Narrowband Integrated Voice Data System Based on the 2400-b/s LPC (Linear Predictive Coder).

Abstract

This report present a narrowband integrated voice/data systems which is achieved by modifying the Government-standard linear predictive coder (LPC) operation at 2400 bits per second (b/s) to transmit both speech and digital data simultaneously. The presence of the digital data in the speech bit-stream, however, does not cause operational incompatibility with other Government-standard LPCs which dont have this capability. Since the LPC will be widely deployed in tactical platforms to support command and control of the armed forces, the capability of transmitting simple graphics or typed messages along with continuous conversation would enhance the effectiveness of tactical voice communications. According to our experimentation, digital data up to approximately 75 b/s can be transmitted during continuous conversation without deteriorating the intelligibility of the LPC processed speech. Keywords include: Narrowband LPC, Integrated voice/data systems, and Simultaneous voice/data transmission.

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Document Details

Document Type
Technical Report
Publication Date
Dec 30, 1985
Accession Number
ADA163158

Entities

People

  • George S. Kang

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • C4I
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Audiovisual Aids
  • Classification
  • Coders
  • Coding
  • Command And Control
  • Data Rate
  • Data Transmission
  • Digital Data
  • Frequency
  • Governments
  • Human Factors Engineering
  • Intelligibility
  • Reflection
  • Signal Processing
  • Spectra
  • Speech
  • Transmitting

Readers

  • Database Systems and Applications
  • Radio communications and signal processing.
  • Speech Processing/Speech Recognition.

Technology Areas

  • Fully Networked C3
  • Fully Networked C3 - Command and Control