Accession Number:

AD0742441

Title:

An Automatic Speech Recognition System Using a Vocoder Input.

Descriptive Note:

Master's thesis,

Corporate Author:

AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING

Personal Author(s):

Report Date:

1972-03-01

Pagination or Media Count:

90.0

Abstract:

Speech recognition is accomplished by off-line machine processes based on visual pattern recognition techniques. The fundamental system uses digitized data output from a KY-585 Vocoder, and two-dimensional discrete Fourier transforms with spatial frequency filters.. Two male speakers generated data for the computer processes which include a speaker adaptation routine. A relation to the human physiology is maintained through an elementary model. For a 39 word vocabulary, recognition rates reached 92 for the single speaker process, and 79 for an either-of-two-speaker process. Departures from visual pattern recognition techniques are introduced and proven effective. Author

Subject Categories:

  • Voice Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE