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README.md
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---
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license: mit
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---
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license: mit
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datasets:
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- openslr/librispeech_asr
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tags:
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- ASR
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- Automatic Speech Recognition
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- Whisper
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- Medusa
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- Speech
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- Speculative Decoding
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language:
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- en
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---
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# Whisper Medusa
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Whisper is an advanced encoder-decoder model for speech transcription and
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translation, processing audio through encoding and decoding stages. Given
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its large size and slow inference speed, various optimization strategies like
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Faster-Whisper and Speculative Decoding have been proposed to enhance performance.
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Our Medusa model builds on Whisper by predicting multiple tokens per iteration,
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which significantly improves speed with small degradation in WER. We train and
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evaluate our model on the LibriSpeech dataset, demonstrating speed improvements.
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---------
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## Training Details
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`aiola/whisper-medusa-linear-libri` was trained on the LibriSpeech dataset to perform audio translation.
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The Medusa heads were optimized for English, so for optimal performance and speed improvements, please use English audio only.
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---------
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## Usage
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To use `whisper-medusa-linear-libri` install [`whisper-medusa`](https://github.com/aiola/whisper-medusa-linear-libri) repo following the README instructions.
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Inference can be done using the following code:
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```python
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import torch
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import torchaudio
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from whisper_medusa import WhisperMedusaModel
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from transformers import WhisperProcessor
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model_name = "aiola/whisper-medusa-linear-libri"
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model = WhisperMedusaModel.from_pretrained(model_name)
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processor = WhisperProcessor.from_pretrained(model_name)
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path_to_audio = "path/to/audio.wav"
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SAMPLING_RATE = 16000
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language = "en"
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device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
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input_speech, sr = torchaudio.load(path_to_audio)
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if sr != SAMPLING_RATE:
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input_speech = torchaudio.transforms.Resample(sr, SAMPLING_RATE)(input_speech)
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input_features = processor(input_speech.squeeze(), return_tensors="pt", sampling_rate=SAMPLING_RATE).input_features
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input_features = input_features.to(device)
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model = model.to(device)
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model_output = model.generate(
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input_features,
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language=language,
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)
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predict_ids = model_output[0]
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pred = processor.decode(predict_ids, skip_special_tokens=True)
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print(pred)
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```
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