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docs/eq_stereo.md

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+# EQ & Stereo
+
+Shape the frequency balance and stereo image of your sounds.
+
+## Three-Band EQ
+
+```forth
+"mix" s
+  3 eqlo    ( boost low shelf by 3dB )
+  -2 eqmid  ( cut mids by 2dB )
+  1 eqhi    ( boost high shelf by 1dB )
+.
+```
+
+## Tilt EQ
+
+A simple one-knob EQ that tilts the frequency balance:
+
+```forth
+"bright" s 0.5 tilt .   ( brighter )
+"dark" s -0.5 tilt .    ( darker )
+```
+
+Range: -1 (dark) to 1 (bright)
+
+## Gain and Pan
+
+```forth
+"kick" s 0.8 gain .     ( volume 0-1 )
+"hat" s 0.5 pan .       ( pan right )
+"hat" s -0.5 pan .      ( pan left )
+"snare" s 1.2 postgain . ( post-processing gain )
+"lead" s 100 velocity . ( velocity/dynamics )
+```
+
+## Stereo Width
+
+```forth
+"pad" s 0 width .    ( mono )
+"pad" s 1 width .    ( normal stereo )
+"pad" s 2 width .    ( extra wide )
+```
+
+## Haas Effect
+
+Create spatial positioning with subtle delay between channels:
+
+```forth
+"vocal" s 8 haas .  ( 8ms delay for spatial effect )
+```
+
+## Words
+
+| Word | Stack | Description |
+|------|-------|-------------|
+| `eqlo` | (f --) | Set low shelf gain (dB) |
+| `eqmid` | (f --) | Set mid peak gain (dB) |
+| `eqhi` | (f --) | Set high shelf gain (dB) |
+| `tilt` | (f --) | Set tilt EQ (-1 dark, 1 bright) |
+| `gain` | (f --) | Set volume (0-1) |
+| `postgain` | (f --) | Set post gain |
+| `velocity` | (f --) | Set velocity |
+| `pan` | (f --) | Set pan (-1 to 1) |
+| `width` | (f --) | Set stereo width |
+| `haas` | (f --) | Set Haas delay (ms) |