diff --git a/asr/sherpa_ncnn_asr.py b/asr/sherpa_ncnn_asr.py
index 2e5c257..1cc81d3 100644
--- a/asr/sherpa_ncnn_asr.py
+++ b/asr/sherpa_ncnn_asr.py
@@ -68,7 +68,7 @@ class SherpaNcnnAsr(AsrBase):
             self._notify_complete('介绍中国5000年历史文学')
             logger.info(f'_recognize_loop111')
             segment_id += 1
-            time.sleep(50)
+            time.sleep(150)
             logger.info(f'_recognize_loop222')
         logger.info(f'_recognize_loop exit')
 '''
diff --git a/tts/tts_audio_handle.py b/tts/tts_audio_handle.py
index ed35898..13ba8e4 100644
--- a/tts/tts_audio_handle.py
+++ b/tts/tts_audio_handle.py
@@ -3,7 +3,8 @@ import heapq
 import logging
 import os
 import shutil
-from threading import Lock
+import time
+from threading import Lock, Thread
 
 from eventbus import EventBus
 from utils import save_wav
@@ -62,8 +63,21 @@ class TTSAudioSplitHandle(TTSAudioHandle):
         self._lock = Lock()
         self._current = 0
         self._is_running = True
+        self._thread = Thread(target=self._process_loop)
+        self._thread.start()
         logger.info("TTSAudioSplitHandle init")
 
+    def _process_loop(self):
+        while self._is_running:
+            with self._lock:
+                if self._priority_queue and self._priority_queue[0][0] == self._current:
+                    self._current += 1
+                    chunks, txt = heapq.heappop(self._priority_queue)[1]
+                    if chunks is not None:
+                        for chunk in chunks:
+                            self.on_next_handle((chunk, txt), 0)
+            time.sleep(0.01)  # Sleep briefly to prevent busy-waiting
+
     def on_handle(self, stream, index):
         if not self._is_running:
             logger.info('TTSAudioSplitHandle::on_handle is not running')
@@ -71,13 +85,6 @@ class TTSAudioSplitHandle(TTSAudioHandle):
 
         logger.info(f'TTSAudioSplitHandle::on_handle {index}')
         s, txt = stream
-        current = 0
-        with self._lock:
-            if len(self._priority_queue) != 0:
-                current = self._priority_queue[0][0]
-                if current == 0:
-                    self._current = 0
-
         if s is None:
             heapq.heappush(self._priority_queue, (index, None))
         else:
@@ -85,7 +92,6 @@ class TTSAudioSplitHandle(TTSAudioHandle):
             idx = 0
             chunks = []
             while stream_len >= self._chunk and self._is_running:
-                # self.on_next_handle(stream[idx:idx + self._chunk], 0)
                 chunks.append(s[idx:idx + self._chunk])
                 stream_len -= self._chunk
                 idx += self._chunk
@@ -93,31 +99,14 @@ class TTSAudioSplitHandle(TTSAudioHandle):
                 return
             heapq.heappush(self._priority_queue, (index, (chunks, txt)))
 
-        logger.info(f'TTSAudioSplitHandle::on_handle {index}, {current}, {self._current}, {len(self._priority_queue)}')
-        if current == self._current:
-            self._current = self._current + 1
-            chunks = heapq.heappop(self._priority_queue)[1]
-            chunks, txt = chunks
-
-            if chunks is not None:
-                for chunk in chunks:
-                    # logger.info(f'TTSAudioSplitHandle::on_handle push')
-                    self.on_next_handle((chunk, txt), 0)
-                    # logger.info(f'TTSAudioSplitHandle::on_handle push finish')
-
     def stop(self):
         self._is_running = False
+        self._thread.join()
 
     def on_clear_cache(self, *args, **kwargs):
         super().on_clear_cache()
-        if self._priority_queue is None or len(self._priority_queue) == 0:
-            return
-
         with self._lock:
-            print('TTSAudioSplitHandle::on_clear_cache', self._current)
             self._current = 0
-            print('TTSAudioSplitHandle::on_clear_cache', self._current)
-
         self._priority_queue.clear()
 
 
diff --git a/utils/async_task_queue.py b/utils/async_task_queue.py
index c796b41..4a4b726 100644
--- a/utils/async_task_queue.py
+++ b/utils/async_task_queue.py
@@ -59,4 +59,3 @@ class AsyncTaskQueue:
         self.stop_workers()
         for thread in self._threads:
             thread.join()
-            
\ No newline at end of file