From dc67863cbcab95476120bf2ebf9116385a46ee50 Mon Sep 17 00:00:00 2001
From: Valere Fedronic <bill.carson@valrsoft.com>
Date: Thu, 4 Dec 2025 15:59:48 +0100
Subject: [PATCH] call: Pass the echo cancellation and noise suppression
 settings to EC (#31317)

---
 src/models/Call.ts                  | 11 ++++
 test/unit-tests/models/Call-test.ts | 90 +++++++++++++++++++++++++++++
 2 files changed, 101 insertions(+)

diff --git a/src/models/Call.ts b/src/models/Call.ts
index 1882eec964..ebf3f7b50a 100644
--- a/src/models/Call.ts
+++ b/src/models/Call.ts
@@ -744,6 +744,17 @@ export class ElementCall extends Call {
             params.append("allowIceFallback", "true");
         }
 
+        const echoCancellation = SettingsStore.getValue("webrtc_audio_echoCancellation");
+        if (!echoCancellation) {
+            // the default is true, so only set if false
+            params.append("echoCancellation", "false");
+        }
+        const noiseSuppression = SettingsStore.getValue("webrtc_audio_noiseSuppression");
+        if (!noiseSuppression) {
+            // the default is true, so only set if false
+            params.append("noiseSuppression", "false");
+        }
+
         // Set custom fonts
         if (SettingsStore.getValue("useSystemFont")) {
             SettingsStore.getValue("systemFont")
diff --git a/test/unit-tests/models/Call-test.ts b/test/unit-tests/models/Call-test.ts
index dbf2dca974..9e2233d759 100644
--- a/test/unit-tests/models/Call-test.ts
+++ b/test/unit-tests/models/Call-test.ts
@@ -567,6 +567,96 @@ describe("ElementCall", () => {
             SettingsStore.getValue = originalGetValue;
         });
 
+        describe("Echo cancellation & Noise Suppression", () => {
+            it("passes echo cancellation settings through widget URL if needed", async () => {
+                const originalGetValue = SettingsStore.getValue;
+                SettingsStore.getValue = (
+                    name: SettingKey,
+                    roomId: string | null = null,
+                    excludeDefault = false,
+                ): any => {
+                    switch (name) {
+                        case "webrtc_audio_echoCancellation":
+                            return false;
+                    }
+                };
+                ElementCall.create(room);
+                const call = Call.get(room);
+                if (!(call instanceof ElementCall)) throw new Error("Failed to create call");
+
+                const urlParams = new URLSearchParams(new URL(call.widget.url).hash.slice(1));
+                expect(urlParams.get("echoCancellation")).toBe("false");
+
+                SettingsStore.getValue = originalGetValue;
+            });
+
+            it("does not pass echo cancellation settings through widget URL if not needed", async () => {
+                const originalGetValue = SettingsStore.getValue;
+                SettingsStore.getValue = (
+                    name: SettingKey,
+                    roomId: string | null = null,
+                    excludeDefault = false,
+                ): any => {
+                    switch (name) {
+                        case "webrtc_audio_echoCancellation":
+                            return true;
+                    }
+                };
+                ElementCall.create(room);
+                const call = Call.get(room);
+                if (!(call instanceof ElementCall)) throw new Error("Failed to create call");
+
+                const urlParams = new URLSearchParams(new URL(call.widget.url).hash.slice(1));
+                expect(urlParams.get("echoCancellation")).toBeNull();
+
+                SettingsStore.getValue = originalGetValue;
+            });
+
+            it("passes noise suppression settings through widget URL if needed", async () => {
+                const originalGetValue = SettingsStore.getValue;
+                SettingsStore.getValue = (
+                    name: SettingKey,
+                    roomId: string | null = null,
+                    excludeDefault = false,
+                ): any => {
+                    switch (name) {
+                        case "webrtc_audio_noiseSuppression":
+                            return false;
+                    }
+                };
+                ElementCall.create(room);
+                const call = Call.get(room);
+                if (!(call instanceof ElementCall)) throw new Error("Failed to create call");
+
+                const urlParams = new URLSearchParams(new URL(call.widget.url).hash.slice(1));
+                expect(urlParams.get("noiseSuppression")).toBe("false");
+
+                SettingsStore.getValue = originalGetValue;
+            });
+
+            it("does not pass noise suppression settings through widget URL if not needed", async () => {
+                const originalGetValue = SettingsStore.getValue;
+                SettingsStore.getValue = (
+                    name: SettingKey,
+                    roomId: string | null = null,
+                    excludeDefault = false,
+                ): any => {
+                    switch (name) {
+                        case "webrtc_audio_noiseSuppression":
+                            return true;
+                    }
+                };
+                ElementCall.create(room);
+                const call = Call.get(room);
+                if (!(call instanceof ElementCall)) throw new Error("Failed to create call");
+
+                const urlParams = new URLSearchParams(new URL(call.widget.url).hash.slice(1));
+                expect(urlParams.get("noiseSuppression")).toBeNull();
+
+                SettingsStore.getValue = originalGetValue;
+            });
+        });
+
         it("passes ICE fallback preference through widget URL", async () => {
             // Test with the preference set to false
             ElementCall.create(room);