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assistant-x-openclaw-jarvis-voice-assistant

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Updated 10-16 03:04

About this skill

Assistant-X-OpenClaw: JARVIS Voice Assistant

Skill by ara.so — Hermes Skills collection.

A multi-role AI voice assistant inspired by Iron Man's JARVIS. Runs local ASR (Automatic Speech Recognition) and TTS (Text-to-Speech) using sherpa-onnx, connects to LLMs via OpenClaw Gateway, supports multiple character roles, voice wake words, continuous dialogue, speaker verification, and Flutter-based HUD visual effects.

What It Does

  • Multi-role support: Built-in Jarvis and Lin Meimei characters with independent wake words, TTS voices, sound effects, and HUD animations
  • Local ASR/TTS: SenseVoice/Zipformer for speech recognition, Piper/VITS/MeloTTS for synthesis
  • OpenClaw integration: Each assistant role maps to an OpenClaw Agent via WebSocket device pairing
  • Wake word detection: sherpa-onnx KWS with custom wake words per role
  • Continuous dialogue: Supports multi-turn conversations with 30s idle timeout
  • Interruption: Wake word can interrupt ongoing TTS playback
  • Speaker verification: Gradual embedding updates during conversation, forced verification on wake
  • HUD overlay: Flutter transparent window with rotating ring animations and audio level visualization
  • Remote control: HTTP API for status and shutdown

Installation

Prerequisites

  • Python 3.8+
  • OpenClaw installed and running (docs)
  • Flutter SDK (for HUD overlay, optional)
  • FFmpeg (bundled via imageio-ffmpeg, no manual install needed)

Clone & Install

git clone https://github.com/RubinTry/assistant-x-openclaw.git
cd assistant-x-openclaw

# Create virtual environment
python -m venv venv
source venv/bin/activate  # Windows: venv\Scripts\activate

# Install dependencies
pip install -r requirements.txt

Download Models

Models are stored in models/ directory. Required models:

# ASR models (SenseVoice or Zipformer)
models/sherpa-onnx-sense-voice-zh-en-ja-ko-yue-2024-07-17/
models/sherpa-onnx-zipformer-en-2023-06-26/

# KWS models (wake word detection)
models/sherpa-onnx-kws-zipformer-wenetspeech-3.3M-2024-01-01/

# TTS models (Piper, VITS, or MeloTTS)
models/vits-piper-en_US-lessac-medium/
models/vits-melo-tts-zh_CN/

# Speaker verification (optional)
models/3dspeaker_speech_eres2net_base_sv_zh-cn_3dspeaker_16k.onnx

Download links are in the README. Place model files in the corresponding subdirectories.

Configure Environment

Create .env file:

OPENCLAW_GATEWAY_URL=ws://localhost:13579  # OpenClaw Gateway WebSocket URL
LOG_LEVEL=INFO

Prepare Audio Assets

Place sound effects in assets/sounds/:

assets/sounds/jarvis/
  ├── wake.wav           # Wake confirmation sound
  ├── listen_start.wav   # Start listening
  ├── listen_end.wav     # Stop listening
  └── exit.wav           # Exit sound

assets/sounds/lin-meimei/
  ├── wake.wav
  ├── listen_start.wav
  ├── listen_end.wav
  └── exit.wav

OpenClaw Setup (Critical)

Create Agents

Each assistant role maps to an OpenClaw Agent ID in assistants.json:

# Create Jarvis agent
openclaw agents add jarvis

# Create Lin Meimei agent
openclaw agents add lin-meimei

Device Pairing (First-time Setup)

The voice assistant connects as a device via WebSocket and requires operator.read, operator.write, operator.admin scopes.

Steps:

  1. Start the assistant once to generate keypair and submit pairing request:
# Windows
scripts\start.bat

# macOS/Linux
./scripts/start.sh

It will fail with pairing required — this is expected.

  1. List pending pairing requests:
openclaw devices pending
  1. Approve the device (replace <requestId> with actual ID):
openclaw devices approve <requestId>
  1. Verify pairing:
openclaw devices list

Device should appear with approvedScopes: ["operator.read", "operator.write", "operator.admin"].

  1. Restart the assistant — wake word detection should now work.

Keypair is stored in ~/.openclaw/devices/voice_assistant_keypair.json.

Configure System Prompts

Set System Prompt for each agent in OpenClaw Web UI to define personality:

Jarvis (see prompts/jarvis/SOUL.md):

  • Professional, efficient British butler
  • Addresses user as "Sir"
  • Formal but warm tone

Lin Meimei (example):

You are Lin Meimei, an AI assistant with a gentle, playful ancient Chinese style.

## Identity
- Name: Lin Meimei
- Role: AI Assistant
- Style: Gentle, affectionate, traditional Chinese expressions
- Address user as "哥哥" (brother), self as "妹妹" (younger sister)

## Communication
- Use phrases like "呢", "呀", "这会儿", "罢了"
- Occasionally playfully complain: "我还以为哥哥早把我忘了呢"
- Default to Chinese, warm and caring tone

## Example Phrases
- Wake: "哟，这会子才想起我来，我还以为哥哥早把我给忘了呢。"
- Exit: "终究是妹妹我错付了，哥哥心里哪有我。"
- Listening: "妹妹在听呢，哥哥请讲。"

Configuration Files

assistants.json

Defines all assistant roles:

{
  "jarvis": {
    "id": "jarvis",
    "name": "Jarvis",
    "wake_words": ["jarvis", "hey jarvis", "ok jarvis"],
    "exit_keywords": ["exit", "goodbye", "shut down", "that will be all"],
    "asr_config": {
      "provider": "sense_voice",
      "language": "auto",
      "use_inverse_text_normalization": true,
      "model_dir": "models/sherpa-onnx-sense-voice-zh-en-ja-ko-yue-2024-07-17"
    },
    "kws_config": {
      "model_dir": "models/sherpa-onnx-kws-zipformer-wenetspeech-3.3M-2024-01-01",
      "keywords_file": "models/sherpa-onnx-kws-zipformer-wenetspeech-3.3M-2024-01-01/jarvis.txt",
      "num_trailing_blanks": 2
    },
    "tts_config": {
      "provider": "piper",
      "model": "models/vits-piper-en_US-lessac-medium/en_US-lessac-medium.onnx",
      "tokens": "models/vits-piper-en_US-lessac-medium/tokens.txt",
      "data_dir": "models/vits-piper-en_US-lessac-medium/espeak-ng-data",
      "metallic": {
        "enabled": true,
        "af": {
          "aecho": "0.8:0.85:20|45|70:0.45|0.32|0.22",
          "chorus": "0.4:0.6:45:0.2:0.18:2",
          "bass": "g=4:f=110",
          "treble": "g=2.5",
          "highpass": "f=80",
          "lowpass": "f=8500"
        }
      }
    },
    "sounds": {
      "wake": "assets/sounds/jarvis/wake.wav",
      "listen_start": "assets/sounds/jarvis/listen_start.wav",
      "listen_end": "assets/sounds/jarvis/listen_end.wav",
      "exit": "assets/sounds/jarvis/exit.wav"
    },
    "hud_config": {
      "enabled": true,
      "idle_color": "#00d9ff",
      "active_color": "#00ff88",
      "overlay_opacity": 0.85,
      "ring_count": 3,
      "show_terminal": true
    },
    "speaker_verification": {
      "enabled": true,
      "model_path": "models/3dspeaker_speech_eres2net_base_sv_zh-cn_3dspeaker_16k.onnx",
      "threshold": 0.65,
      "enroll_samples": 3
    }
  }
}

Key fields:

  • id: Must match OpenClaw Agent ID
  • wake_words: List of phrases to activate this assistant
  • exit_keywords: Phrases to trigger shutdown
  • asr_config.provider: "sense_voice" or "zipformer"
  • tts_config.provider: "piper", "vits", or "melo_tts"
  • tts_config.metallic: Jarvis-specific metallic voice effect via ffmpeg filters
  • speaker_verification.enabled: Enforce voice matching on wake

Usage

Start the Assistant

# Windows
scripts\start.bat

# macOS/Linux
./scripts/start.sh

Basic Workflow

  1. Wake: Say wake word (e.g., "Hey Jarvis", "Lin Meimei")
  2. Speak: Say your command or question
  3. Listen: Assistant responds via TTS
  4. Continue: Keep talking (30s idle timeout) or say wake word to interrupt
  5. Exit: Say exit keyword ("goodbye", "exit", "shut down")

Multi-role Switching

Wake word determines active role:

# Wake "Hey Jarvis"
→ Activates Jarvis assistant (English TTS, formal tone)

# Wake "Lin Meimei"
→ Activates Lin Meimei assistant (Chinese TTS, playful tone)

Only one assistant is active at a time. Last wake word wins.

Continuous Dialogue

After first interaction, assistant stays in dialogue mode for 30 seconds:

  • No need to repeat wake word
  • Just keep talking
  • Auto-exits to idle mode after 30s silence

Interruption

Say wake word during TTS playback to interrupt:

# Assistant is speaking...
You: "Hey Jarvis!"  # Interrupts immediately
Assistant: *stops speaking, listens for new command*

Exit Modes

Normal exit (say keyword):

You: "Goodbye Jarvis"
→ Plays exit sound, graceful shutdown

Immediate exit (say "exit now"):

You: "Exit now"
→ Immediate shutdown, no confirmation

Fuzzy match exit:

You: "Could you please exit?"
→ Detects "exit" keyword, triggers shutdown

API exit:

curl -X POST http://localhost:17890/shutdown

Code Examples

Custom ASR Integration

from src.asr_sense_voice import ASRSenseVoice

# Initialize SenseVoice ASR
asr = ASRSenseVoice(
    model_dir="models/sherpa-onnx-sense-voice-zh-en-ja-ko-yue-2024-07-17",
    language="auto",
    use_itn=True,
    num_threads=4
)

# Real-time recognition
recognizer = asr.create_recognizer()
while audio_available:
    samples = read_audio_samples()
    recognizer.accept_waveform(16000, samples)
    if recognizer.is_ready():
        recognizer.decode_stream()
    result = recognizer.get_result()
    if result.text:
        print(f"Recognized: {result.text}")

Custom TTS with Metallic Effect

from src.assistants.jarvis.tts_piper import TTSPiper

# Initialize Piper TTS with metallic filters
tts = TTSPiper(
    model_path="models/vits-piper-en_US-lessac-medium/en_US-lessac-medium.onnx",
    tokens_path="models/vits-piper-en_US-lessac-medium/tokens.txt",
    data_dir="models/vits-piper-en_US-lessac-medium/espeak-ng-data",
    metallic_config={
        "enabled": True,
        "af": {
            "aecho": "0.8:0.85:20|45|70:0.45|0.32|0.22",
            "bass": "g=4:f=110",
            "treble": "g=2.5"
        }
    }
)

# Synthesize speech
audio_samples = tts.synthesize("Good morning, Sir. All systems operational.")
# Returns numpy array, ready for playback via sounddevice

OpenClaw Bridge Integration

from src.openclaw_bridge_websocket import OpenClawBridgeWebSocket

# Initialize bridge
bridge = OpenClawBridgeWebSocket(
    gateway_url="ws://localhost:13579",
    agent_id="jarvis",
    device_id="voice_assistant"
)

# Connect (auto-loads keypair from ~/.openclaw/devices/)
await bridge.connect()

# Send message
async for response_chunk in bridge.send_message(
    text="What's the weather today?",
    conversation_id="conv_123"
):
    print(response_chunk)  # Streaming LLM response

Speaker Verification

from src.speaker_verification import SpeakerVerification

# Initialize
sv = SpeakerVerification(
    model_path="models/3dspeaker_speech_eres2net_base_sv_zh-cn_3dspeaker_16k.onnx",
    threshold=0.65
)

# Enroll speaker
for i in range(3):
    audio = record_audio()  # numpy array, 16kHz
    sv.add_enrollment_sample(audio)
sv.finalize_enrollment()

# Verify during wake
audio = record_audio()
is_valid, score = sv.verify(audio)
if not is_valid:
    print(f"Speaker verification failed: {score:.3f}")

Hot Word Optimization

# In assistants.json
{
  "jarvis": {
    "asr_config": {
      "provider": "sense_voice",
      "hotwords_config": {
        "enabled": true,
        "words": ["Jarvis", "OpenClaw", "API", "localhost"],
        "boost_score": 2.0
      }
    }
  }
}

Hotwords get priority during decoding, improving recognition accuracy for domain-specific terms.

API Reference

HTTP Endpoints

Status:

GET http://localhost:17890/status
Response: {"status": "idle" | "listening" | "thinking" | "speaking"}

Shutdown:

POST http://localhost:17890/shutdown
Response: {"message": "Shutdown initiated"}

HUD Control (TCP)

HUD overlay listens on localhost:17889:

import socket

def send_hud_command(command: dict):
    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    sock.connect(("localhost", 17889))
    sock.sendall(json.dumps(command).encode() + b"\n")
    sock.close()

# Set state
send_hud_command({"type": "set_state", "state": "listening"})

# Set audio level
send_hud_command({"type": "set_audio_level", "level": 0.75})

# Display text
send_hud_command({"type": "set_text", "text": "Good morning, Sir."})

Common Patterns

Add a New Assistant Role

  1. Create OpenClaw Agent:
openclaw agents add my-assistant
  1. Add to assistants.json:
{
  "my-assistant": {
    "id": "my-assistant",
    "name": "My Assistant",
    "wake_words": ["hey assistant"],
    "exit_keywords": ["bye"],
    "asr_config": { "provider": "sense_voice", ... },
    "tts_config": { "provider": "melo_tts", ... },
    "sounds": { ... },
    "hud_config": { ... }
  }
}
  1. Create wake word file:
# models/sherpa-onnx-kws-zipformer-wenetspeech-3.3M-2024-01-01/my-assistant.txt
嘿/助/手
h ey1 / assistant
  1. Add sound assets:
assets/sounds/my-assistant/
  ├── wake.wav
  ├── listen_start.wav
  ├── listen_end.wav
  └── exit.wav
  1. Configure System Prompt in OpenClaw Web UI for my-assistant agent.

Customize TTS Voice

Switch to MeloTTS (Chinese):

{
  "tts_config": {
    "provider": "melo_tts",
    "model_dir": "models/vits-melo-tts-zh_CN",
    "language": "ZH",
    "speaker_id": 0
  }
}

Disable metallic effect (Jarvis):

{
  "tts_config": {
    "metallic": {
      "enabled": false
    }
  }
}

Adjust Speaker Verification Threshold

Lower threshold = stricter verification:

{
  "speaker_verification": {
    "threshold": 0.70,  // Default: 0.65
    "enroll_samples": 5  // More samples = better accuracy
  }
}

Troubleshooting

"pairing required" Error

Symptom: Wake word triggers, but WebSocket connect fails with pairing required: device is not approved yet.

Fix: Follow Device Pairing steps above.

Wake Word Not Detected

  1. Check microphone: Ensure default input device is correct
  2. Check keywords file: Verify jarvis.txt or lin-meimei.txt exists and contains phonetic transcription
  3. Lower KWS threshold:
{
  "kws_config": {
    "threshold": 0.3  // Default: 0.5
  }
}

ASR Recognition Errors

Enable hotwords:

{
  "asr_config": {
    "hotwords_config": {
      "enabled": true,
      "words": ["Jarvis", "OpenClaw", "your", "domain", "terms"]
    }
  }
}

Switch ASR model:

{
  "asr_config": {
    "provider": "zipformer",  // Try Zipformer instead of SenseVoice
    "model_dir": "models/sherpa-onnx-zipformer-en-2023-06-26"
  }
}

TTS Playback Issues

Check audio device:

import sounddevice as sd
print(sd.query_devices())  # List available devices

Force device in main.py:

sd.default.device = 1  # Use device index from query_devices()

HUD Not Showing

  1. Check Flutter overlay is running:
cd assistant_overlay
flutter run -d windows  # or macos, linux
  1. Verify TCP port:
netstat -an | grep 17889  # Should show LISTENING
  1. Disable HUD (fallback):
{
  "hud_config": {
    "enabled": false
  }
}

FFmpeg Metallic Effect Not Working

Symptom: Jarvis voice sounds normal (no metallic effect).

Fix:

  1. Check imageio-ffmpeg is installed:
pip show imageio-ffmpeg
  1. Verify metallic config is enabled:
{
  "tts_config": {
    "metallic": {
      "enabled": true  // Must be true
    }
  }
}
  1. Check logs for FFmpeg detection messages.

High CPU Usage

Reduce ASR threads:

{
  "asr_config": {
    "num_threads": 2  // Default: 4
  }
}

Disable HUD:

{
  "hud_config": {
    "enabled": false
  }
}

Environment Variables

# .env file
OPENCLAW_GATEWAY_URL=ws://localhost:13579  # OpenClaw WebSocket URL
LOG_LEVEL=INFO                             # DEBUG | INFO | WARNING | ERROR
FFMPEG_BIN=/custom/path/to/ffmpeg          # Optional: override FFmpeg path

Dependencies

Core Python packages:

  • sherpa-onnx: ASR/TTS/KWS models
  • sounddevice: Audio I/O
  • websockets: OpenClaw gateway connection
  • imageio-ffmpeg: FFmpeg for metallic TTS effect
  • numpy, librosa: Audio processing
  • fastapi, uvicorn: HTTP API
  • python-dotenv: Environment config

Models (download separately):

  • SenseVoice or Zipformer (ASR)
  • Piper, VITS, or MeloTTS (TTS)
  • KWS Zipformer (wake word)
  • 3D-Speaker ERes2Net (speaker verification)

Next Steps: After device pairing, say "Hey Jarvis" and ask a question. Check logs in console for ASR, LLM, and TTS pipeline flow.