fix: muscriptor_dynamics.py

muscriptor_dynamics.py

@@ -160,10 +160,11 @@ def read_midi(path):
                 args = body[i:i + count]
                 i += count
                 if high == 0x90 and args[1] > 0:
-                    sounding[(channel, args[0])] = tick
+                    sounding.setdefault((channel, args[0]), []).append(tick)
                 elif high == 0x80 or (high == 0x90 and args[1] == 0):
-                    start = sounding.pop((channel, args[0]), None)
-                    if start is not None:
+                    stack = sounding.get((channel, args[0]))
+                    if stack:
+                        start = stack.pop(0)
                         notes.append([start, tick - start, args[0], channel])
             else:
                 if status is None:
@@ -174,14 +175,16 @@ def read_midi(path):
                 args = body[i:i + count]
                 i += count
                 if high == 0x90 and args[1] > 0:
-                    sounding[(channel, args[0])] = tick
+                    sounding.setdefault((channel, args[0]), []).append(tick)
                 elif high == 0x80 or (high == 0x90 and args[1] == 0):
-                    start = sounding.pop((channel, args[0]), None)
-                    if start is not None:
+                    stack = sounding.get((channel, args[0]))
+                    if stack:
+                        start = stack.pop(0)
                         notes.append([start, tick - start, args[0], channel])
 
-    for (channel, pitch), start in sounding.items():
-        notes.append([start, 0, pitch, channel])
+    for (channel, pitch), stack in sounding.items():
+        for start in stack:
+            notes.append([start, 0, pitch, channel])
 
     tempo.sort(key=lambda item: item[0])