add sensable min/max

const.h

@@ -18,8 +18,25 @@
 
 #define BPM_MIN             30.0f
 #define BPM_MAX             300.0f
-#define VCO_MIN 40.0f
+
-#define VCO_MAX 3200.0f
+#define VCO_FREQ_MIN        40.0f
+#define VCO_FREQ_MAX        3200.0f
+#define VCO_VOLUME_MIN      0.0f
+#define VCO_VOLUME_MAX      1.0f
+
+#define FILTER_FREQ_MIN     20.0f
+#define FILTER_FREQ_MAX     20000.0f
+#define FILTER_RES_MIN      0.0f
+#define FILTER_RES_MAX      1.0f
+
+#define ENV_ATTACK_MIN      0.001f      // 1ms
+#define ENV_ATTACK_MAX      10.0f       // 10s
+#define ENV_RELEASE_MIN     0.001f      // 1ms
+#define ENV_RELEASE_MAX     10.0f       // 10s
+
+#define REVERB_AMOUNT_MIN   0.0f
+#define REVERB_AMOUNT_MAX   1.0f
+
 
 #define otherwise else