---
language:
- lus
license: apache-2.0
pipeline_tag: automatic-speech-recognition
base_model: openai/whisper-medium
tags:
- generated_from_trainer
datasets:
- andrewbawitlung/MiZonal-v3.0
metrics:
- wer
- cer
model-index:
- name: whisper-medium-mizonal3-E1-lus-v2026.06
  results:
  - task:
      name: Automatic Speech Recognition
      type: automatic-speech-recognition
    dataset:
      name: MiZonal v3.0
      type: andrewbawitlung/MiZonal-v3.0
      config: default
      split: test
    metrics:
    - name: Wer
      type: wer
      value: 21.6845
    - name: Cer
      type: cer
      value: 6.6429
    - name: Real Time Factor
      type: rtf
      value: 0.0579
---
![Mizo Automatic Speech Recognition (ASR) Models v3.0](banner.jpg)

<!-- This model card has been generated automatically according to the information the Trainer had access to. You
should probably proofread and complete it, then remove this comment. -->

# whisper-medium-mizonal3-E1-lus-v2026.06

This model is a fine-tuned version of [openai/whisper-medium](https://huggingface.co/openai/whisper-medium) on the **MiZonal v3.0** dataset. 
Note: ~1 hour of conversational speech was added to this dataset version.

It achieves the following results on the evaluation set:
- Wer: 21.6845
- Cer: 6.6429
- Real Time Factor: 0.0579

## Quick Inference


```python
import torch
import librosa
from transformers import WhisperProcessor, WhisperForConditionalGeneration

device = "cuda" if torch.cuda.is_available() else "cpu"

processor = WhisperProcessor.from_pretrained("andrewbawitlung/whisper-medium-mizonal3-E1-lus-v2026.06")
model = WhisperForConditionalGeneration.from_pretrained("andrewbawitlung/whisper-medium-mizonal3-E1-lus-v2026.06").to(device)

audio, sr = librosa.load("your_audio.wav", sr=16000)
input_features = processor(audio, sampling_rate=16000, return_tensors="pt").input_features.to(device)

with torch.no_grad():
    predicted_ids = model.generate(input_features, max_new_tokens=256)

transcription = processor.batch_decode(predicted_ids, skip_special_tokens=True)[0]
print(transcription)
```


## Model description

### Experiment Configurations
This repository is part of a series of experiments. The different configurations are:
- **E1 (Baseline):** Standard training configuration.
- **E2 (Noise):** Training with background noise augmentation.
- **E3 (Speed):** Training with speed perturbation augmentation.
- **E4 (SpecAug):** Training with SpecAugment (time and frequency masking).
- **E5 (Combined):** Training with a combination of all augmentations.

### All Models in this Family
| Experiment | Hugging Face Repository |
| :--- | :--- |
| **E1 (Baseline)** | [andrewbawitlung/whisper-medium-mizonal3-E1-lus-v2026.06](https://huggingface.co/andrewbawitlung/whisper-medium-mizonal3-E1-lus-v2026.06) |
| **E2 (Noise)** | [andrewbawitlung/whisper-medium-mizonal3-E2-lus-v2026.06](https://huggingface.co/andrewbawitlung/whisper-medium-mizonal3-E2-lus-v2026.06) |
| **E3 (Speed)** | [andrewbawitlung/whisper-medium-mizonal3-E3-lus-v2026.06](https://huggingface.co/andrewbawitlung/whisper-medium-mizonal3-E3-lus-v2026.06) |
| **E4 (SpecAug)** | [andrewbawitlung/whisper-medium-mizonal3-E4-lus-v2026.06](https://huggingface.co/andrewbawitlung/whisper-medium-mizonal3-E4-lus-v2026.06) |
| **E5 (Combined)** | [andrewbawitlung/whisper-medium-mizonal3-E5-lus-v2026.06](https://huggingface.co/andrewbawitlung/whisper-medium-mizonal3-E5-lus-v2026.06) |

### Training hyperparameters

The following hyperparameters were used during training:
- learning_rate: 0.0003
- train_batch_size: 8
- eval_batch_size: 8
- seed: 42
- optimizer: OptimizerNames.ADAMW_TORCH_FUSED
- lr_scheduler_type: SchedulerType.LINEAR
- num_epochs: 8

### Training results

| step | epoch | train_loss | eval_loss | eval_wer | eval_cer | learning_rate | grad_norm |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 250 | 0.91 | 0.6204 | 0.6075 | 191.75 | 122.09 | 1.49e-04 | 6.02 |
| 500 | 1.82 | 0.7347 | 0.7841 | 61.61 | 29.12 | 2.99e-04 | 5.98 |
| 750 | 2.73 | 0.5891 | 0.7306 | 50.03 | 22.44 | 2.56e-04 | 4.86 |
| 1000 | 3.64 | 0.3789 | 0.6051 | 32.77 | 13.89 | 2.12e-04 | 3.08 |
| 1250 | 4.55 | 0.2269 | 0.5719 | 28.95 | 11.41 | 1.68e-04 | 2.71 |
| 1500 | 5.46 | 0.1241 | 0.5292 | 38.97 | 23.80 | 1.24e-04 | 1.89 |
| 1750 | 6.36 | 0.0627 | 0.5197 | 23.02 | 8.40 | 7.96e-05 | 1.37 |
| 2000 | 7.27 | 0.0208 | 0.4816 | 19.56 | 6.01 | 3.55e-05 | 0.73 |