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VoiceReact

VoiceReact is a real-time voice detection system that lets game characters react to player speech. Perfect for horror games where enemies hear you scream, stealth games with voice-based detection, and voice-controlled gameplay mechanics.

Use Cases

Horror Games

  • Monsters hunt players who make noise
  • Enemies react to screams and shouts
  • Create tension through forced silence

Stealth Games

  • Guards detect voice and investigate
  • Quiet speech for team coordination
  • Volume-based detection ranges

Multiplayer

  • Voice activity indicators
  • Proximity-based voice detection
  • Network voice state synchronization

Puzzle & Interactive

  • Voice-controlled mechanics
  • Volume-based triggers
  • Speech detection puzzles

Key Features

Simple Integration

Add voice detection to your game in minutes. Three core components:

  • VoiceReactController - Detects player speech
  • VoiceListener - Makes enemies hear the player
  • VoiceReactManager - Coordinates all listeners efficiently

Flexible Detection

Choose sensitivity presets or customize thresholds:

  • Very Sensitive - Horror games, detect whispers
  • Balanced - General gameplay
  • Less Sensitive - Noisy environments, require clear speech

Performance Optimized

  • Throttled listener updates (30Hz default)
  • Skip updates when player is silent
  • Efficient batch processing for 50+ listeners

Audio Source Options

  • Unity Microphone - Built-in, works everywhere
  • Dissonance VoIP - Use existing voice chat as input
  • Custom Providers - Integrate any audio source

Networking Ready

Generic networking hooks work with:

  • Netcode for GameObjects
  • Mirror
  • Photon (PUN2, Fusion)
  • Fish-Net
  • Any custom solution

Threading Safe

Background audio processing with automatic main thread marshalling for Unity API calls.

Quick Example

using Peek.VoiceReact;
using UnityEngine;
 
public class EnemyAI : MonoBehaviour
{
    private VoiceListener listener;
 
    void Start()
    {
        listener = GetComponent<VoiceListener>();
        listener.OnPlayerHeard.AddListener(OnHeardPlayer);
    }
 
    void OnHeardPlayer(Vector3 position, float volume)
    {
        // Player made noise - investigate their location
        Debug.Log($"Heard player at {position} with volume {volume} dB");
        InvestigatePosition(position);
    }
}

System Requirements

  • Unity 2021.3 or newer
  • Windows, macOS, Linux, iOS, Android
  • Microphone input device
  • Optional: Dissonance VoIP for multiplayer voice chat integration

What’s Next?

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Performance & OptimizationAPI Reference