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---
title: Audio Difficulty Estimator
emoji: 🎹
colorFrom: purple
colorTo: pink
sdk: gradio
sdk_version: "4.26.0"
python_version: 3.10.13
app_file: app.py
pinned: false
tags:
- music
- audio
- piano
- difficulty-estimation
short_description: Estimate piano difficulty from audio
hardware: "a100-large"
---
# 🎼 Music Difficulty Estimator
This Gradio app estimates the **difficulty of piano pieces** based on uploaded audio (MP3/MP4) or YouTube links. It uses pretrained models to generate a MIDI transcription and predict difficulty from three musical perspectives:
- CQT-based representation
- Piano roll representation
- Multimodal embeddings
## 🛠 How it works
1. You upload an audio or video file, or paste a YouTube link.
2. The audio is transcribed to MIDI using a piano transcription model.
3. Three different difficulty models analyze the audio and generate predictions.
4. You can listen to the extracted MP3 and the generated MIDI.
## 📦 Model loading
All models are stored separately in the [pramoneda/audio](https://huggingface.co/pramoneda/audio) model repository and are downloaded dynamically via `huggingface_hub`.
## 📁 Input formats
- MP3 audio
- MP4 video (audio extracted automatically)
- YouTube links
## ✨ Built with
- `gradio` for the interface
- `pydub` and `yt_dlp` for audio processing
- `huggingface_hub` to load model checkpoints
- `ffmpeg-python` for format conversion
## 🔗 Related
- [Model repo: pramoneda/audio](https://huggingface.co/pramoneda/audio)
- [More projects by pramoneda](https://huggingface.co/pramoneda)
---
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