Distributed Speech Recognition Using One Way Communication

Abstract

A speech recognition client sends a speech stream and control stream in parallel to a server-side speech recognizer over a network. The network may be an unreliable, low-latency network. The server-side speech recognizer recognizes the speech stream continuously. The speech recognition client receives recognition results from the server-side recognizer in response to requests from the client. The client may remotely reconfigure the state of the server-side recognizer during recognition.

What is claimed is: 
     
         2 . A computer-implemented method comprising:
 (A) at a speech recognition server:
 (A)(1) receiving a speech stream and a control stream from a client; 
 (A)(2) using an automatic speech recognition engine in a first configuration state to recognize a first portion of the speech stream and thereby to produce a first speech recognition result; 
   (B) at the speech recognition server,
 (B)(1) analyzing a first control message in the control stream to determine whether the first speech recognition result satisfies a first predetermined criterion specified by the control stream; 
 (B)(2) waiting until the automation speech recognition engine has been reconfigured before continuing to (C); and 
   (C) at the speech recognition server, responsive to receiving a second control message, using the automatic speech recognition engine in a second configuration state to recognize a second portion of the speech stream and thereby to produce a second speech recognition result.