WhatsApp Voice Talk

Turn WhatsApp voice messages into real-time conversations. This skill provides a complete pipeline: voice → transcription → intent detection → response generation → text-to-speech.

Perfect for:

• Voice assistants on WhatsApp
• Hands-free command interfaces
• Multi-lingual chatbots
• IoT voice control (drones, smart home, etc.)

Quick Start

1. Install Dependencies

pip install openai-whisper soundfile numpy

2. Process a Voice Message

const { processVoiceNote } = require('./scripts/voice-processor');
const fs = require('fs');

// Read a voice message (OGG, WAV, MP3, etc.)
const buffer = fs.readFileSync('voice-message.ogg');

// Process it
const result = await processVoiceNote(buffer);

console.log(result);
// {
//   status: 'success',
//   response: "Current weather in Delhi is 19°C, haze. Humidity is 56%.",
//   transcript: "What's the weather today?",
//   intent: 'weather',
//   language: 'en',
//   timestamp: 1769860205186
// }

3. Run Auto-Listener

For automatic processing of incoming WhatsApp voice messages:

node scripts/voice-listener-daemon.js

This watches ~/.clawdbot/media/inbound/ every 5 seconds and processes new voice files.

How It Works

Incoming Voice Message
        ↓
    Transcribe (Whisper API)
        ↓
  "What's the weather?"
        ↓
  Detect Language & Intent
        ↓
   Match against INTENTS
        ↓
   Execute Handler
        ↓
   Generate Response
        ↓
   Convert to TTS
        ↓
  Send back via WhatsApp

Key Features

✅ Zero Setup Complexity - No FFmpeg, no complex dependencies. Uses soundfile + Whisper.

✅ Multi-Language - Automatic English/Hindi detection. Extend easily.

✅ Intent-Driven - Define custom intents with keywords and handlers.

✅ Real-Time Processing - 5-10 seconds per message (after first model load).

✅ Customizable - Add weather, status, commands, or anything else.

✅ Production Ready - Built from real usage in Clawdbot.

Common Use Cases

Weather Bot

// User says: "What's the weather in Bangalore?"
// Response: "Current weather in Delhi is 19°C..."

// (Built-in intent, just enable it)

Smart Home Control

// User says: "Turn on the lights"
// Handler: Sends signal to smart home API
// Response: "Lights turned on"

Task Manager

// User says: "Add milk to shopping list"
// Handler: Adds to database
// Response: "Added milk to your list"

Status Checker

// User says: "Is the system running?"
// Handler: Checks system status
// Response: "All systems online"

Customization

Add a Custom Intent

Edit voice-processor.js:

1. Add to INTENTS map:

const INTENTS = {
  'shopping': {
    keywords: ['shopping', 'list', 'buy', 'खरीद'],
    handler: 'handleShopping'
  }
};

1. Add handler:

const handlers = {
  async handleShopping(language = 'en') {
    return {
      status: 'success',
      response: language === 'en' 
        ? "What would you like to add to your shopping list?"
        : "आप अपनी शॉपिंग लिस्ट में क्या जोड़ना चाहते हैं?"
    };
  }
};

Support More Languages

1. Update detectLanguage() for your language's Unicode:

const urduChars = /[\u0600-\u06FF]/g; // Add this

1. Add language code to returns:

return language === 'ur' ? 'Urdu response' : 'English response';

1. Set language in transcribe.py:

result = model.transcribe(data, language="ur")

Change Transcription Model

In transcribe.py:

model = whisper.load_model("tiny")    # Fastest, 39MB
model = whisper.load_model("base")    # Default, 140MB  
model = whisper.load_model("small")   # Better, 466MB
model = whisper.load_model("medium")  # Good, 1.5GB

Architecture

Scripts:

• transcribe.py - Whisper transcription (Python)
• voice-processor.js - Core logic (intent parsing, handlers)
• voice-listener-daemon.js - Auto-listener watching for new messages

References:

• SETUP.md - Installation and configuration
• API.md - Detailed function documentation

Integration with Clawdbot

If running as a Clawdbot skill, hook into message events:

// In your Clawdbot handler
const { processVoiceNote } = require('skills/whatsapp-voice-talk/scripts/voice-processor');

message.on('voice', async (audioBuffer) => {
  const result = await processVoiceNote(audioBuffer, message.from);
  
  // Send response back
  await message.reply(result.response);
  
  // Or send as voice (requires TTS)
  await sendVoiceMessage(result.response);
});

Performance

• First run: ~30 seconds (downloads Whisper model, ~140MB)
• Typical: 5-10 seconds per message
• Memory: ~1.5GB (base model)
• Languages: English, Hindi (easily extended)

Supported Audio Formats

OGG (Opus), WAV, FLAC, MP3, CAF, AIFF, and more via libsndfile.

WhatsApp uses Opus-coded OGG by default — works out of the box.

Troubleshooting

"No module named 'whisper'"

pip install openai-whisper

"No module named 'soundfile'"

pip install soundfile

Voice messages not processing?

1. Check: clawdbot status (is it running?)
2. Check: ~/.clawdbot/media/inbound/ (files arriving?)
3. Run daemon manually: node scripts/voice-listener-daemon.js (see logs)

Slow transcription?

Use smaller model: whisper.load_model("base") or "tiny"

Further Reading

• Setup Guide: See references/SETUP.md for detailed installation and configuration
• API Reference: See references/API.md for function signatures and examples
• Examples: Check scripts/ for working code

License

MIT - Use freely, customize, contribute back!

Built for real-world use in Clawdbot. Battle-tested with multiple languages and use cases.