Improvement of the Narrowband Linear Predictive Coder. Part 2. Synthesis Improvements.

Abstract

The narrowband linear predictive coder (LPC) is widely used in both civilian and military applications. Yet in spite of improvements over the years, it is still not universally accepted by general users. This report examines the weakness of the LPC synthesizer, particularly the excitation signal. Diagnostic Acceptability Measure tests show an increase up to five points. This can be achieved without altering the speech sampling rate, the frame rate, or the parameter coding.

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Document Details

Document Type
Technical Report
Publication Date
Jun 11, 1984
Accession Number
ADA145031

Entities

People

  • G. S. Kang
  • S. E. Everett

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Space

DTIC Thesaurus Topics

  • Acceptability
  • Background Noise
  • Bandwidth
  • Classification
  • Consonants
  • Data Rate
  • Filters
  • Filtration
  • Frequency
  • Human Factors Engineering
  • Larynx
  • Probability
  • Probability Density Functions
  • Resonant Frequency
  • Signal Generators
  • Speech Quality
  • Test And Evaluation

Fields of Study

  • Engineering

Readers

  • Speech Processing/Speech Recognition.
  • Systems Analysis and Design