Magazine Article

Speech Acquisition and Automatic Speech Recognition for Integrated Spacesuit Audio Systems

TBMG-8700

11/01/2010

Abstract
Content

A voice-command human-machine interface system has been developed for spacesuit extravehicular activity (EVA) missions. A multichannel acoustic signal processing method has been created for distant speech acquisition in noisy and reverberant environments. This technology reduces noise by exploiting differences in the statistical nature of signal (i.e., speech) and noise that exists in the spatial and temporal domains. As a result, the automatic speech recognition (ASR) accuracy can be improved to the level at which crewmembers would find the speech interface useful. The developed speech human/machine interface will enable both crewmember usability and operational efficiency. It can enjoy a fast rate of data/text entry, small overall size, and can be lightweight. In addition, this design will free the hands and eyes of a suited crewmember.

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Citation
"Speech Acquisition and Automatic Speech Recognition for Integrated Spacesuit Audio Systems," Mobility Engineering, November 1, 2010.
Additional Details
Publisher
Published
Nov 1, 2010
Product Code
TBMG-8700
Content Type
Magazine Article
Language
English