DocumentCode
1445105
Title
Amplitude-controlled two-loop adaptive delta modulator
Author
Chakravarthy, C.V. ; Faruqui, M.N.
Author_Institution
Indian Institute of Technology, Department of Electronics & Electrical Communication Engineering, Kharagpur, India
Volume
126
Issue
4
fYear
1979
fDate
4/1/1979 12:00:00 AM
Firstpage
285
Lastpage
290
Abstract
In this paper an adaptive delta modulator (a.d.m.) is proposed which derives its companding information from the number of transitions from 0 to 1 and 1 to 0 that occur in the digital output. The companding characteristics and the s.n.r. have been analysed. The details of an experimental coder built in the laboratory are given along with the performance. At 32 kbit/s, the s.n.r. for a 800 Hz signal is >26 dB for an input variation of 30 dB. It compares well with other similar a.d.m. coders.
Keywords
amplitude modulation; code convertors; delta modulation; modulators; adaptive delta modulator; amplitude controlled; coder; companding characteristics; digital output; signal to noise ratio; two loop;
fLanguage
English
Journal_Title
Electrical Engineers, Proceedings of the Institution of
Publisher
iet
ISSN
0020-3270
Type
jour
DOI
10.1049/piee.1979.0075
Filename
5253832
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