An Experimental Delta Modulation System

An experimental delta pulse code modulation system is discussed. The results show that uncompanded delta pulse code modulation is more complex than standard pulse code modulation but yields no additional increase in signal-toquantizing noise. (Author).

Delta Modulation Systems.- Some Existing Approaches of Linear Arithmetic Operations on Binary Delta Modulated Pulse Stream.- Basic Ternary Logic Circuits.- Arithmetic Operations on Multi-Valued Delta Modulation Systems.- Nonlinear Arithmetic Operations on Delta Modulated Pulse Stream.- Mixed Processing of Delta Modulated Pulse Stream.- Decoding of First Order Delta-Sigma Sequences.- PCM - Delta-Sigma-Mu Converters.- Stochastic Processing using Delta-Sigma-Mu.- Measurements Based on Delta Modulation.- Delta-Sigma Compander Circuits

An extensive investigation of delta modulation techniques for encoding pictorial data was made. The objective was to determine the parameters of delta modulation systems for various image communication applications by (1) system analysis, (2) computer simulation, and (3) experimentation. The analysis of delta modulation techniques includes one-bit and two-bit systems with both linear and exponential integration. Computer simulations of delta modulation logics conducted were (1) one-bit with linear and exponential integration, (2) two-bit with linear and exponential integration, and (3) most importantly, data-link noise with mentioned systems and also pcm. Images of these simulations are presented for evaluation. An experimental two-bit delta modulation encoder with a sampling rate of 50 mc was constructed and tested. A table of the key parameters of pcm and delta modulation systems is presented. Using this table and the images, the image communication system designer can readily choose the best technique and combination of parameters to fulfill his particular application. (Author).

This book is intended for students and professionals who are interested in the field of digital signal processing of delta-sigma modulated sequences. The overall focus is on the development of algorithms and circuits for linear, non-linear, and mixed mode processing of delta-sigma modulated pulse streams. The material presented here is directly relevant to applications in digital communication, DSP, instrumentation, and control.