fix height pooling for dolphin model

model.py

@@ -225,5 +225,6 @@ delphi_model = nn.Sequential(nn.Sequential(
   nn.LeakyReLU(0.01),
   nn.Dropout(p=.5),
   nn.Conv2d(64, 1, 1, bias=False),
+  nn.MaxPool2d((6, 1))
   )
-)
\ No newline at end of file
+)