espnet2.legacy.nets.pytorch_backend.transducer.conv1d_nets.Conv1d

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class espnet2.legacy.nets.pytorch_backend.transducer.conv1d_nets.Conv1d(idim: int, odim: int, kernel_size: int | Tuple, stride: int | Tuple = 1, dilation: int | Tuple = 1, groups: int | Tuple = 1, bias: bool = True, batch_norm: bool = False, relu: bool = True, dropout_rate: float = 0.0)

Bases: Module

1D convolution module for custom encoder.

• Parameters:
  • idim – Input dimension.
  • odim – Output dimension.
  • kernel_size – Size of the convolving kernel.
  • stride – Stride of the convolution.
  • dilation – Spacing between the kernel points.
  • groups – Number of blocked connections from input channels to output channels.
  • bias – Whether to add a learnable bias to the output.
  • batch_norm – Whether to use batch normalization after convolution.
  • relu – Whether to use a ReLU activation after convolution.
  • dropout_rate – Dropout rate.

Construct a Conv1d module object.

create_new_mask(mask: Tensor) → Tensor

Create new mask.

• Parameters:mask – Mask of input sequences. (B, 1, T)
• Returns: Mask of output sequences. (B, 1, sub(T))
• Return type: mask

create_new_pos_embed(pos_embed: Tensor) → Tensor

Create new positional embedding vector.

• Parameters:pos_embed – Input sequences positional embedding. (B, 2 * (T - 1), D_att)
• Returns: Output sequences positional embedding. : (B, 2 * (sub(T) - 1), D_att)
• Return type: pos_embed

forward(sequence: Tensor | Tuple[Tensor, Tensor], mask: Tensor) → Tuple[Tensor | Tuple[Tensor, Tensor], Tensor]

Forward ConvEncoderLayer module object.

• Parameters:

  • sequence –

    Input sequences. (B, T, D_in)

    or (B, T, D_in), (B, 2 * (T - 1), D_att)

  • mask – Mask of input sequences. (B, 1, T)

• Returns: Output sequences. : (B, sub(T), D_out) : or (B, sub(T), D_out), (B, 2 * (sub(T) - 1), D_att)

  mask: Mask of output sequences. (B, 1, sub(T))

• Return type: sequence