diff --git a/src/app.ts b/src/app.ts
index e93a2d2..9446b4c 100644
--- a/src/app.ts
+++ b/src/app.ts
@@ -16,10 +16,11 @@ import {
 import {
   checkChromiumExecutable,
   logger,
-  randomActivateAudio,
   registerExitHandler,
   resolvePackagePath,
   sleep,
+  startRandomActivateAudio,
+  stopRandomActivateAudio,
   stopUpdateSystemStats,
 } from './utils'
 import { calculateVmafScore } from './vmaf'
@@ -99,7 +100,7 @@ export async function setupApplication(
   // Start the local sessions.
   if ((config.url || config.customUrlHandler) && config.sessions) {
     if (config.randomAudioPeriod) {
-      await randomActivateAudio(
+      startRandomActivateAudio(
         stats.sessions,
         config.randomAudioPeriod,
         config.randomAudioProbability,
@@ -131,6 +132,8 @@ export async function setupApplication(
   return async (): Promise<void> => {
     log.debug('Stopping')
 
+    stopRandomActivateAudio()
+
     if (server) {
       server.stop()
     }
diff --git a/src/utils.ts b/src/utils.ts
index e830ce1..c06fe56 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -223,6 +223,28 @@ declare global {
 }
 
 let randomActivateAudioTimeoutId: NodeJS.Timeout | null = null
+let randomActivateAudioRunning = false
+
+export function startRandomActivateAudio(
+  sessions: Map<number, Session>,
+  randomAudioPeriod: number,
+  randomAudioProbability: number,
+  randomAudioRange: number,
+): void {
+  if (randomActivateAudioRunning) return
+  randomActivateAudioRunning = true
+  void randomActivateAudio(
+    sessions,
+    randomAudioPeriod,
+    randomAudioProbability,
+    randomAudioRange,
+  )
+}
+
+export function stopRandomActivateAudio(): void {
+  randomActivateAudioRunning = false
+  randomActivateAudioTimeoutId && clearTimeout(randomActivateAudioTimeoutId)
+}
 
 /**
  * Randomly activate audio from one tab at time.
@@ -237,7 +259,7 @@ export async function randomActivateAudio(
   randomAudioProbability: number,
   randomAudioRange: number,
 ): Promise<void> {
-  if (!randomAudioPeriod) {
+  if (!randomAudioPeriod || !randomActivateAudioRunning) {
     return
   }
   try {
@@ -620,8 +642,8 @@ export async function resolveIP(
             return ip
           }
         })
-        .catch(err => {
-          log.error(`resolveIP error: ${(err as Error).stack}`)
+        .catch(_err => {
+          // log.error(`resolveIP error: ${(err as Error).stack}`)
           ipCache.set(ip, { host: ip, timestamp })
         }),
     ])