Update main.ts

main.ts

@@ -22,23 +22,23 @@ async function synthesizeSpeech(model: string, voice: string, text: string) {
 
   if (model.includes("tts")) {
     rate = 0.1;
-    pitch = 0.2;
+    pitch = -0.1;
 
     switch (voice) {
       case "alloy":
-        voiceName = "zh-CN-YunjianNeural";
+        voiceName = "zh-CN-XiaoyiNeural";
         break;
       case "echo":
-        voiceName = "zh-CN-YunyangNeural";
+        voiceName = "zh-CN-XiaoxiaoNeural";
         break;
       case "fable":
-        voiceName = "zh-CN-XiaoxiaoNeural";
+        voiceName = "zh-CN-YunxiaNeural";
         break;
       case "onyx":
-        voiceName = "zh-TW-HsiaoChenNeural";
+        voiceName = "zh-TW-YunyangNeural";
         break;
       default:
-        voiceName = "zh-CN-YunxiNeural";
+        voiceName = "zh-CN-XiaoyiNeural";
         break;
     }
   } else {