Audio improvements

modules/audio.nix

@@ -21,4 +21,40 @@
        "default.clock.max-quantum" = 1024;
      };
    };
+
+  # DeepFilterNet noise reduction filter chain
+  services.pipewire.extraConfig.pipewire."99-deepfilter-source" = {
+    "context.modules" = [
+      {
+        name = "libpipewire-module-filter-chain";
+        args = {
+          "node.description" = "DeepFilter Noise Canceling Source";
+          "media.name" = "DeepFilter Noise Canceling Source";
+          "filter.graph" = {
+            nodes = [
+              {
+                type = "ladspa";
+                name = "deepfilter";
+                plugin = "${pkgs.deepfilternet}/lib/ladspa/libdeep_filter_ladspa.so";
+                label = "deep_filter_mono";
+                control = {
+                  "Attenuation Limit (dB)" = 100;
+                };
+              }
+            ];
+          };
+          "audio.rate" = 48000;
+          "audio.position" = [ "MONO" ];
+          "capture.props" = {
+            "node.name" = "effect_input.deepfilter";
+            "node.passive" = true;
+          };
+          "playback.props" = {
+            "node.name" = "effect_output.deepfilter";
+            "media.class" = "Audio/Source";
+          };
+        };
+      }
+    ];
+  };
 }

modules/packages.nix

@@ -34,6 +34,7 @@
       ghostty
       neofetch
       deepfilternet
+      pavucontrol
 
       # Desktop applications
       bitwarden-desktop