diff --git a/src/audio_board/ai_thinker_es8388_5.h b/src/audio_board/ai_thinker_es8388_5.h
index 93e2b0c..b80eee4 100644
--- a/src/audio_board/ai_thinker_es8388_5.h
+++ b/src/audio_board/ai_thinker_es8388_5.h
@@ -74,8 +74,6 @@
 #define GREEN_LED_GPIO            22
 #define BLUE_LED_GPIO              -1
 
-// extern audio_hal_func_t AUDIO_CODEC_ES8388_DEFAULT_HANDLE;
-
 #define AUDIO_CODEC_DEFAULT_CONFIG(){                   \
         .adc_input  = AUDIO_HAL_ADC_INPUT_LINE1,        \
         .dac_output = AUDIO_HAL_DAC_OUTPUT_ALL,         \
diff --git a/src/audio_board/ai_thinker_es8388_7.h b/src/audio_board/ai_thinker_es8388_7.h
index f948c3b..63ce351 100644
--- a/src/audio_board/ai_thinker_es8388_7.h
+++ b/src/audio_board/ai_thinker_es8388_7.h
@@ -73,8 +73,6 @@
 #define RESET_CODEC                -1
 #define RESET_BOARD                -1
 
-// extern audio_hal_func_t AUDIO_CODEC_ES8388_DEFAULT_HANDLE;
-
 #define AUDIO_CODEC_DEFAULT_CONFIG(){                   \
         .adc_input  = AUDIO_HAL_ADC_INPUT_LINE1,        \
         .dac_output = AUDIO_HAL_DAC_OUTPUT_ALL,         \
diff --git a/src/audio_board/esp32_s3_box.h b/src/audio_board/esp32_s3_box.h
index f515a79..ccd5598 100644
--- a/src/audio_board/esp32_s3_box.h
+++ b/src/audio_board/esp32_s3_box.h
@@ -28,8 +28,6 @@
 
 #define AUDIO_DRIVER AUDIO_CODEC_ES8311_DEFAULT_HANDLE
 #define AUDIO_DRIVER_ADC AUDIO_CODEC_ES7210_DEFAULT_HANDLE
-//extern audio_hal_func_t AUDIO_CODEC_ES8311_DEFAULT_HANDLE;
-//extern audio_hal_func_t AUDIO_CODEC_ES7210_DEFAULT_HANDLE;
 
 /**
  * @brief LCD SCREEN Function Definition
diff --git a/src/audio_board/esp32_s3_box_lite.h b/src/audio_board/esp32_s3_box_lite.h
index 8557dcd..c902e02 100644
--- a/src/audio_board/esp32_s3_box_lite.h
+++ b/src/audio_board/esp32_s3_box_lite.h
@@ -26,8 +26,6 @@
 
 #define AUDIO_DRIVER AUDIO_CODEC_ES8156_DEFAULT_HANDLE
 #define AUDIO_DRIVER_ADC AUDIO_CODEC_ES7243E_DEFAULT_HANDLE
-//extern audio_hal_func_t AUDIO_CODEC_ES8156_DEFAULT_HANDLE;
-//extern audio_hal_func_t AUDIO_CODEC_ES7243E_DEFAULT_HANDLE;
 
 /**
  * @brief LCD SCREEN Function Definition
diff --git a/src/audio_board/lyrat_v4_2.h b/src/audio_board/lyrat_v4_2.h
index 5717b78..747da7c 100644
--- a/src/audio_board/lyrat_v4_2.h
+++ b/src/audio_board/lyrat_v4_2.h
@@ -79,8 +79,6 @@
 #define RESET_BOARD                -1
 #define BLUE_LED_GPIO              -1
 
-//extern audio_hal_func_t AUDIO_CODEC_ES8388_DEFAULT_HANDLE;
-
 #define AUDIO_CODEC_DEFAULT_CONFIG(){                   \
         .adc_input  = AUDIO_HAL_ADC_INPUT_LINE1,        \
         .dac_output = AUDIO_HAL_DAC_OUTPUT_ALL,         \
diff --git a/src/audio_board/lyrat_v4_3.h b/src/audio_board/lyrat_v4_3.h
index 8605e06..f32e9fc 100644
--- a/src/audio_board/lyrat_v4_3.h
+++ b/src/audio_board/lyrat_v4_3.h
@@ -80,7 +80,6 @@
 #define RESET_BOARD                -1
 #define BLUE_LED_GPIO              -1
 
-//extern audio_hal_func_t AUDIO_CODEC_ES8388_DEFAULT_HANDLE;
 
 #define AUDIO_CODEC_DEFAULT_CONFIG(){                   \
         .adc_input  = AUDIO_HAL_ADC_INPUT_LINE1,        \