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---
license: apache-2.0
base_model: facebook/wav2vec2-base
tags:
- generated_from_trainer
metrics:
- wer
model-index:
- name: wav2vec2-jv-base-openslr
  results: []
datasets:
- openslr/openslr
language:
- jv
pipeline_tag: automatic-speech-recognition
---

<!-- 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. -->

# wav2vec2-jv-base-openslr

This model is a fine-tuned version of [facebook/wav2vec2-base](https://huggingface.co/facebook/wav2vec2-base) on the [OpenSLR41](https://openslr.org/41/) datasets.
It achieves the following results on the evaluation set:
- Loss: 0.2843
- Wer: 0.1502

## Model description

The model is a fine-tuned version of wav2vec2, specifically adapted using the OpenSLR 41 dataset, which is focused on the Javanese language domain. This adaptation enables the model to effectively recognize and process spoken Javanese, leveraging the robust capabilities of the wav2vec2 architecture combined with domain-specific training data.

## Intended uses & limitations

This model is intended for transcribing spoken Javanese language from audio recordings. It achieves a Word Error Rate (WER) of 15%, indicating that while the model performs reasonably well, it still produces significant transcription errors. Users should be aware that the accuracy may vary, particularly in cases with challenging audio conditions or less common dialects. Additionally, this model requires input audio at a sample rate of 16kHz, which may limit its applicability for recordings at different sample rates or lower quality audio files.

## Training and evaluation data

The model use OpenSLR41 datasets, and split into 2 section (training and testing), then the model is trained using 1xA100 GPU with a training duration of 4-5 hours.

### Training hyperparameters

The following hyperparameters were used during training:
- learning_rate: 0.0001
- train_batch_size: 8
- eval_batch_size: 8
- seed: 42
- optimizer: Adam with betas=(0.9,0.999) and epsilon=1e-08
- lr_scheduler_type: linear
- lr_scheduler_warmup_steps: 1000
- num_epochs: 65
- mixed_precision_training: Native AMP

### Log Data | Training results

| Training Loss | Epoch   | Step  | Validation Loss | Wer    |
|:-------------:|:-------:|:-----:|:---------------:|:------:|
| 0.5361        | 2.8329  | 2000  | 0.4626          | 0.4238 |
| 0.332         | 5.6657  | 4000  | 0.3857          | 0.3749 |
| 0.242         | 8.4986  | 6000  | 0.3456          | 0.3060 |
| 0.1893        | 11.3314 | 8000  | 0.3250          | 0.2846 |
| 0.1566        | 14.1643 | 10000 | 0.3260          | 0.2640 |
| 0.1433        | 16.9972 | 12000 | 0.2891          | 0.2516 |
| 0.124         | 19.8300 | 14000 | 0.3172          | 0.2433 |
| 0.1103        | 22.6629 | 16000 | 0.3099          | 0.2453 |
| 0.1015        | 25.4958 | 18000 | 0.3087          | 0.2295 |
| 0.088         | 28.3286 | 20000 | 0.3250          | 0.2054 |
| 0.0831        | 31.1615 | 22000 | 0.3127          | 0.2143 |
| 0.0748        | 33.9943 | 24000 | 0.2973          | 0.1923 |
| 0.0696        | 36.8272 | 26000 | 0.3103          | 0.2026 |
| 0.0622        | 39.6601 | 28000 | 0.3292          | 0.2068 |
| 0.0564        | 42.4929 | 30000 | 0.2965          | 0.1916 |
| 0.0507        | 45.3258 | 32000 | 0.3061          | 0.1819 |
| 0.0475        | 48.1586 | 34000 | 0.2784          | 0.1881 |
| 0.0448        | 50.9915 | 36000 | 0.2872          | 0.1764 |
| 0.0413        | 53.8244 | 38000 | 0.2854          | 0.1716 |
| 0.0357        | 56.6572 | 40000 | 0.2862          | 0.1723 |
| 0.0328        | 59.4901 | 42000 | 0.2887          | 0.1654 |
| 0.0324        | 62.3229 | 44000 | 0.2843          | 0.1502 |

### How to run (Gradio Web)
```python
import torch
import torchaudio
import gradio as gr
import numpy as np
from transformers import pipeline, AutoProcessor, AutoModelForCTC

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

# Load the model and processor
MODEL_NAME = "<fill this to your model>"
processor = AutoProcessor.from_pretrained(MODEL_NAME)
model = AutoModelForCTC.from_pretrained(MODEL_NAME)

# Move model to GPU
model.to(device)

# Create the pipeline with the model and processor
transcriber = pipeline("automatic-speech-recognition", model=model, tokenizer=processor.tokenizer, feature_extractor=processor.feature_extractor, device=device)

def transcribe(audio):
    sr, y = audio
    y = y.astype(np.float32)
    y /= np.max(np.abs(y))

    return transcriber({"sampling_rate": sr, "raw": y})["text"]

demo = gr.Interface(
    transcribe,
    gr.Audio(sources=["upload"]),
    "text",
)

demo.launch(share=True)
```

### How to run
```python
import torch
import torchaudio
import gradio as gr
import numpy as np
from transformers import pipeline, AutoProcessor, AutoModelForCTC

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

# Load the model and processor
MODEL_NAME = "<fill this to actual model>"
processor = AutoProcessor.from_pretrained(MODEL_NAME)
model = AutoModelForCTC.from_pretrained(MODEL_NAME)

# Move model to GPU
model.to(device)

# Load audio file
AUDIO_PATH = "<replace 'path_to_audio_file.wav' with the actual path to your audio file>"
audio_input, sample_rate = torchaudio.load(AUDIO_PATH)

# Ensure the audio is mono (1 channel)
if audio_input.shape[0] > 1:
    audio_input = torch.mean(audio_input, dim=0, keepdim=True)

# Resample audio if necessary
if sample_rate != 16000:
    resampler = torchaudio.transforms.Resample(orig_freq=sample_rate, new_freq=16000)
    audio_input = resampler(audio_input)

# Process the audio input
input_values = processor(audio_input.squeeze(), sampling_rate=16000, return_tensors="pt").input_values

# Move input values to GPU
input_values = input_values.to(device)

# Perform inference
with torch.no_grad():
    logits = model(input_values).logits

# Decode the logits to text
predicted_ids = torch.argmax(logits, dim=-1)
transcription = processor.batch_decode(predicted_ids)[0]

print("Transcription:", transcription)
```

### Framework versions

- Transformers 4.44.0
- Pytorch 2.2.1+cu118
- Datasets 2.20.0
- Tokenizers 0.19.1