v3.6: build_schematic.py

build_schematic.py

@@ -1,4 +1,4 @@
-"""Generate ANALOG_SCHEMATIC.pdf v3.5 — clean graphical layout."""
+"""Generate ANALOG_SCHEMATIC.pdf v3.6 — clean graphical layout."""
 
 import os
 from reportlab.lib.pagesizes import letter
@@ -139,7 +139,7 @@ def page1(c):
     c.drawCentredString(W / 2, H - 24, "s.AI AUDIO MASTERING SUITE")
     c.setFont(BODY, 10)
     c.setFillColor(HexColor("#aaaacc"))
-    c.drawCentredString(W / 2, H - 42, "Analog Signal Flow Schematic  \u2022  v3.5  \u2022  Stereo")
+    c.drawCentredString(W / 2, H - 42, "Analog Signal Flow Schematic  \u2022  v3.6  \u2022  Stereo")
 
     # ── I/O labels ────────────────────────────────────────────────────
     top_y = H - bh - 18
@@ -246,93 +246,13 @@ def page1(c):
 def page2(c):
     arr_x = W / 2
 
-    # ── Stage 3: Stereo Width ─────────────────────────────────────────
+    # ── Stage 3: Multiband Compressor ────────────────────────────────
     s3_y = H - 28
-    s3_h = 330
+    s3_h = 350
     s3_x = M
     s3_w = W - 2 * M
 
     def s3_body(c, x, y, w):
-        # Crossover
-        cx_h = 48
-        bx, by = sub_box(c, x, y - cx_h, w, cx_h, "LINKWITZ-RILEY CROSSOVER  (4th-order, 200 Hz)")
-        by = text(c, bx, by, "Two cascaded 2nd-order Butterworth filters", BODY, 8)
-        by -= 2
-        equiv(c, bx, by, "Rane AC 22B active crossover")
-
-        y = y - cx_h - 6
-
-        # Split into two columns
-        col_w = (w - 20) / 2
-        left_x = x
-        right_x = x + col_w + 20
-
-        # LOW BAND label
-        c.setFillColor(ACCENT2)
-        c.setFont(BOLD, 8)
-        c.drawCentredString(left_x + col_w / 2, y - 10, "LOW BAND  (< 200 Hz)")
-        c.setFillColor(TEXT_MID)
-        c.setFont(BODY, 7.5)
-        c.drawCentredString(left_x + col_w / 2, y - 22, "Untouched \u2014 mono-safe bass")
-
-        # HIGH BAND label
-        c.setFillColor(ACCENT)
-        c.setFont(BOLD, 8)
-        c.drawCentredString(right_x + col_w / 2, y - 10, "HIGH BAND  (\u2265 200 Hz)")
-
-        y -= 30
-
-        # M/S boxes on the right
-        ms_blocks = [
-            ("M/S ENCODE", "Mid = (L + R) / 2\nSide = (L \u2212 R) / 2",
-             "Resistor summing matrix (matched 0.1% precision)"),
-            ("WIDTH CONTROL", "Mid  \u00d7  mid_scale\nSide \u00d7  side_scale",
-             "Energy-preserving: mid_scale = \u221a(2/(1+w\u00b2))   Range: 80\u2013150%"),
-            ("M/S DECODE", "L = Mid + Side\nR = Mid \u2212 Side",
-             "Resistor summing matrix"),
-        ]
-
-        for i, (name, formulas, desc) in enumerate(ms_blocks):
-            bh = 52
-            bx2, by2 = sub_box(c, right_x, y - bh, col_w, bh, name)
-            for line in formulas.split("\n"):
-                by2 = text(c, bx2, by2, line, MONO, 7.5, TEXT_MID)
-            text(c, bx2, by2, desc, BODY, 7, TEXT_MID)
-            if i < 2:
-                draw_arrow_down(c, right_x + col_w / 2, y - bh, y - bh - 10)
-            y = y - bh - 14
-
-        # Summing
-        y -= 6
-        c.setStrokeColor(ACCENT)
-        c.setLineWidth(1)
-        c.line(left_x + col_w / 2, y + 70, left_x + col_w / 2, y + 10)  # low band vertical
-        c.line(left_x + col_w / 2, y + 10, right_x + col_w / 2, y + 10)  # horizontal join
-        c.line(right_x + col_w / 2, y + 30, right_x + col_w / 2, y + 10)
-        # Plus symbol
-        cx = (left_x + col_w / 2 + right_x + col_w / 2) / 2
-        c.setFont(BOLD, 12)
-        c.setFillColor(ACCENT)
-        c.drawCentredString(cx, y + 6, "+")
-
-        draw_arrow_down(c, cx, y + 4, y - 8)
-        y -= 10
-        c.setFillColor(TEXT_MID)
-        c.setFont(BODY, 7.5)
-        c.drawCentredString(cx, y - 4, "Summing amp  (clip protection if peak > 1.0)")
-        equiv(c, x, y - 18, "Brainworx bx_control V2")
-
-    stage_box(c, s3_x, s3_y - s3_h, s3_w, s3_h, "STEREO WIDTH \u2014 FREQUENCY-SELECTIVE M/S MATRIX", s3_body, 3)
-
-    draw_arrow_down(c, arr_x, s3_y - s3_h, s3_y - s3_h - 20)
-
-    # ── Stage 4: Multiband Compressor ────────────────────────────────
-    s4_y = s3_y - s3_h - 22
-    s4_h = 350
-    s4_x = M
-    s4_w = W - 2 * M
-
-    def s4_body(c, x, y, w):
         # Crossover sub-box
         xo_h = 38
         bx, by = sub_box(c, x, y - xo_h, w, xo_h,
@@ -417,7 +337,87 @@ def page2(c):
         y -= 12
         equiv(c, x, y, "SSL G384  /  Manley Vari-Mu  /  Maselec MLA-3  (3-band)")
 
-    stage_box(c, s4_x, s4_y - s4_h, s4_w, s4_h, "MULTIBAND COMPRESSOR  (3-Band)", s4_body, 4)
+    stage_box(c, s3_x, s3_y - s3_h, s3_w, s3_h, "MULTIBAND COMPRESSOR  (3-Band)", s3_body, 3)
+
+    draw_arrow_down(c, arr_x, s3_y - s3_h, s3_y - s3_h - 20)
+
+    # ── Stage 4: Stereo Width ─────────────────────────────────────────
+    s4_y = s3_y - s3_h - 22
+    s4_h = 330
+    s4_x = M
+    s4_w = W - 2 * M
+
+    def s4_body(c, x, y, w):
+        # Crossover
+        cx_h = 48
+        bx, by = sub_box(c, x, y - cx_h, w, cx_h, "LINKWITZ-RILEY CROSSOVER  (4th-order, 200 Hz)")
+        by = text(c, bx, by, "Two cascaded 2nd-order Butterworth filters", BODY, 8)
+        by -= 2
+        equiv(c, bx, by, "Rane AC 22B active crossover")
+
+        y = y - cx_h - 6
+
+        # Split into two columns
+        col_w = (w - 20) / 2
+        left_x = x
+        right_x = x + col_w + 20
+
+        # LOW BAND label
+        c.setFillColor(ACCENT2)
+        c.setFont(BOLD, 8)
+        c.drawCentredString(left_x + col_w / 2, y - 10, "LOW BAND  (< 200 Hz)")
+        c.setFillColor(TEXT_MID)
+        c.setFont(BODY, 7.5)
+        c.drawCentredString(left_x + col_w / 2, y - 22, "Untouched \u2014 mono-safe bass")
+
+        # HIGH BAND label
+        c.setFillColor(ACCENT)
+        c.setFont(BOLD, 8)
+        c.drawCentredString(right_x + col_w / 2, y - 10, "HIGH BAND  (\u2265 200 Hz)")
+
+        y -= 30
+
+        # M/S boxes on the right
+        ms_blocks = [
+            ("M/S ENCODE", "Mid = (L + R) / 2\nSide = (L \u2212 R) / 2",
+             "Resistor summing matrix (matched 0.1% precision)"),
+            ("WIDTH CONTROL", "Mid  \u00d7  mid_scale\nSide \u00d7  side_scale",
+             "Energy-preserving: mid_scale = \u221a(2/(1+w\u00b2))   Range: 80\u2013150%"),
+            ("M/S DECODE", "L = Mid + Side\nR = Mid \u2212 Side",
+             "Resistor summing matrix"),
+        ]
+
+        for i, (name, formulas, desc) in enumerate(ms_blocks):
+            bh = 52
+            bx2, by2 = sub_box(c, right_x, y - bh, col_w, bh, name)
+            for line in formulas.split("\n"):
+                by2 = text(c, bx2, by2, line, MONO, 7.5, TEXT_MID)
+            text(c, bx2, by2, desc, BODY, 7, TEXT_MID)
+            if i < 2:
+                draw_arrow_down(c, right_x + col_w / 2, y - bh, y - bh - 10)
+            y = y - bh - 14
+
+        # Summing
+        y -= 6
+        c.setStrokeColor(ACCENT)
+        c.setLineWidth(1)
+        c.line(left_x + col_w / 2, y + 70, left_x + col_w / 2, y + 10)  # low band vertical
+        c.line(left_x + col_w / 2, y + 10, right_x + col_w / 2, y + 10)  # horizontal join
+        c.line(right_x + col_w / 2, y + 30, right_x + col_w / 2, y + 10)
+        # Plus symbol
+        cx = (left_x + col_w / 2 + right_x + col_w / 2) / 2
+        c.setFont(BOLD, 12)
+        c.setFillColor(ACCENT)
+        c.drawCentredString(cx, y + 6, "+")
+
+        draw_arrow_down(c, cx, y + 4, y - 8)
+        y -= 10
+        c.setFillColor(TEXT_MID)
+        c.setFont(BODY, 7.5)
+        c.drawCentredString(cx, y - 4, "Summing amp  (clip protection if peak > 1.0)")
+        equiv(c, x, y - 18, "Brainworx bx_control V2")
+
+    stage_box(c, s4_x, s4_y - s4_h, s4_w, s4_h, "STEREO WIDTH \u2014 FREQUENCY-SELECTIVE M/S MATRIX", s4_body, 4)
 
     draw_arrow_down(c, arr_x, s4_y - s4_h, s4_y - s4_h - 18)
     c.setFillColor(TEXT_LIGHT)
@@ -502,9 +502,9 @@ def page3(c):
     rows = [
         ("1U", "Dangerous Music Liaison", "Input gain / level matching"),
         ("2U", "Sontec MEP-250A", "HPF + 4-band parametric EQ"),
+        ("3U", "SSL G384 / Manley Vari-Mu / Maselec MLA-3", "3-band multiband compression, bypass at 0"),
         ("1U", "Rane AC 22B", "Linkwitz-Riley crossover (200 Hz)"),
         ("1U", "Brainworx bx_control V2", "M/S encode / width / decode"),
-        ("3U", "SSL G384 / Manley Vari-Mu / Maselec MLA-3", "3-band multiband compression, bypass at 0"),
         ("1U", "Dorrough 40-A + Dangerous ST", "LUFS metering + output gain trim"),
     ]
 
@@ -556,8 +556,8 @@ def page3(c):
         "Pre-Gain\nDrop\n(-18 LUFS)",
         "HPF\n15 Hz",
         "EQ\n4-Band",
-        "Stereo\nWidth\n(M/S)",
         "Multiband\nComp\n(3-Band)",
+        "Stereo\nWidth\n(M/S)",
         "LUFS\nNormalize",
         "Output",
     ]
@@ -608,7 +608,7 @@ def page3(c):
 
 def build():
     c = canvas.Canvas(OUTPUT, pagesize=letter)
-    c.setTitle("s.AI Audio Mastering Suite \u2014 Analog Signal Flow Schematic v3.5")
+    c.setTitle("s.AI Audio Mastering Suite \u2014 Analog Signal Flow Schematic v3.6")
     c.setAuthor("StudioAI")
 
     page1(c)