Two-bit instantaneously adaptive delta modulation for p.c.m. encoding
Two-bit instantaneously adaptive delta modulation for p.c.m. encoding
A two-bit instantaneously adaptive delta modulator intended for application as the input stage of a code converter is presented. Its step adaptation algorithm is derived from that used in high information delta modulation (HIDM). The improvement in performance relative to the HIDM system is gained by its ability to reduce overshoots and respond faster to signal variations. A hardware model that allows the comparison between these delta modulators is described and results of measurements on narrow-band noise and sinewave input signals are presented. Two possible structures to generate p.c.m. signals by code conversion are described and computer simulation results presented for one of them.
187-197
Sakane, F.T.
0c5a1e65-bb4f-4f3f-8624-7044d286e22a
Steele, R.
7035a3e5-8a4c-434b-a105-46fe2d63d5c3
April 1978
Sakane, F.T.
0c5a1e65-bb4f-4f3f-8624-7044d286e22a
Steele, R.
7035a3e5-8a4c-434b-a105-46fe2d63d5c3
Sakane, F.T. and Steele, R.
(1978)
Two-bit instantaneously adaptive delta modulation for p.c.m. encoding.
Radio and Electronic Engineer, 48 (4), .
(doi:10.1049/ree.1978.0028).
Abstract
A two-bit instantaneously adaptive delta modulator intended for application as the input stage of a code converter is presented. Its step adaptation algorithm is derived from that used in high information delta modulation (HIDM). The improvement in performance relative to the HIDM system is gained by its ability to reduce overshoots and respond faster to signal variations. A hardware model that allows the comparison between these delta modulators is described and results of measurements on narrow-band noise and sinewave input signals are presented. Two possible structures to generate p.c.m. signals by code conversion are described and computer simulation results presented for one of them.
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Published date: April 1978
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Electronics & Computer Science
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Local EPrints ID: 252253
URI: http://eprints.soton.ac.uk/id/eprint/252253
ISSN: 0033-7722
PURE UUID: 12113ee7-0aab-4330-b148-c4af6803e8f7
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Date deposited: 17 Jan 2000
Last modified: 14 Mar 2024 05:18
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Author:
F.T. Sakane
Author:
R. Steele
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