Whisper Basque (eu) - CTranslate2 Conversion

This is a CTranslate2 conversion of xezpeleta/whisper-medium-eu designed for use with faster-whisper.

Model Details

• Base Model: OpenAI Whisper Base (original model card: whisper-medium)
• Finetuned for: Basque (eu) speech recognition
• Dataset: asierhv/composite_corpus_eu_v2.1 (Mozilla Common Voice 18.0 + Basque Parliament + OpenSLR)
• Conversion Format: CTranslate2 (optimized for inference)
• Compatibility: Designed for use with faster-whisper
• WER: 7.14% on Mozilla Common Voice 18.0

Usage with faster-whisper

First install required packages:

pip install faster-whisper

Then use the following code snippet:

from faster_whisper import WhisperModel

# Load the model (FP16 precision)
model = WhisperModel("xezpeleta/whisper-medium-eu-ct2", device="cuda", compute_type="float16")

# Transcribe audio file
segments, info = model.transcribe("audio.mp3", language="eu")

# Print transcription
for segment in segments:
    print("[%.2fs -> %.2fs] %s" % (segment.start, segment.end, segment.text))

Evaluation

The model achieves 7.14% Word Error Rate (WER) on the Basque test split of Mozilla Common Voice 18.0.

Conversion details

Converted from the original HuggingFace model using:

ct2-transformers-converter --model xezpeleta/whisper-medium-eu \
                           --output_dir whisper-medium-eu-ct2 \
                           --copy_files tokenizer.json preprocessor_config.json \
                           --quantization float16