A. What I am trying to implement.

A web application allowing real-time speech recognition inside web browser (like this).

B. Technologies I am currently thinking of using to achieve A.

• JavaScript


• Node.js


• WebRTC


• Microsoft Speech API or Pocketsphinx.js or something else (cannot use Web Speech API)

C. Very basic workflow

1. Web browser establishes connection to Node server (server acts as a signaling server and also serves static files)


2. Web browser acquires audio stream using getUserMedia() and sends user's voice to Node server


3. Node server passes audio stream being received to speech recognition engine for analysis


4. Speech recognition engine returns result to Node server


5. Node server sends text result back to initiating web browser


6. (Node server performs step 1 to 5 to process requests from other browsers)

D. Questions

1. Would Node.js be suitable to achieve C?


2. How could I pass received audio streams from my Node server to a speech recognition engine running separately from the server?


3. Could my speech recognition engine be running as another Node application (if I use Pocketsphinx)? So my Node server communicates to my Node speech recognition server.