DocumentCode
764514
Title
Hybrid Companding Delta Modulation
Author
Un, Chong Kwan ; Lee, Hwang Soo ; Song, Joo Seok
Author_Institution
Korea Adv. Inst. of Sci. and Technol., Seoul, Korea
Volume
29
Issue
9
fYear
1981
fDate
9/1/1981 12:00:00 AM
Firstpage
1337
Lastpage
1344
Abstract
We present a reasonably complete account of an improved adaptive delta modulation (ADM) system called hybrid companding delta modulation (HCDM). The HCDM system that is far superior to continuously variable slope DM (CVSD) or constant factor DM (CFDM) is advantageous, particularly for speech coding. It employs both syllabic and instantaneous companding schemes. Performance analysis of the system has been done and verified by computer simulation. In getting the mathematical formula for HCDM granular noise, a new method based on amplitude distribution is proposed. Optimization of the system parameter values by simulation is also discussed. In addition, an efficient method of hardware implementation is considered.
Keywords
Delta modulation; Communications Society; Data communication; Delta modulation; Dynamic range; Modulation coding; Phase change materials; Pulse modulation; Quantization; Speech coding; Time factors;
fLanguage
English
Journal_Title
Communications, IEEE Transactions on
Publisher
ieee
ISSN
0090-6778
Type
jour
DOI
10.1109/TCOM.1981.1095150
Filename
1095150
Link To Document