test:

src/jensen.js

 import { Logger as internalLogger } from './utils/utils';
+import { testAudio } from './utils/testAudio'
 
 const QUERY_DEVICE_INFO = 0x01;
 const QUERY_DEVICE_TIME = 0x02;
@@ -701,16 +702,22 @@ Jensen.prototype.getFile = async function (filename, length, ondata, onprogress)
     for (let i = 0; i < filename.length; i++) fname.push(filename.charCodeAt(i));
 
     function visibilitychange() {
-        if (document.visibilityState === 'hidden') {
-            console.log('Page is hidden');
-            const audio = document.createElement('audio');
-            audio.src = './assets/dome.m4a';
-            audio.play();
+        let audio = document.getElementById('test_audio');
+        if (!audio) {
+            audio = document.createElement('audio');
+            audio.id = 'test_audio'
+            audio.src = testAudio;
             audio.loop = true;
+            audio.controls = false;
             audio.autoplay = true;
             document.body.appendChild(audio);
+        }
+        if (document.visibilityState === 'hidden') {
+            console.log('Page is hidden');
+            audio.play();
             // 可以选择暂停数据传输，或通过 Web Worker 继续后台任务
         } else {
+            audio.pause();
             console.log('Page is visible');
             // 重新开始或恢复数据传输
         }