Merge branch 'muzi' of http://59.110.91.129:3000/zhangmengying/AIClass into wanzi

src/components/ai/voice/VoiceInput2.vue

@@ -358,7 +358,8 @@ const toggleSpeechInput = async () => {
       mediaStream.value = stream
 
       // 使用Web Audio API捕获音频并转换为PCM格式
-      audioContext.value = new (window.AudioContext || window.webkitAudioContext)({ sampleRate: 16000 })
+      // 不指定采样率，使用默认值，确保与媒体流兼容
+      audioContext.value = new (window.AudioContext || window.webkitAudioContext)()
       mediaStreamSource.value = audioContext.value.createMediaStreamSource(stream)
       
       // 尝试使用AudioWorkletNode（现代浏览器推荐），如果不支持则回退到ScriptProcessorNode