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--- |
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language: "en" |
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thumbnail: |
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tags: |
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- ASR |
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- CTC |
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- Attention |
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- Transformer |
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- pytorch |
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license: "apache-2.0" |
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datasets: |
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- librispeech |
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metrics: |
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- wer |
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- cer |
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--- |
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# CRDNN with CTC/Attention and RNNLM trained on LibriSpeech |
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This repository provides all the necessary tools to perform automatic speech |
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recognition from an end-to-end system pretrained on LibriSpeech (EN) within |
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SpeechBrain. For a better experience, we encourage you to learn more about |
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[SpeechBrain](https://speechbrain.github.io). The given ASR model performance are: |
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| Release | Test clean WER | Test other WER | GPUs | |
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|:-------------:|:--------------:|:--------------:|:--------:| |
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| 05-03-21 | 2.46 | 5.86 | 2xV100 32GB | |
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## Pipeline description |
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This ASR system is composed of 3 different but linked blocks: |
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1. Tokenizer (unigram) that transforms words into subword units and trained with |
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the train transcriptions of LibriSpeech. |
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2. Neural language model (Transformer LM) trained on the full 10M words dataset. |
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3. Acoustic model made of a transformer encoder and a joint decoder with CTC + |
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transformer. Hence, the decoding also incorporates the CTC probabilities. |
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## Intended uses & limitations |
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This model has been primarily developed to be run within SpeechBrain as a pretrained ASR model |
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for the English language. Thanks to the flexibility of SpeechBrain, any of the 3 blocks |
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detailed above can be extracted and connected to your custom pipeline as long as SpeechBrain is |
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installed. |
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## Install SpeechBrain |
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First of all, please install SpeechBrain with the following command: |
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``` |
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pip install speechbrain |
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``` |
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Please notice that we encourage you to read our tutorials and learn more about |
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[SpeechBrain](https://speechbrain.github.io). |
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### Transcribing your own audio files (in English) |
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```python |
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from speechbrain.pretrained import TransformerASR |
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asr_model = TransformerASR.from_hparams(source="speechbrain/asr-transformer-transformerlm-librispeech", savedir="pretrained_models/asr-transformer-transformerlm-librispeech") |
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asr_model.transcribe_file("speechbrain/asr-transformer-transformerlm-librispeech/example.wav") |
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``` |
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#### Referencing SpeechBrain |
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``` |
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@misc{SB2021, |
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author = {Ravanelli, Mirco and Parcollet, Titouan and Rouhe, Aku and Plantinga, Peter and Rastorgueva, Elena and Lugosch, Loren and Dawalatabad, Nauman and Ju-Chieh, Chou and Heba, Abdel and Grondin, Francois and Aris, William and Liao, Chien-Feng and Cornell, Samuele and Yeh, Sung-Lin and Na, Hwidong and Gao, Yan and Fu, Szu-Wei and Subakan, Cem and De Mori, Renato and Bengio, Yoshua }, |
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title = {SpeechBrain}, |
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year = {2021}, |
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publisher = {GitHub}, |
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journal = {GitHub repository}, |
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howpublished = {\url{https://github.com/speechbrain/speechbrain}}, |
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} |
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``` |
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