Title :
Voice Encoding for the Space Shuttle Using Adaptive Delta Modulation
Author :
Schilling, Donald L. ; Garodnick, Joseph ; Vang, Harold A.
Author_Institution :
City College of New York, NY
fDate :
11/1/1978 12:00:00 AM
Abstract :
Two algorithms for voice encoding are described. One, the modified Abate, is a simplified version that is the type designed for the Space Shuttle. Waveforms of the response of the delta modulators to channel errors are given and performance data that shows the relationship between channel errors and word intelligibility are included. An analytic derivation yielding a comparison between PCM and adaptive delta modulation with respect to channel errors is also given.
Keywords :
Adaptive coding; Delta modulation, coding/decoding; Space Shuttle; Space-vehicle communications; Speech coding; Bit error rate; Bit rate; Delta modulation; Encoding; Error analysis; Logic; NASA; Phase change materials; Signal to noise ratio; Space shuttles;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOM.1978.1094003
