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See ReSono Sine in Action
ReSono Sine brings real-time voice AI directly to the browser. Speak to OpenAI's Realtime API, Google's Gemini Live, or Whisper STT — with nothing more than a modern web browser and an internet connection.
ReSono Sine is a lightweight, browser-native voice AI platform. It connects users directly to the world's most powerful speech models — in real time, with sub-second latency — through any modern web browser.
No desktop app. No mobile download. No configuration complexity. Open a browser tab, authenticate, and start speaking. That's the entire onboarding.
Under the hood, Sine uses WebRTC for peer-to-peer media transport, WebSocket for real-time bidirectional streaming, and browser microphone APIs — all standards-based, all portable.
Works in Chrome, Firefox, Safari, Edge
Browser microphone access via WebRTC with automatic gain control and noise suppression for clean audio in any environment.
Streaming STT → AI inference → TTS output with minimal buffering. Conversational pacing that feels natural, not robotic.
AI responses stream as natural speech via high-quality text-to-speech. Hear the answer while it's still being generated.
Every session is archived with full transcripts and audio. Browse past conversations, search history, and get summaries on demand.
Switch between OpenAI Realtime, Whisper STT, and Google Gemini Live from a single interface. One platform, multiple AI engines.
Full HTTPS setup for iOS Safari camera/microphone access. Works on phones and tablets with a responsive, glassmorphic interface.
Navigate to the Sine platform in any modern browser. No account required to start — just open and go.
Complete a one-time browser authentication for microphone access. HTTPS is automatically configured for secure media streaming.
Select from OpenAI Realtime, Whisper STT, or Gemini Live via the voice mode dropdown. Configure behavioral prompts as needed.
Press the voice button and speak. The AI responds in real time. End the session at any moment or browse and resume past conversations.
Evaluate and compare AI voice models in real time. Perfect for researchers and developers exploring Realtime API capabilities.
Give teams a zero-friction way to query AI assistants during meetings, walks, or work-from-home scenarios — no app install needed.
Use ReSono Sine as the voice interaction backbone for other products — including our own Technician Workflow and IT Support platforms.
ReSono Sine relies exclusively on open web standards — WebRTC for media transport, WebSocket for signaling, and standard browser MediaDevices APIs for microphone access.
Authentication uses secure token exchange with browser access codes. HTTPS enforcement ensures microphone access works reliably across all platforms, including iOS Safari's strict security requirements.
Get in touch to see ReSono Sine in action or to discuss integrating it into your platform.