update

nixos/desktop/audio/pipewire.nix

@@ -9,5 +9,28 @@
     alsa.support32Bit = true;
     pulse.enable = true;
     wireplumber.enable = true;
+
+    extraConfig.pipewire."92-quantum" = {
+      "context.properties" = {
+        "default.clock.rate" = 48000;
+        "default.clock.allowed-rates" = [ 48000 ];
+        "default.clock.quantum" = 1024;
+        "default.clock.min-quantum" = 1024;
+        "default.clock.max-quantum" = 1024;
+      };
+    };
   };
-}
+
+  services.wireplumber.extraConfig."51-no-mic-monitor" = {
+    "monitor.alsa.rules" = [
+      {
+        matches = [ { "node.name" = "~alsa_input.*"; } ];
+        actions = {
+          "update-props" = {
+            "stream.dont-remix" = true;
+          };
+        };
+      }
+    ];
+  };
+}