=0.574 -> 0.564
|
||
## al_* xv -0.42..0.63 -> 0.381..0.626 (круче внизу, ~0.05-0.08 выше dual@2000)
|
||
## Остаток dual@2000 vs al_ на низких xv => семантика уровня: per-band bandpass-энергия
|
||
## (включает ликование др. тонов) vs per-bin амплитуда — НЕ РЕШЕНО. Кандидат-тест Q=10
|
||
## (рес-широкая, ликование 500-тона в band1 при измерении 2000).
|
||
## 5) b2_* семейство (band2 fc=1778.7, sens=12): b2only_12, b2q_*, b2_b1s0/on, b1on12_b2on12
|
||
## (band1 500 + band2 1778, оба sens=12) — датасет multi-band depth-split для проверки.
|
||
## 6) ПЛАН (следующая сессия): (а) refit single-band LUT по dual_b1q+al_ (не b1f!);
|
||
## (б) уточнить depth-контекст t1kq_only1 перед микшированием; (в) решить семантику уровня
|
||
## через dual Q=10; (г) влить в framed_render.py.
|