diff --git a/User/audio/audio_flac.c b/User/audio/audio_flac.c
index 0248f07..b52a484 100644
--- a/User/audio/audio_flac.c
+++ b/User/audio/audio_flac.c
@@ -6,7 +6,10 @@
 #include "elog.h"
 #include "heap.h"
 
+#define DR_FLAC_NO_STDIO
+#define DR_FLAC_NO_OGG
 #define DR_FLAC_IMPLEMENTATION
+#define DR_FLAC_BUFFER_SIZE 16384
 #include "dr_flac.h"
 
 const static char *TAG = "audio_flac";
@@ -18,7 +21,7 @@ static size_t flac_read(void* pUserData, void* pBufferOut, size_t bytesToRead)
   UINT br;
   FRESULT f_result = f_read(pUserData, pBufferOut, bytesToRead, &br); //从文件中读取新的内容
 
-  elog_verbose(TAG, "flac_read: reading %d bytes, %d bytes read", bytesToRead, br);
+  // elog_verbose(TAG, "flac_read: reading %d bytes, %d bytes read", bytesToRead, br);
 
   if (f_result != FR_OK) {
     elog_error(TAG, "file read error");
@@ -118,23 +121,25 @@ void music_flac_play(const char *file_name)
   }
 
   /* 初始化SAI */
-  uint32_t frame_pcm_size = pFlac->maxBlockSizeInPCMFrames * pFlac->channels;
-  audio_hal_start(frame_pcm_size, pFlac->bitsPerSample / 8);
+  uint32_t pcm_sample_count = pFlac->maxBlockSizeInPCMFrames * pFlac->channels; //每一个PCM块的采样数量
+  audio_hal_start(pcm_sample_count, pFlac->bitsPerSample / 8);
 
-  elog_info(TAG, "start playing");
+  elog_info(TAG, "music_flac_play: maxBlockSizeInPCMFrames=%d, channels=%d, bitsPerSample=%d",
+                 pFlac->maxBlockSizeInPCMFrames, pFlac->channels, pFlac->bitsPerSample);
 
   while(1) {
-    /* 解码新一帧FLAC数据 */
-    drflac_int16 *sample = malloc(frame_pcm_size * (pFlac->bitsPerSample / 8));
+    drflac_int16 *sample = malloc(pcm_sample_count * (pFlac->bitsPerSample / 8));
     if (sample == NULL) {
-      elog_error(TAG, "memory allocation failed");
-      goto exit;
+      elog_error(TAG, "%d bytes memory allocation failed", pcm_sample_count * (pFlac->bitsPerSample / 8));
+      break;
     }
-    uint32_t frame_count = drflac_read_pcm_frames_s16(pFlac, frame_pcm_size, sample);
+    /* 解码新一帧FLAC数据 */
+    uint32_t frame_count = drflac_read_pcm_frames_s16(pFlac, pFlac->maxBlockSizeInPCMFrames, sample);
+
     /* 将解码后的PCM数据写入SAI */
     if (frame_count != 0) {
-      // elog_verbose(TAG, "writing %d bytes of pcm data", frame_count * sizeof(drflac_int16));
-      audio_hal_write(sample, frame_count * pFlac->channels);
+      elog_verbose(TAG, "writing %d bytes of pcm data", frame_count * sizeof(drflac_int16));
+      audio_hal_write(sample, pcm_sample_count * pFlac->channels);
     } else { //文件已经读取完毕
       free(sample);
       elog_info(TAG, "play done");
@@ -142,13 +147,13 @@ void music_flac_play(const char *file_name)
     }
   }
 
-  audio_hal_stop();
-
   /* 关闭文件 */
   f_close(file);
   free(file);
 
 exit:
+  audio_hal_stop();
+
   if (pFlac) {
     drflac_close(pFlac);
   }
diff --git a/User/tasks/task_main.c b/User/tasks/task_main.c
index 3289ccd..317567d 100644
--- a/User/tasks/task_main.c
+++ b/User/tasks/task_main.c
@@ -153,6 +153,7 @@ void task_main_entry(void *param)
 
   while (1) {
     music_flac_play("四季音色 - 斑光.flac");
+    music_flac_play("唐九夏 - 一克拉月光.flac");
     music_mp3_play("夏川椎菜 - No.1.mp3");
     music_mp3_play("HoneyWorks,早見沙織 - 可愛くてごめん.mp3");
     music_mp3_play("堀江由衣 - silky heart.mp3");