THE RATING OF VARIABLE SLOPE DELTA AND DELTA SIGMA MODULATING SYSTEMS IN A FREE CONVERSATION TEST USING THE REFERENCE SPEECH LINK,
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 Kb/s 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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1968
- Accession Number
- AD0686339
Entities
People
- L. S. Butler