diff --git a/src/engine/config.h b/src/engine/config.h
index c5fd5277..b1390648 100644
--- a/src/engine/config.h
+++ b/src/engine/config.h
@@ -17,7 +17,7 @@
 #define AUDIO_CHANNELS 1
 
 // Samplerate must be 8 / 16 / 24 / 32 / 48 KHz
-#define AUDIO_SAMPLERATE 48000
+#define AUDIO_SAMPLERATE 16000
 #define AUDIO_MIC_BUFFER_COUNT 16
 #define AUDIO_MIC_BUFFER_LENGTH 10
 #define AUDIO_MIC_BUFFER_SIZE  (AUDIO_MIC_BUFFER_LENGTH * AUDIO_SAMPLERATE / 1000 * 2 * AUDIO_CHANNELS)