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README.md
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---
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language: "cs"
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tags:
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- Czech
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- KKY
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- FAV
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license: "cc-by-nc-sa-4.0"
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---
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# wav2vec2-base-cs-50k
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This is a monolingual Czech Wav2Vec 2.0 base model pre-trained from 50 thousand hours of Czech speech.
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This model does not have a tokenizer as it was pretrained on audio alone. In order to use this model for speech recognition, a tokenizer should be created and the model should be fine-tuned on labeled text data.
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## Speech recognition results
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After fine-tuning, the model scored the following results on public datasets:
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- Czech portion of CommonVoice v16.0: **WER = 11.36%**
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See our paper for details.
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## Paper
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The preprint of our paper (accepted to INTERSPEECH 2024) is available at [tbd]
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### All models released within the paper
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- https://huggingface.co/fav-kky/wav2vec2-base-cs-50k (monolingual Czech)
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- https://huggingface.co/fav-kky/wav2vec2-base-de-50k (monolingual German)
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- https://huggingface.co/fav-kky/wav2vec2-base-cs-en-100k (bilingual Czech+English)
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- https://huggingface.co/fav-kky/wav2vec2-base-cs-de-100k (bilingual Czech+English)
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- https://huggingface.co/fav-kky/wav2vec2-base-en-de-100k (bilingual English+German)
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- https://huggingface.co/fav-kky/wav2vec2-base-cs-en-de-150k (trilingual Czech+English+German)
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## Citation
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If you find this model useful, please cite our paper:
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```
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tbd
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```
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## Usage
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Inputs must be 16kHz mono audio files.
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This model can be used e.g. to extract per-frame contextual embeddings from audio:
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```python
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from transformers import Wav2Vec2Model, Wav2Vec2FeatureExtractor
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import torchaudio
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feature_extractor = Wav2Vec2FeatureExtractor.from_pretrained("fav-kky/wav2vec2-base-cs-80k-ClTRUS")
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model = Wav2Vec2Model.from_pretrained("fav-kky/wav2vec2-base-cs-50k")
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speech_array, sampling_rate = torchaudio.load("/path/to/audio/file.wav")
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inputs = feature_extractor(
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speech_array,
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sampling_rate=16_000,
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return_tensors="pt"
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)["input_values"][0]
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output = model(inputs)
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embeddings = output.last_hidden_state.detach().numpy()[0]
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```
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## Related works
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