NASA NTRS · 19710000316
Multifunction audio digitizer for communications systems
Abstract
Digitizer accomplishes both N bit pulse code modulation /PCM/ and delta modulation, and provides modulation indicating variable signal gain and variable sidetone. Other features include - low package count, variable clock rate to optimize bandwidth, and easily expanded PCM output.
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Monford, L. G., Jr.. 1971-08-01. Multifunction audio digitizer for communications systems. https://ntrs.nasa.gov/citations/19710000316
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