Initial commit: FunASR Speech Recognition Toolkit

Add complete FunASR codebase including models, runtime, and documentation.

funasr/models/sanm/positionwise_feed_forward.py

@@ -0,0 +1,33 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+
+"""Positionwise feed forward layer definition."""
+
+import torch
+
+from funasr.models.transformer.layer_norm import LayerNorm
+
+
+class PositionwiseFeedForwardDecoderSANM(torch.nn.Module):
+    """Positionwise feed forward layer.
+
+    Args:
+        idim (int): Input dimenstion.
+        hidden_units (int): The number of hidden units.
+        dropout_rate (float): Dropout rate.
+
+    """
+
+    def __init__(self, idim, hidden_units, dropout_rate, adim=None, activation=torch.nn.ReLU()):
+        """Construct an PositionwiseFeedForward object."""
+        super(PositionwiseFeedForwardDecoderSANM, self).__init__()
+        self.w_1 = torch.nn.Linear(idim, hidden_units)
+        self.w_2 = torch.nn.Linear(hidden_units, idim if adim is None else adim, bias=False)
+        self.dropout = torch.nn.Dropout(dropout_rate)
+        self.activation = activation
+        self.norm = LayerNorm(hidden_units)
+
+    def forward(self, x):
+        """Forward function."""
+        return self.w_2(self.norm(self.dropout(self.activation(self.w_1(x)))))