diff --git a/src/Notifier.ts b/src/Notifier.ts
index dd624e2dc7..7e1f9eb0a4 100644
--- a/src/Notifier.ts
+++ b/src/Notifier.ts
@@ -50,6 +50,7 @@ import { localNotificationsAreSilenced, createLocalNotificationSettingsIfNeeded
 import { getIncomingCallToastKey, IncomingCallToast } from "./toasts/IncomingCallToast";
 import ToastStore from "./stores/ToastStore";
 import { ElementCall } from "./models/Call";
+import { VoiceBroadcastChunkEventType } from "./voice-broadcast";
 
 /*
  * Dispatches:
@@ -77,6 +78,13 @@ const msgTypeHandlers = {
     [M_LOCATION.altName]: (event: MatrixEvent) => {
         return TextForEvent.textForLocationEvent(event)();
     },
+    [MsgType.Audio]: (event: MatrixEvent): string | null => {
+        if (event.getContent()?.[VoiceBroadcastChunkEventType]) {
+            // mute broadcast chunks
+            return null;
+        }
+        return TextForEvent.textForEvent(event);
+    },
 };
 
 export const Notifier = {
diff --git a/test/Notifier-test.ts b/test/Notifier-test.ts
index bfa1e1d1f3..a3b1f9b2db 100644
--- a/test/Notifier-test.ts
+++ b/test/Notifier-test.ts
@@ -20,6 +20,7 @@ import { Room, RoomEvent } from "matrix-js-sdk/src/models/room";
 import { IContent, MatrixEvent } from "matrix-js-sdk/src/models/event";
 import { SyncState } from "matrix-js-sdk/src/sync";
 import { waitFor } from "@testing-library/react";
+import { EventType, MsgType } from "matrix-js-sdk/src/matrix";
 
 import BasePlatform from "../src/BasePlatform";
 import { ElementCall } from "../src/models/Call";
@@ -39,6 +40,7 @@ import { mkThread } from "./test-utils/threads";
 import dis from "../src/dispatcher/dispatcher";
 import { ThreadPayload } from "../src/dispatcher/payloads/ThreadPayload";
 import { Action } from "../src/dispatcher/actions";
+import { VoiceBroadcastChunkEventType } from "../src/voice-broadcast";
 
 jest.mock("../src/utils/notifications", () => ({
     // @ts-ignore
@@ -73,6 +75,22 @@ describe("Notifier", () => {
         });
     };
 
+    const mkAudioEvent = (broadcastChunk = false): MatrixEvent => {
+        const chunkContent = broadcastChunk ? { [VoiceBroadcastChunkEventType]: {} } : {};
+
+        return mkEvent({
+            event: true,
+            type: EventType.RoomMessage,
+            user: "@user:example.com",
+            room: "!room:example.com",
+            content: {
+                ...chunkContent,
+                msgtype: MsgType.Audio,
+                body: "test audio message",
+            },
+        });
+    };
+
     beforeEach(() => {
         accountDataStore = {};
         mockClient = getMockClientWithEventEmitter({
@@ -94,11 +112,11 @@ describe("Notifier", () => {
         });
 
         mockClient.pushRules = {
-            global: undefined,
+            global: {},
         };
-        accountDataEventKey = getLocalNotificationAccountDataEventType(mockClient.deviceId);
+        accountDataEventKey = getLocalNotificationAccountDataEventType(mockClient.deviceId!);
 
-        testRoom = new Room(roomId, mockClient, mockClient.getUserId());
+        testRoom = new Room(roomId, mockClient, mockClient.getSafeUserId());
 
         MockPlatform = mockPlatformPeg({
             supportsNotifications: jest.fn().mockReturnValue(true),
@@ -109,8 +127,10 @@ describe("Notifier", () => {
 
         Notifier.isBodyEnabled = jest.fn().mockReturnValue(true);
 
-        mockClient.getRoom.mockImplementation((id) => {
-            return id === roomId ? testRoom : new Room(id, mockClient, mockClient.getUserId());
+        mockClient.getRoom.mockImplementation((id: string | undefined): Room | null => {
+            if (id === roomId) return testRoom;
+            if (id) return new Room(id, mockClient, mockClient.getSafeUserId());
+            return null;
         });
     });
 
@@ -256,6 +276,24 @@ describe("Notifier", () => {
             Notifier._displayPopupNotification(testEvent, testRoom);
             expect(MockPlatform.displayNotification).toHaveBeenCalledTimes(count);
         });
+
+        it("should display a notification for a voice message", () => {
+            const audioEvent = mkAudioEvent();
+            Notifier._displayPopupNotification(audioEvent, testRoom);
+            expect(MockPlatform.displayNotification).toHaveBeenCalledWith(
+                "@user:example.com (!room1:server)",
+                "@user:example.com: test audio message",
+                "data:image/png;base64,00",
+                testRoom,
+                audioEvent,
+            );
+        });
+
+        it("should not display a notification for a broadcast chunk", () => {
+            const audioEvent = mkAudioEvent(true);
+            Notifier._displayPopupNotification(audioEvent, testRoom);
+            expect(MockPlatform.displayNotification).not.toHaveBeenCalled();
+        });
     });
 
     describe("getSoundForRoom", () => {
@@ -448,7 +486,7 @@ describe("Notifier", () => {
 
             dis.dispatch<ThreadPayload>({
                 action: Action.ViewThread,
-                thread_id: rootEvent.getId(),
+                thread_id: rootEvent.getId()!,
             });
 
             await waitFor(() => expect(SdkContextClass.instance.roomViewStore.getThreadId()).toBe(rootEvent.getId()));
@@ -456,6 +494,11 @@ describe("Notifier", () => {
             Notifier._evaluateEvent(events[1]);
             expect(Notifier._displayPopupNotification).toHaveBeenCalledTimes(1);
         });
+
+        it("should show a pop-up for an audio message", () => {
+            Notifier._evaluateEvent(mkAudioEvent());
+            expect(Notifier._displayPopupNotification).toHaveBeenCalledTimes(1);
+        });
     });
 
     describe("setPromptHidden", () => {
diff --git a/test/test-utils/client.ts b/test/test-utils/client.ts
index 47e037b8fd..47040dcb4b 100644
--- a/test/test-utils/client.ts
+++ b/test/test-utils/client.ts
@@ -92,6 +92,7 @@ export const unmockClientPeg = () => jest.spyOn(MatrixClientPeg, "get").mockRest
  */
 export const mockClientMethodsUser = (userId = "@alice:domain") => ({
     getUserId: jest.fn().mockReturnValue(userId),
+    getSafeUserId: jest.fn().mockReturnValue(userId),
     getUser: jest.fn().mockReturnValue(new User(userId)),
     isGuest: jest.fn().mockReturnValue(false),
     mxcUrlToHttp: jest.fn().mockReturnValue("mock-mxcUrlToHttp"),