diff --git a/demo/ac_sound_capture1/ac_sound_capture1.cpp b/demo/ac_sound_capture1/ac_sound_capture1.cpp
index 4fb3bc0..48fd5bd 100644
--- a/demo/ac_sound_capture1/ac_sound_capture1.cpp
+++ b/demo/ac_sound_capture1/ac_sound_capture1.cpp
@@ -156,7 +156,7 @@ void sound_capture_callback(int32_t* voicedata, uint32_t len) {
     voicedata[i] = voicedata[i] << 8; //底层采集的数据是24位，左移8位转换成32位
   }
 
-  wavWriteVoice("record.wav", 96000, 32, 1, (char*)voicedata, len * sizeof(int32_t));
+  wavWriteVoice("record.wav", 64000, 32, 1, (char*)voicedata, len * sizeof(int32_t));
 }
 
 int main(int argc, char const* argv[]) {