diff --git a/desktop.nix b/desktop.nix
index 0ece904..48cc0f0 100644
--- a/desktop.nix
+++ b/desktop.nix
@@ -3,61 +3,9 @@ with lib;
 let
   cfg = config.aviallon.desktop;
   generalCfg = config.aviallon.general;
-  filterConfig = pkgs.writeText "pipewire-noise-filter.cfg"  ''
-# Noise canceling source
-#
-# start with pipewire -c filter-chain/source-rnnoise.conf
-#
-context.properties = {
-    log.level        = 0
-}
-
-context.spa-libs = {
-    audio.convert.* = audioconvert/libspa-audioconvert
-    support.*       = support/libspa-support
-}
-
-context.modules = [
-    {   name = libpipewire-module-rtkit
-        args = {
-            #nice.level   = -11
-            #rt.prio      = 88
-            #rt.time.soft = 200000
-            #rt.time.hard = 200000
-        }
-        flags = [ ifexists nofail ]
-    }
-    {   name = libpipewire-module-protocol-native }
-    {   name = libpipewire-module-client-node }
-    {   name = libpipewire-module-adapter }
-
-    {   name = libpipewire-module-filter-chain
-        args = {
-            node.name =  "rnnoise_source"
-            node.description =  "Noise Canceling source"
-            media.name =  "Noise Canceling source"
-            filter.graph = {
-                nodes = [
-                    {
-                        type = ladspa
-                        name = rnnoise
-                        plugin = ${pkgs.rnnoise-plugin}/lib/ladspa/librnnoise_ladspa.so
-                        label = noise_suppressor_stereo
-                        control = {
-                            "VAD Threshold (%)" ${toString cfg.audio.noise-filter.strength}
-                        }
-                    }
-                ]
-            }
-            capture.props = {
-                node.passive = true
-            }
-            playback.props = {
-                media.class = Audio/Source
-            }
-        }
-    }
-]'';
+  filterConfig = pkgs.callPackage ./packages/pipewire-noise-filter.cfg.nix {
+    noiseFilterStrength = cfg.audio.noise-filter.strength;
+  };
 in {
   options.aviallon.desktop = {
     enable = mkOption {
diff --git a/packages/pipewire-noise-filter.cfg.nix b/packages/pipewire-noise-filter.cfg.nix
new file mode 100644
index 0000000..eceb6e7
--- /dev/null
+++ b/packages/pipewire-noise-filter.cfg.nix
@@ -0,0 +1,61 @@
+{ lib
+, writeText
+, rnnoise-plugin
+, noiseFilterStrength
+}:
+
+writeText "pipewire-noise-filter.cfg"  ''
+# Noise canceling source
+#
+# start with pipewire -c filter-chain/source-rnnoise.conf
+#
+context.properties = {
+    log.level        = 0
+}
+
+context.spa-libs = {
+    audio.convert.* = audioconvert/libspa-audioconvert
+    support.*       = support/libspa-support
+}
+
+context.modules = [
+    {   name = libpipewire-module-rtkit
+        args = {
+            #nice.level   = -11
+            #rt.prio      = 88
+            #rt.time.soft = 200000
+            #rt.time.hard = 200000
+        }
+        flags = [ ifexists nofail ]
+    }
+    {   name = libpipewire-module-protocol-native }
+    {   name = libpipewire-module-client-node }
+    {   name = libpipewire-module-adapter }
+
+    {   name = libpipewire-module-filter-chain
+        args = {
+            node.name =  "rnnoise_source"
+            node.description =  "Noise Canceling source"
+            media.name =  "Noise Canceling source"
+            filter.graph = {
+                nodes = [
+                    {
+                        type = ladspa
+                        name = rnnoise
+                        plugin = ${rnnoise-plugin}/lib/ladspa/librnnoise_ladspa.so
+                        label = noise_suppressor_stereo
+                        control = {
+                            "VAD Threshold (%)" ${toString noiseFilterStrength}
+                        }
+                    }
+                ]
+            }
+            capture.props = {
+                node.passive = true
+            }
+            playback.props = {
+                media.class = Audio/Source
+            }
+        }
+    }
+]''