Voice Mode

What is voice mode?

Voice mode lets you have a real-time spoken conversation with a Theostack assistant. Instead of typing, you speak your question and hear a spoken response — while still getting source-grounded answers from the theological library.

This is useful for hands-free research, brainstorming sermon ideas while driving, or simply thinking out loud about a passage.

Starting a voice session

1. Open the Chat page.
2. Click the microphone icon near the chat input.
3. Grant microphone permission when your browser asks.
4. Start speaking. The assistant will respond in real time.

Your browser handles echo cancellation automatically — no headphones required in most environments.

Tips for good results

• Speak naturally. You don't need to use search keywords. Ask questions the way you'd ask a colleague.
• Ask follow-up questions. Voice sessions maintain context, so you can build on previous answers.
• Be specific. "What does Calvin say about predestination in the Institutes?" will get better results than "Tell me about predestination."
• Pause between thoughts. The assistant uses voice activity detection to know when you've finished speaking.

Known limitations

• Browser support: Voice mode works best in Chrome, Edge, and Safari. Firefox support may vary.
• Microphone permissions: If voice mode doesn't start, check that your browser has microphone access enabled for theostack.com.
• Environment: Background noise can interfere with voice activity detection. A reasonably quiet environment works best.
• Source display: Source cards appear after the response, not during the spoken answer.

Ending a session

Click the microphone icon again or close the voice interface to end the session. Your conversation transcript is saved to your history.