diff --git a/layers/tacotron.py b/layers/tacotron.py
index f512cd02..e3bcf655 100644
--- a/layers/tacotron.py
+++ b/layers/tacotron.py
@@ -231,7 +231,7 @@ class Decoder(nn.Module):
 
         Shapes:
             - inputs: batch x time x encoder_out_dim
-            - memory: batch x #mels_pecs x mel_spec_dim
+            - memory: batch x #mel_specs x mel_spec_dim
         """
         B = inputs.size(0)
         # Run greedy decoding if memory is None
@@ -308,6 +308,13 @@ class Decoder(nn.Module):
 
     
 class StopNet(nn.Module):
+    r"""
+    Predicting stop-token in decoder.
+    
+    Args:
+        r (int): number of output frames of the network.
+        memory_dim (int): feature dimension for each output frame.
+    """
     
     def __init__(self, r, memory_dim):
         super(StopNet, self).__init__()
@@ -317,6 +324,11 @@ class StopNet(nn.Module):
         self.sigmoid = nn.Sigmoid()
         
     def forward(self, inputs, rnn_hidden):
+        """
+        Args:
+            inputs: network output tensor with r x memory_dim feature dimension.
+            rnn_hidden: hidden state of the RNN cell.
+        """
         rnn_hidden = self.rnn(inputs, rnn_hidden)
         outputs = self.relu(rnn_hidden)
         outputs = self.linear(outputs)