Speech Digitization by LPC Estimation Techniques

Abstract

This project was established to study the relevance of linear predictive coding (LPC) estimation techniques for the development of a practical, real-time system for transmitting digitized voice signals. These techniques had been shown to provide excellent quality transmission at modest bit rates when simulated on large-scale digital computers. The goal was to determine how they can be used in packet communication systems with smaller computers. The report discusses the following topics: Pitch-synchronous analysis and synthesis techniques; Time-domain pitch extraction; Timing requirements for high quality reproduction; LPC synthesizer excitation; Asynchronous transmission of LPC parameters.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1974
Accession Number
ADA001931

Entities

People

  • D. T. Magill
  • D. W. Ellis
  • E. J. Craighill

Organizations

  • SRI International

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Algorithms
  • Coding
  • Communication Channels
  • Communication Systems
  • Computer Communications
  • Computer Programming
  • Computers
  • Data Compression
  • Databases
  • Detectors
  • Information Science
  • Multiple Access
  • Packet Switching
  • Power Spectra
  • Speech Compression
  • Voice Communications
  • Waveforms

Fields of Study

  • Engineering

Readers

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