METHOD AND APPARATUS FOR TRANSMITTING SPEECH ACTIVITY IN DISTRIBUTED VOICE RECOGNITION SYSTEMS.

摘要

A system and method for transmitting speech activity in a distributed voice recognition system. The distributed voice recognition system includes a local VR engine in a subscriber unit (102) and a server VR engine on a server (160). The local VR engine comprises an advanced feature extraction (AFE) module (104) that extracts features from a speech signal, and a voice activity detection (VAD) module (106) that detects voice activity within a speech signal. The combined results from the VAD module (106) and feature extraction module (104) are provided in an efficient manner to a remote device, such as a server (160), in the form of advanced front end features, thereby enabling the server (160) to process speech segments free of silence regions. Various aspects of efficient speech segment transmission are disclosed.