SINGLE-CHANNEL VOICE-RESPONSE-SYSTEM PROGRAM DOCUMENTATION. VOLUME I. SYSTEM DESCRIPTION

This report documents the design and implementation of a Voice Response System (VRS) using Adaptive Differential Pulse Code Modulation (ADPCM) voice coding. Implemented on a Digital Equipment Corporation PDP-11/20,R this VRS system supports a single audio-output channel. Vocabulary size is limited to 900 words or phrases. Input to the system consists of text messages or sentences in ASCII format transmitted to the 11/20 through a 300-baud asynchronous interface. A preliminary design for a VRS for 10 channels is reported.

• Supplemental Notes:
  • See also Volume 2, AD-A051 745.
• Corporate Authors:

  Input Output Computer Services Incorporated

  Cambridge, MA  United States 
• Publication Date: 1977-12

Media Info

• Pagination: 39 p.

Subject/Index Terms

• TRT Terms: Adaptive control; Coding systems; Communication systems; Communications; Computer program documentation; Computer programming; Definitions; Flow charts; Messages (Communications); Pulse code modulation; Real time control; Real time data processing
• Old TRIS Terms: Adaptive communications; Differential pulse code modulation; Flow charting; Machine coding; Message processing; Multichannel communications; Response; Vocabulary; Vocoders
• Subject Areas: Data and Information Technology;

Filing Info

• Accession Number: 00175467
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: FAA-RD-77-177-1
• Contract Numbers: DOT-TSC-1107-1
• Files: NTIS
• Created Date: May 31 2002 12:00AM