New Ideas for Speech Recognition and Related Technologies

摘要

The ideas relating to the use of organ motion sensors for the purposes of speech recognition were first described by the author in spring 1994. During the past year, a series of productive collaborations have lead to demonstrations, new sensor ideas, and algorithmic descriptions of a large number of speech recognition concepts. This document summarizes the basic concepts of recognizing speech once organ motions have been obtained. Micro power radars and their uses for the measurement of body organ motions, such as those of the heart and lungs, have been demonstrated over the past two years. A series of experiments using these instruments on vocal organ motions resulted in observations of motions of vocal folds (i.e., cords), tongue, jaw, and related organs that are very useful for speech recognition and other purposes. These are reviewed in another paper. The purpose of this document is to review for the reader the basics ideas behind using electromagnetic wave scattering (i.e. radar scattering) from body organs to enhance speech recognition. The author reviews the principles of radar scattering from human organs, and then describes a series of speech recognition algorithms that have been devised in order to make possible the applications of the above described ideas to a wide range of sensor and user conditions. The report concludes with speculation on other applications of this technology.