Voice ICR Practice

Listen to the Morse Code:

Auto-listening enabled | Manual: Click or Ctrl+Space

💡 Tip: Say letters clearly (e.g., "Em" for M, "Kay" for K) or use phonetic alphabet

🎤 Microphone Level: Auto-Gain Active

Auto-Gain Speed: 2.0s

🟢 Green = Optimal | 🟡 Yellow = Speak Louder | 🔴 Red = Too Loud | ⚫ Gray = Too Quiet

⚠️ Note: Auto-Gain may reduce speech recognition accuracy. Disable if experiencing recognition issues.

Ready to start

Green (<2s) Yellow (2-3s) Orange (3-4s) Red (>4s)

🎯 Goal: Get all characters to Green level to pass lesson!

Automatic Flow: App plays Morse code → automatically starts listening → processes your response → moves to next character
Just Speak: Simply say the character you heard immediately after the code finishes
Timing: Response time is measured from when the code finishes playing
Progress: When all characters reach Green level (<2s response time), the lesson auto-advances
Manual Options: If auto-voice fails, use the voice button or type your answer
Koch Method: Start with Lesson 1 (K, M) and progress sequentially
Replay: Click the 🔊 button to hear the code again

Browser Support: This application requires a modern browser with Web Speech API support (Chrome, Edge, Safari).

Troubleshooting: If you hear no sound or microphone doesn't work:

Make sure your browser allows microphone access (check the lock icon in the address bar)
Use the "Test Audio" and "Test Microphone" buttons to diagnose issues
Try refreshing the page if permissions were denied initially
For HTTPS sites: ensure your connection is secure