Limited Continuous Speech Recognition by Phoneme Analysis.

Abstract

A Limited Continuous Speech Recognition system is developed based upon phoneme analysis. 16 Bandpass filters are used to obtain the frequency components of the input speech. The input speech is broken into packets of 40 milliseconds each. These packets are compared with phonemes in a template file by a differencing of frequency magnitudes. The resulting phoneme string representation of the input speech is compressed and compared with strings in a library file for discrete word recognition. For continuous speech recognition the phoneme string is analyzed a phoneme at a time to construct word sequences. The word string which best matches the input phoneme string is recognized as the word sequence. The system has an accuracy of about 94% for discrete word recognition and about 80% for continuous speech recognition. The vocabulary used is the digits zero to nine and point. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 08, 1983
Accession Number
ADA138021

Entities

People

  • A. Hussain

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Automatic Gain Control
  • Bandpass Filters
  • Dynamic Range
  • Electrical Engineering
  • Filters
  • Frequency
  • Frequency Response
  • Language
  • Low Pass Filters
  • Operating Systems
  • Plastic Explosives
  • Recognition
  • Spectrum Analyzers
  • Three Dimensional
  • Vocabulary
  • Word Recognition

Fields of Study

  • Computer science

Readers

  • Speech Processing/Speech Recognition.

Technology Areas

  • AI & ML
  • AI & ML - Machine Translation