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docs/source/en/model_doc/pe_audio.md
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docs/source/en/model_doc/pe_audio.md
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<!--Copyright 2025 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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<<<<<<< Updated upstream
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*This model was released on 2025-04-17 and added to Hugging Face Transformers on 2025-12-16.*
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=======
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*This model was published in HF papers on 2025-04-17 and contributed to Hugging Face Transformers on 2025-12-16.*
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>>>>>>> Stashed changes
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# PE Audio
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[PE Audio](https://huggingface.co/papers/2504.13181) is the audio branch of Meta's Perception Encoder family. It contrastively aligns raw waveforms with text into a shared embedding space, trained on paired audio–caption data for cross-modal retrieval and zero-shot audio classification.
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Two heads are exposed on top of the same encoder. [`PeAudioModel`] returns one pooled embedding per clip for clip-level retrieval, while [`PeAudioFrameLevelModel`] returns one embedding every 40 ms for event localization and fine-grained temporal analysis.
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You can find all the official PE Audio checkpoints under the [perception-encoder-audio-visual](https://huggingface.co/collections/facebook/perception-encoder-audio-visual) collection.
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## Quickstart
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```py
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import torch
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from datasets import load_dataset
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from transformers import AutoProcessor, PeAudioModel
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processor = AutoProcessor.from_pretrained("facebook/pe-av-large")
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model = PeAudioModel.from_pretrained(
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"facebook/pe-av-large",
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device_map="auto",
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)
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ds = load_dataset("hf-internal-testing/librispeech_asr_dummy", "clean", split="validation")
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audio = ds[0]["audio"]["array"]
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labels = ["a dog barking", "a person speaking", "music playing"]
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audio_inputs = processor.feature_extractor(audio, sampling_rate=48_000, return_tensors="pt").to(model.device)
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text_inputs = processor.tokenizer(labels, padding=True, return_tensors="pt").to(model.device)
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inputs = {**audio_inputs, **text_inputs}
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with torch.no_grad():
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outputs = model(**inputs)
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probs = outputs.logits_audio_text.sigmoid()
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print({label: p.item() for label, p in zip(labels, probs[0])})
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```
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## Usage tips and notes
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- Audio must be mono (`feature_size=1`) and resampled to 48 kHz — the feature extractor warns but does not resample for you. Stereo input is not supported.
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- Variable-length audio is handled with `padding_mask` (not the usual `attention_mask`). The mask is downsampled internally by `dac_config.hop_length` before it reaches the encoder, so pass the raw waveform-resolution mask that the feature extractor returns.
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- [`PeAudioModel`] returns logits of shape `(n_audio, n_text)`. [`PeAudioFrameLevelModel`] returns `(n_audio, n_text, n_frames)` with one frame every 40 ms. Pick the class that matches the task — they share weights so swapping is cheap.
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- The text tower is a shared encoder loaded via `AutoModel` from `config.text_config`. The tokenizer is attached to the processor via `AutoTokenizer`, not a dedicated class.
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## PeAudioConfig
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[[autodoc]] PeAudioConfig
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## PeAudioEncoderConfig
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[[autodoc]] PeAudioEncoderConfig
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## PeAudioFeatureExtractor
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[[autodoc]] PeAudioFeatureExtractor
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- __call__
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## PeAudioProcessor
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[[autodoc]] PeAudioProcessor
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## PeAudioEncoder
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[[autodoc]] PeAudioEncoder
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- forward
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## PeAudioModel
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[[autodoc]] PeAudioModel
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- forward
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## PeAudioFrameLevelModel
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[[autodoc]] PeAudioFrameLevelModel
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- forward
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