DocumentCode :
753971
Title :
Subjective Tests of a Companded, Frequency Modulated, Single Channel Per Carrier Communication System
Author :
Rogers, James C. ; Madigan, R.J. ; Elliott, Jerry C.
Author_Institution :
University of Alaska-Anchorage, AK
Volume :
26
Issue :
6
fYear :
1978
fDate :
6/1/1978 12:00:00 AM
Firstpage :
917
Lastpage :
922
Abstract :
Subjective tests were performed to evaluate components of an FM-SCPC communications system including a syllabic compandor, a VOX circuit, and a shallow emphasis network. The subjective improvements in the signal-to-noise ratio were determined for these components separately and in combination. Tests of the syllabic compandor were conducted at four talker levels and at two values of C/kT for the SCPC equipment. Further listening tests were conducted to evaluate the advantage produced by (a) the VOX alone, (b) the VOX operating with the compandor, and (c) the VOX, compandor and a shallow emphasis network. Group distributions of compandor advantages are presented for use in designing SCPC systems.
Keywords :
Companding; FM communication; Satellite communication, multiaccess; Speech transmission; Bandwidth; Displays; Error analysis; Fading; Frequency modulation; Modems; Performance analysis; System testing; White noise; Wideband;
fLanguage :
English
Journal_Title :
Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
0090-6778
Type :
jour
DOI :
10.1109/TCOM.1978.1094140
Filename :
1094140
Link To Document :
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