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Two-bit instantaneously adaptive delta modulation for p.c.m. encoding

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.
0033-7722
187-197
Sakane, F.T.
0c5a1e65-bb4f-4f3f-8624-7044d286e22a
Steele, R.
7035a3e5-8a4c-434b-a105-46fe2d63d5c3
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), 187-197. (doi:10.1049/ree.1978.0028).

Record type: Article

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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More information

Published date: April 1978
Additional Information: Awarded Marconi Premium
Organisations: Electronics & Computer Science

Identifiers

Local EPrints ID: 252253
URI: https://eprints.soton.ac.uk/id/eprint/252253
ISSN: 0033-7722
PURE UUID: 12113ee7-0aab-4330-b148-c4af6803e8f7

Catalogue record

Date deposited: 17 Jan 2000
Last modified: 12 Nov 2018 17:31

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Contributors

Author: F.T. Sakane
Author: R. Steele

University divisions

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