diff --git a/packages/core/controls.mjs b/packages/core/controls.mjs
index 79dc33ab..2e8d40f7 100644
--- a/packages/core/controls.mjs
+++ b/packages/core/controls.mjs
@@ -553,7 +553,7 @@ export const { cutoff, ctf, lpf, lp } = registerControl(['cutoff', 'resonance',
  * @example
  * note("c2 e2 f2 g2")
  * .sound('sawtooth')
- * .lpf(500)
+ * .lpf(300)
  * .lpa(.5)
  * .lpenv("<4 2 1 0 -1 -2 -4>/4")
  */
@@ -592,7 +592,7 @@ export const { bpenv, bpe } = registerControl('bpenv', 'bpe');
  * @example
  * note("c2 e2 f2 g2")
  * .sound('sawtooth')
- * .lpf(500)
+ * .lpf(300)
  * .lpa("<.5 .25 .1 .01>/4")
  * .lpenv(4)
  */
@@ -631,9 +631,8 @@ export const { bpattack, bpa } = registerControl('bpattack', 'bpa');
  * @example
  * note("c2 e2 f2 g2")
  * .sound('sawtooth')
- * .lpf(500)
+ * .lpf(300)
  * .lpd("<.5 .25 .1 0>/4")
- * .lps(0.2)
  * .lpenv(4)
  */
 export const { lpdecay, lpd } = registerControl('lpdecay', 'lpd');
@@ -673,7 +672,7 @@ export const { bpdecay, bpd } = registerControl('bpdecay', 'bpd');
  * @example
  * note("c2 e2 f2 g2")
  * .sound('sawtooth')
- * .lpf(500)
+ * .lpf(300)
  * .lpd(.5)
  * .lps("<0 .25 .5 1>/4")
  * .lpenv(4)
@@ -716,7 +715,7 @@ export const { bpsustain, bps } = registerControl('bpsustain', 'bps');
  * note("c2 e2 f2 g2")
  * .sound('sawtooth')
  * .clip(.5)
- * .lpf(500)
+ * .lpf(300)
  * .lpenv(4)
  * .lpr("<.5 .25 .1 0>/4")
  * .release(.5)
diff --git a/website/src/pages/learn/effects.mdx b/website/src/pages/learn/effects.mdx
index 03ef6ef3..39f52e9f 100644
--- a/website/src/pages/learn/effects.mdx
+++ b/website/src/pages/learn/effects.mdx
@@ -94,7 +94,7 @@ Each filter can receive an additional filter envelope controlling the cutoff val
   client:idle
   tune={`note("[c eb g <f bb>](3,8,<0 1>)".sub(12))
   .s("<sawtooth>/64")
-  .lpf(sine.range(500,3000).slow(16))
+  .lpf(sine.range(300,2000).slow(16))
   .lpa(0.005)
   .lpd(perlin.range(.02,.2))
   .lps(perlin.range(0,.5).slow(3))
@@ -106,7 +106,7 @@ Each filter can receive an additional filter envelope controlling the cutoff val
   .juxBy(.5,rev)
   .sometimes(add(note(12)))
   .stack(s("bd*2").bank('RolandTR909'))
-  .gain(.5)`}
+  .gain(.5).fast(2)`}
 />
 
 There is one filter envelope for each filter type and thus one set of envelope filter parameters preceded either by `lp`, `hp` or `bp`:
diff --git a/website/src/pages/recipes/recipes.mdx b/website/src/pages/recipes/recipes.mdx
index 057743cb..dd195443 100644
--- a/website/src/pages/recipes/recipes.mdx
+++ b/website/src/pages/recipes/recipes.mdx
@@ -308,7 +308,7 @@ Running through different wavetables can also give interesting variations:
 <MiniRepl
   client:visible
   tune={`samples('github:bubobubobubobubo/dough-waveforms')
-note("c2*8").s("wt_dbass").n(run(8))`}
+note("c2*8").s("wt_dbass").n(run(8)).fast(2)`}
 />
 
 ...adding a filter envelope + reverb:
@@ -317,6 +317,6 @@ note("c2*8").s("wt_dbass").n(run(8))`}
   client:visible
   tune={`samples('github:bubobubobubobubo/dough-waveforms')
 note("c2*8").s("wt_dbass").n(run(8))
-.lpf(perlin.range(200,2000).slow(8))
-.lpenv(-3).lpa(.1).room(.5)`}
+.lpf(perlin.range(100,1000).slow(8))
+.lpenv(-3).lpa(.1).room(.5).fast(2)`}
 />