Avano - Persian Multi-Speaker Voice Transcription Service

Avano is a powerful Persian speech-to-text service designed for multi-speaker transcription in a single audio session.

آوانو یک سرویس قدرتمند تبدیل صوت به متن فارسی است که برای پیاده‌سازی متن گفتارِ چند سخنران در یک جلسه صوتی طراحی شده است.

Model Information

Avano uses OpenAI Whisper Large v3 for speech recognition, configured to transcribe Persian audio.

Key Features of the Model

• 🎯 Multilingual speech recognition with Persian transcription support
• 🚀 Based on OpenAI's Whisper Large V3 Turbo architecture
• 📊 14.07% Word Error Rate (WER)
• 💪 Optimized for Persian voice transcription

Installation Guide

Prerequisites

• Python 3.10 or higher
• CUDA-compatible GPU (recommended)
• Docker and Docker Compose (optional)

Option 1: Using Docker (Recommended)

1. Clone the repository:

git clone https://github.com/ma14ch/avano.git
cd avano

2. Start the service using Docker Compose:

docker-compose up --build

The service will be available at http://localhost:5016.

Option 2: Manual Installation

1. Clone the repository:

git clone https://github.com/ma14ch/avano.git
cd avano

2. Create and activate a virtual environment:

python -m venv venv
source venv/bin/activate  # On Windows use: venv\Scripts\activate

3. Install dependencies:

pip install -r requirements.txt

4. Run the service:

python src/main.py

The service will be available at http://localhost:5016.

Environment Configuration

• The service automatically detects GPU availability
• Default port is 5016 (can be modified in main.py)
• Model files are stored in the models/ directory

API Usage Examples with curl

Basic API Status Check

Check if the API is running:

curl -X GET http://localhost:5016/

---

Speech-to-Text Transcription with Speaker Diarization

Send an audio file for transcription:

curl -X POST http://localhost:5016/api/inference/ \
  -F "audio_file=@/path/to/your/audio/file.mp3" \
  -F "num_speakers=2"

Parameters

• audio_file: The audio file to transcribe (required)

• num_speakers: Number of speakers to identify (optional)

---

Check Model Status

Check if the models are loaded correctly:

curl -X GET http://localhost:5016/debug/models

---

Response Format

The API returns a JSON response with transcribed segments:

{
  "segments": [
    {
      "speaker": "SPEAKER_0",
      "start": 0.5,
      "end": 5.2,
      "transcription": "متن تبدیل‌شده برای گوینده اول"
    },
    {
      "speaker": "SPEAKER_1",
      "start": 5.8,
      "end": 10.3,
      "transcription": "متن تبدیل‌شده برای گوینده دوم"
    }
  ]
}

Model Limitations

• Optimized for clean audio quality
• Not designed for real-time streaming ASR
• May occasionally produce hallucinations (a common limitation in Whisper models)
• Best performance on standard Persian speech, may have reduced accuracy with heavy accents or dialects

License

This project is licensed under the MIT License - see the LICENSE file for details.