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docs/source/en/model_doc/encodec.md
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docs/source/en/model_doc/encodec.md
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<!--Copyright 2023 The HuggingFace Team. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
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an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
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specific language governing permissions and limitations under the License.
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⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
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rendered properly in your Markdown viewer.
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-->
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*This model was published in HF papers on 2022-10-24 and contributed to Hugging Face Transformers on 2023-06-14.*
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# EnCodec
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## Overview
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The EnCodec neural codec model was proposed in [High Fidelity Neural Audio Compression](https://huggingface.co/papers/2210.13438) by Alexandre Défossez, Jade Copet, Gabriel Synnaeve, Yossi Adi.
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The abstract from the paper is the following:
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*We introduce a state-of-the-art real-time, high-fidelity, audio codec leveraging neural networks. It consists in a streaming encoder-decoder architecture with quantized latent space trained in an end-to-end fashion. We simplify and speed-up the training by using a single multiscale spectrogram adversary that efficiently reduces artifacts and produce high-quality samples. We introduce a novel loss balancer mechanism to stabilize training: the weight of a loss now defines the fraction of the overall gradient it should represent, thus decoupling the choice of this hyper-parameter from the typical scale of the loss. Finally, we study how lightweight Transformer models can be used to further compress the obtained representation by up to 40%, while staying faster than real time. We provide a detailed description of the key design choices of the proposed model including: training objective, architectural changes and a study of various perceptual loss functions. We present an extensive subjective evaluation (MUSHRA tests) together with an ablation study for a range of bandwidths and audio domains, including speech, noisy-reverberant speech, and music. Our approach is superior to the baselines methods across all evaluated settings, considering both 24 kHz monophonic and 48 kHz stereophonic audio.*
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This model was contributed by [Matthijs](https://huggingface.co/Matthijs), [Patrick Von Platen](https://huggingface.co/patrickvonplaten) and [Arthur Zucker](https://huggingface.co/ArthurZ).
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The original code can be found [here](https://github.com/facebookresearch/encodec).
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## Usage example
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Here is a quick example of how to encode and decode an audio using this model:
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```python
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from datasets import Audio, load_dataset
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from transformers import AutoProcessor, EncodecModel
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librispeech_dummy = load_dataset("hf-internal-testing/librispeech_asr_dummy", "clean", split="validation")
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model = EncodecModel.from_pretrained("facebook/encodec_24khz", device_map="auto")
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processor = AutoProcessor.from_pretrained("facebook/encodec_24khz")
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librispeech_dummy = librispeech_dummy.cast_column("audio", Audio(sampling_rate=processor.sampling_rate))
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audio_sample = librispeech_dummy[-1]["audio"]["array"]
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inputs = processor(raw_audio=audio_sample, sampling_rate=processor.sampling_rate, return_tensors="pt").to(model.device)
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encoder_outputs = model.encode(inputs["input_values"], inputs["padding_mask"])
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# `encoder_outputs.audio_codes` contains discrete codes
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audio_values = model.decode(**encoder_outputs, padding_mask=inputs["padding_mask"])[0]
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# or the equivalent with a forward pass
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audio_values = model(inputs["input_values"], inputs["padding_mask"]).audio_values
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```
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## EncodecConfig
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[[autodoc]] EncodecConfig
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## EncodecFeatureExtractor
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[[autodoc]] EncodecFeatureExtractor
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- __call__
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## EncodecModel
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[[autodoc]] EncodecModel
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- decode
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- encode
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- forward
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