# Introduction

Please refer to <https://icefall.readthedocs.io/en/latest/recipes/librispeech.html>
for how to run models in this recipe.

# Transducers

There are various folders containing the name `transducer` in this folder.
The following table lists the differences among them.

|                        | Encoder   | Decoder            |
|------------------------|-----------|--------------------|
| `transducer`           | Conformer | LSTM               |
| `transducer_stateless` | Conformer | Embedding + Conv1d |
| `transducer_lstm     ` | LSTM      | LSTM               |

The decoder in `transducer_stateless` is modified from the paper
[Rnn-Transducer with Stateless Prediction Network](https://ieeexplore.ieee.org/document/9054419/).
We place an additional Conv1d layer right after the input embedding layer.