cleaner default filter envelope

- fixes some unexpected envelope glitches

packages/superdough/superdough.mjs

@@ -183,24 +183,24 @@ export const superdough = async (value, deadline, hapDuration) => {
     cutoff,
     lpenv,
     lpattack = 0.01,
-    lpdecay = 0.5,
-    lpsustain = 0.6,
+    lpdecay = 0.01,
+    lpsustain = 1,
     lprelease = 0.01,
     resonance = 1,
     // high pass
     hpenv,
     hcutoff,
     hpattack = 0.01,
-    hpdecay = 0.5,
-    hpsustain = 0.6,
+    hpdecay = 0.01,
+    hpsustain = 1,
     hprelease = 0.01,
     hresonance = 1,
     // band pass
     bpenv,
     bandf,
     bpattack = 0.01,
-    bpdecay = 0.5,
-    bpsustain = 0.6,
+    bpdecay = 0.01,
+    bpsustain = 1,
     bprelease = 0.01,
     bandq = 1,
     //