diff --git a/src/Whistle.cpp b/src/Whistle.cpp
index 72ad2cc..edadc3c 100644
--- a/src/Whistle.cpp
+++ b/src/Whistle.cpp
@@ -26,12 +26,15 @@ const int CAN_RADIUS = 100;
 const int PEA_RADIUS = 30;
 const int BUMP_RADIUS = 5;
 
-const StkFloat NORM_CAN_LOSS = 0.97;
-const StkFloat SLOW_CAN_LOSS = 0.90;
+typedef StkFloat WhistleCanLoss;
+WhistleCanLoss NORM_CAN_LOSS = 0.97;
+WhistleCanLoss SLOW_CAN_LOSS = 0.90;
+
 const StkFloat GRAVITY = 20.0;
 
-const StkFloat NORM_TICK_SIZE = 0.004;
-const StkFloat SLOW_TICK_SIZE = 0.0001;
+typedef StkFloat WhistleTickSize;
+WhistleTickSize NORM_TICK_SIZE = 0.004;
+WhistleTickSize SLOW_TICK_SIZE = 0.0001;
 
 const StkFloat ENV_RATE = 0.001;