feat: noise gate implementation

src/settings/settings.ts

@@ -129,6 +129,22 @@ export const alwaysShowIphoneEarpiece = new Setting<boolean>(
   false,
 );
 
+export const noiseGateEnabled = new Setting<boolean>(
+  "noise-gate-enabled",
+  false,
+);
+// Threshold in dBFS — gate opens above this, closes below it
+export const noiseGateThreshold = new Setting<number>(
+  "noise-gate-threshold",
+  -60,
+);
+// Time in ms for the gate to fully open after signal exceeds threshold
+export const noiseGateAttack = new Setting<number>("noise-gate-attack", 25);
+// Time in ms the gate stays open after signal drops below threshold
+export const noiseGateHold = new Setting<number>("noise-gate-hold", 200);
+// Time in ms for the gate to fully close after hold expires
+export const noiseGateRelease = new Setting<number>("noise-gate-release", 150);
+
 export enum MatrixRTCMode {
   Legacy = "legacy",
   Compatibility = "compatibility",