Accession Number:

AD0686339

Title:

THE RATING OF VARIABLE SLOPE DELTA AND DELTA SIGMA MODULATING SYSTEMS IN A FREE CONVERSATION TEST USING THE REFERENCE SPEECH LINK,

Descriptive Note:

Corporate Author:

SIGNALS RESEARCH AND DEVELOPMENT ESTABLISHMENT CHRISTCHURCH (ENGLAND)

Personal Author(s):

Report Date:

1968-10-01

Pagination or Media Count:

26.0

Abstract:

This report describes a free conversation opinion test designed on a statistical basis to assess the performance of delta sigma and variable slope delta modulating equipments. Tests were made at digit rates of 12 and 19.2 Kbs and with randomly distributed digital errors at constant density of 5 and 10 introduced into the digit stream. The delta sigma equipments in each case were rated higher on the sensitivity-noise scale than the VSD equipments under comparable conditions. Author

Subject Categories:

  • Voice Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE