diff --git a/const.h b/const.h
index f5e015b..cbb1b6f 100644
--- a/const.h
+++ b/const.h
@@ -12,4 +12,7 @@
 #define AMEN_BUTTON 8
 
 #define AUDIO_OUTPUT 0
-#define STATUS_LED 1
\ No newline at end of file
+#define STATUS_LED 1
+
+#define SAMPLE_RATE 44100.0f
+