41774259081336_page_72

41774259081336 | page 72 | https://thedailydialectics.com/pdfs/FIOA/41774259081336/41774259081336.pdf

106 Page: 67 Delta Modulation Systems. (c) HALLMARK IT. Single channel, self-synchronous push-to-talk speech security ‘equipment. Speech is sampled at 33.3 Kee rate and is quantized by a delta modulation scheme, Noise is injected in parallel with the speech inpute Encypherment is provided by three…