BUT-FIT/SE-DiCoW

🧠 SE-DiCoW: Self-Enrolled Diarization-Conditioned Whisper

This repository hosts SE-DiCoW, the state-of-the-art Target-Speaker ASR model developed by BUT Speech@FIT in collaboration with JHU CLSP/HLTCOE and CMU LTI.

<div align="center"> <img src="https://huggingface.co/BUT-FIT/SE-DiCoW/resolve/main/SE-DiCoW.png" alt="SE-DiCoW Architecture" width="800"/> </div>

🔧 Key Innovations

• —🔍 Self-Enrollment (SE): Automatically selects the most informative segment of the target speaker from the conversation and integrates it via cross-attention. This solves the ambiguity problem in fully overlapped regions.
• —⚡ Improved Conditioning: Introduces FDDT (Frame-Level Diarization Dependent Transformation) layers before positional embeddings for better signal modulation.
• —📉 Reduced Error: achieved ~75% relative reduction in tcpWER on Libri3Mix compared to v1.
• —🛠️ Training Stability: Uses less suppressive initialization and flexible data segmentation (no forced end-timestamps).
• —🔄 Robustness: Trained with STNO noise injection and SpecAugment to handle imperfect diarization.

⚡ Quick Usage

1. Run Interactive Demo (Gradio)

The easiest way to use this model is via the **DiCoW inference repository**. We provide a Gradio app that handles diarization, self-enrollment selection, and mask generation automatically:

git clone https://github.com/BUTSpeechFIT/DiCoW
cd DiCoW
python app.py

2. Load in Python

If you want to load the model manually (e.g., for custom scripts):

from transformers import AutoModelForSpeechSeq2Seq

# 1. Load the model (requires remote code for custom Self-Enrollment layers)
model = AutoModelForSpeechSeq2Seq.from_pretrained(
    "BUT-FIT/SE-DiCoW", 
    trust_remote_code=True
)

# Note: This model requires specific conditioning (STNO masks + Enrollment Audio).
# It cannot be run with standard Whisper pipelines.
# See inference code in the GitHub repo for details.

🧬 Reproducibility & Training

This model is fully open-source and can be easily reproduced using our toolkit.

1. Data Preparation Clone the [mt-asr-data-prep](https://github.com/BUTSpeechFIT/mt-asr-data-prep) repository and run the setup script:

./prepare.sh --single-mic-only --root-dir /path/to/workdir

2. Training Clone the training repository [TS-ASR-Whisper](https://github.com/BUTSpeechFIT/TS-ASR-Whisper) and launch the experiment using the se_dicow recipe:

# Run this from the root of the TS-ASR-Whisper repository
sbatch --export SRC_ROOT=$PWD scripts/submit_slurm.sh +train=se_dicow

🏆 Performance Snapshot (tcpWER)

Metric: Time-Constrained Minimum Permutation WER (5s collar) - DiariZen Diarization

🔗 [View Full Leaderboard](https://huggingface.co/spaces/BUT-FIT/EMMA_leaderboard)

📦 Model Details

• —Base Model: Whisper large-v3-turbo
• —Training Datasets: NOTSOFAR-1, AMI, LibriMix (2/3 spk), Synthetic LibriSpeech.
• —Mechanism: Diarization-Conditioned + Self-Enrollment Cross-Attention.

📚 Citations

If you use this model, please cite our ICASSP 2026 and CS&L 2026 papers:

@INPROCEEDINGS{polok2026sedicow,
  author={Polok, Alexander and Klement, Dominik and Cornell, Samuele and Wiesner, Matthew and Černocký, Jan and Khudanpur, Sanjeev and Burget, Lukáš},
  booktitle={ICASSP 2026 - 2026 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)}, 
  title={SE-DiCoW: Self-Enrolled Diarization-Conditioned Whisper}, 
  year={2026},
}

@article{POLOK2026101841,
    title = {DiCoW: Diarization-conditioned Whisper for target speaker automatic speech recognition},
    journal = {Computer Speech & Language},
    volume = {95},
    year = {2026},
    doi = {10.1016/j.csl.2025.101841},
    author = {Alexander Polok et al.}
}

📬 Contact

• —Issues: GitHub Issues
• —Email: ipoloka@fit.vut.cz