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DIRECTORATE OF TELECOMMUNICATIONS
PUBLICATIONS
Technical Memorandum TM47 - Assessment of Filter Characteristics for Subliminal Digital Data Transmission in Speech Communication Channels
Author: J.B. Hollis
page 1 of 1
Introduction
This document was produced in January 1980 by John Hollis.
The memorandum outlines the results of a brief project to look at the most suitable section of the speech band to use for data signals and to get some appreciation of the characteristics of the required stop band filter.
Credits
This document was kindly provided by Mike Brain and is Crown Copyright.
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