From 24a6ce5295f15369e22b0ea8823cfd76dc04312d Mon Sep 17 00:00:00 2001
From: cfy666 <3087823110@qq.com>
Date: Sun, 14 Jun 2026 12:01:34 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E4=BF=AE=E5=A4=8D=E6=96=B0=E6=97=A7=20T?=
 =?UTF-8?q?TS=20=E8=AF=AD=E9=9F=B3=E9=87=8D=E5=8F=A0=E6=92=AD=E6=94=BE?=
 =?UTF-8?q?=E7=9A=84=E9=97=AE=E9=A2=98?=
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- TTSPlayer 新增 stopCurrentAudio() 方法，play() 开始前先停止旧音频
- onSpeechEnd 发送新 query 前停止上一轮 TTS 播放
---
 frontend/src/hooks/useVisionSession.ts |  4 ++++
 frontend/src/lib/ttsPlayer.ts          | 16 ++++++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/frontend/src/hooks/useVisionSession.ts b/frontend/src/hooks/useVisionSession.ts
index 0bdab7c..a2ba760 100644
--- a/frontend/src/hooks/useVisionSession.ts
+++ b/frontend/src/hooks/useVisionSession.ts
@@ -158,6 +158,10 @@ export function useVisionSession() {
           return;
         }
 
+        // 停止上一轮的 TTS 播放，防止新旧音频重叠
+        ttsPlayerRef.current?.stop();
+        setIsAudioPlaying(false);
+
         const frame = captureFrame();
         if (!frame) {
           console.warn("[Session] 无法捕获图像帧");
diff --git a/frontend/src/lib/ttsPlayer.ts b/frontend/src/lib/ttsPlayer.ts
index a7f283f..3228b12 100644
--- a/frontend/src/lib/ttsPlayer.ts
+++ b/frontend/src/lib/ttsPlayer.ts
@@ -47,6 +47,19 @@ export class TTSPlayer {
     this._isPlaying = false;
   }
 
+  /**
+   * 停止当前正在播放的音频（不清空 chunks）
+   * 用于 play() 开始前，防止新旧音频重叠
+   */
+  private stopCurrentAudio(): void {
+    if (this.audio) {
+      this.audio.pause();
+      this.audio.removeAttribute("src");
+      this.audio = null;
+    }
+    this._isPlaying = false;
+  }
+
   /** 暂停播放 */
   pause(): void {
     this.audio?.pause();
@@ -61,6 +74,9 @@ export class TTSPlayer {
   private play(mimeType: string): void {
     if (this.chunks.length === 0) return;
 
+    // 停止当前正在播放的音频，防止重叠
+    this.stopCurrentAudio();
+
     // 拼接所有 Base64 片段
     const combined = this.chunks.join("");
     this.chunks = [];