diff --git a/lib/Envelope.cpp b/lib/Envelope.cpp
index 455c71a..d5d27cc 100644
--- a/lib/Envelope.cpp
+++ b/lib/Envelope.cpp
@@ -1,20 +1,22 @@
 #include "amuse/Envelope.hpp"
 
+#include <array>
+
 #include "amuse/AudioGroupPool.hpp"
 #include "amuse/Voice.hpp"
 
 namespace amuse {
 
-static int32_t MIDItoTIME[104] = {/* [0..103] -> milliseconds */
-                                  0,     10,    20,    30,    40,    50,    60,    70,    80,    90,    100,   110,
-                                  110,   120,   130,   140,   150,   160,   170,   190,   200,   220,   230,   250,
-                                  270,   290,   310,   330,   350,   380,   410,   440,   470,   500,   540,   580,
-                                  620,   660,   710,   760,   820,   880,   940,   1000,  1000,  1100,  1200,  1300,
-                                  1400,  1500,  1600,  1700,  1800,  2000,  2100,  2300,  2400,  2600,  2800,  3000,
-                                  3200,  3500,  3700,  4000,  4300,  4600,  4900,  5300,  5700,  6100,  6500,  7000,
-                                  7500,  8100,  8600,  9300,  9900,  10000, 11000, 12000, 13000, 14000, 15000, 16000,
-                                  17000, 18000, 19000, 21000, 22000, 24000, 26000, 28000, 30000, 32000, 34000, 37000,
-                                  39000, 42000, 45000, 49000, 50000, 55000, 60000, 65000};
+// [0..103] -> milliseconds
+constexpr std::array<int32_t, 104> MIDItoTIME{
+    0,     10,    20,    30,    40,    50,    60,    70,    80,    90,    100,   110,   110,   120,   130,
+    140,   150,   160,   170,   190,   200,   220,   230,   250,   270,   290,   310,   330,   350,   380,
+    410,   440,   470,   500,   540,   580,   620,   660,   710,   760,   820,   880,   940,   1000,  1000,
+    1100,  1200,  1300,  1400,  1500,  1600,  1700,  1800,  2000,  2100,  2300,  2400,  2600,  2800,  3000,
+    3200,  3500,  3700,  4000,  4300,  4600,  4900,  5300,  5700,  6100,  6500,  7000,  7500,  8100,  8600,
+    9300,  9900,  10000, 11000, 12000, 13000, 14000, 15000, 16000, 17000, 18000, 19000, 21000, 22000, 24000,
+    26000, 28000, 30000, 32000, 34000, 37000, 39000, 42000, 45000, 49000, 50000, 55000, 60000, 65000,
+};
 
 void Envelope::reset(const ADSR* adsr) {
   m_phase = State::Attack;