Microprocessor Realization of a Linear Predictive Vocoder

Abstract

A microprocessor realization for a linear predictive vocoder is presented. The goal was a low power. low cost, compact special purpose realization of a narrow band speech terminal. The resultant design is a general purpose two bus structure running at a 150 ns cycle time using as the basic signal processing element four of the AMD 2901 CPE chips. This basic structure is augmented by a four cycle multiplier to allow for sufficient signal processing power. The design concessions that mark the lpcm as a special purpose machine designed to be a speech terminal are: limited I/O, and limited memory. The present design requires 162 dual-in-line packages, dissipates less than 45 watts and occupies about 1/3 cubic foot.

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Document Details

Document Type
Technical Report
Publication Date
Sep 30, 1976
Accession Number
ADA033686

Entities

People

  • Edward M. Hofstetter
  • Joseph Tierney
  • Omar C. Wheeler

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

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

DTIC Thesaurus Topics

  • Algorithms
  • Circuits
  • Coding
  • Computer Programming
  • Computer Programs
  • Computer Science
  • Computers
  • Converters
  • Debugging
  • Detectors
  • Digital Data
  • Engineering
  • Fabrication
  • Instructions
  • Load Monitoring
  • Signal Processing
  • Simulators

Readers

  • Economics
  • Integrated Circuit Design and Technology.
  • Speech Processing/Speech Recognition.