diff --git a/lib/lib_audio/es7243e/src/es7243e.cpp b/lib/lib_audio/es7243e/src/es7243e.cpp
index 536c237ec..6ea7824fb 100644
--- a/lib/lib_audio/es7243e/src/es7243e.cpp
+++ b/lib/lib_audio/es7243e/src/es7243e.cpp
@@ -95,4 +95,11 @@ esp_err_t es7243e_adc_init(TwoWire *tw, audio_hal_codec_config_t *codec_cfg)
     }
     return ret;
 }
+
+void es7243e_setgain(uint8_t gain) {
+  uint8_t gaintab[8] = {0x10, 0x12, 0x20, 0x22, 0x04, 0x40, 0x06, 0x42};
+  es7243e_write_reg(0x08, gaintab[gain & 7] | 0x09);
+}
+
+
 #endif
diff --git a/lib/lib_audio/es7243e/src/es7243e.h b/lib/lib_audio/es7243e/src/es7243e.h
index bef4b3ba6..b96889810 100644
--- a/lib/lib_audio/es7243e/src/es7243e.h
+++ b/lib/lib_audio/es7243e/src/es7243e.h
@@ -72,6 +72,7 @@ esp_err_t es7243e_adc_init(TwoWire *tw, audio_hal_codec_config_t *codec_cfg);
  */
 // esp_err_t es7243_adc_set_gain(es7243_input_mics_t mic_mask, es7243_gain_value_t gain);
 
+void es7243e_setgain(uint8_t gain);
 
 #ifdef __cplusplus
 }