Download or read book Delta Modulation Digital Filtering Techniques written by Howard E. Nichols and published by . This book was released on 1975 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effort has demonstrated the feasibility and practicality of several computationally efficient procedures for simplifying the digital processing of Delta Modulation encoded signals. Design techniques for transversal filters having tap weights quantized to one bit were developed and evaluated. Techniques for direct conversion of CVSD encoded signals to PCM were developed and implemented on a 16-bit fixed-point programmable processor providing realtime computation.
Download or read book Digital Filters Using Delta Modulation written by Alan Brocklehurst and published by . This book was released on 1973 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Look Ahead Based Sigma Delta Modulation written by Erwin Janssen and published by Springer Science & Business Media. This book was released on 2011-04-02 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this book is to expand and improve upon the existing knowledge on discrete-time 1-bit look-ahead sigma-delta modulation in general, and to come to a solution for the above mentioned specific issues arising from 1-bit sigma-delta modulation for SA-CD. In order to achieve this objective an analysis is made of the possibilities for improving the performance of digital noise-shaping look-ahead solutions. On the basis of the insights obtained from the analysis, several novel generic 1-bit look-ahead solutions that improve upon the state-of-the-art will be derived and their performance will be evaluated and compared. Finally, all the insights are combined with the knowledge of the SA-CD lossless data compression algorithm to come to a specifically for SA-CD optimized look-ahead design.
Download or read book Adaptive Delta Modulation written by Dimitrios Panos Prezas and published by . This book was released on 1978 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Decimation Lowpass Filters for Sigma Delta Modulators written by Rüdiger Kusch and published by diplom.de. This book was released on 2002-12-18 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inhaltsangabe:Abstract: The purpose of this thesis is to compare several filter topologies used for the decimation of sigma-delta modulated digital signals. The goal is to present optimized filter architectures with regard to an efficient VLSI implementation. A fifth-order 1-bit sigma-delta modulator using local feedback techniques will be considered as the front-end A/D converter. The subsequent digital filter reduces the sampling rate by a factor of 32. The decimation filter must guarantee a narrow transition band between 0.5 and 0.55 and stopband attenuation of 100dB. Chapter 1 provides a brief introduction into the principles of digital signal processing. The considerations are focused on FIR filters due to the requirements for acoustic applications. Chapter 2 illustrates the proposed overall structure and the design flow. The objective of chapter 3 is to present the principles of oversampling data converters using sigma-delta techniques. The 5V fifth-order SD-modulator with 90dB dynamic range (SNR+THD) will be presented, which has been fabricated in 1.2μm CMOS technology. For the sake of simplicity and robustness, a 1-bit quantizer will be used. Chapter 4 deals with typical hardware realizations of digital filters. Apart from the brute force implementation of the multirate filter with identical filters running in parallel, also the LUT-based approach for small filter orders will be presented. Due to the advantages of compact implementation, the bit-serial approach and the bit-serial multiplier are investigated in detail. In chapter 5 the straightforward one-stage multirate FIR filter will be introduced. To satisfy the specifications, a 4096 tap lowpass FIR filter will be designed. The influence of coefficient quantization is investigated and furthermore the block scaling method, to represent small values, is presented. The single-stage implementation becomes the more unattractive the higher the filter specifications are. Chapter 6, therefore, focuses the investigations on cascaded structures. The first stage is realized as a comb or sincK filter and decimates by a factor of 8 or 4. The frequently used conventional comb filter will be used but also a new architecture will be described. The new structure is based on the conventional comb filter with filter sharpening techniques to improve the frequency behavior. The unavoidable passband droop must be compensated for by the following lowpass FIR filter. In order to compare several [...]
Download or read book Circuits and Systems Based on Delta Modulation written by Djuro G. Zrilic and published by Springer Science & Business Media. This book was released on 2006-03-30 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Introduction to Digital Filtering written by R. E. Bogner and published by Wiley-Interscience. This book was released on 1975 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction to sampling and z-transforms. General characteristics of digital filter. Synthesis of digital filters from continuous filter data. Direct synthesis of digital filters. Filters with finite duration impulse responses. Fourier transform methods. Frequency sampling filters. Frequency sampling filters with interger multipliers. Quantization effects in digital filters. Optimization techniques in digital filter design.
Download or read book Oversampling Delta Sigma Data Converters written by James C. Candy and published by John Wiley & Sons. This book was released on 1991-09-02 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: This now famous anthology brings together various aspects of oversampling methods and compares and evaluates design approaches. It describes the theoretical analysis of converter performances, the actual design of converters and their simulation, circuit implementations, and applications.
Download or read book Oversampled Delta Sigma Modulators written by Mücahit Kozak and published by Springer Science & Business Media. This book was released on 2007-05-08 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oversampled Delta-Sigma Modulators: Analysis, Applications, and Novel Topologies presents theorems and their mathematical proofs for the exact analysis of the quantization noise in delta-sigma modulators. Extensive mathematical equations are included throughout the book to analyze both single-stage and multi-stage architectures. It has been proved that appropriately set initial conditions generate tone free output, provided that the modulator order is at least three. These results are applied to the design of a Fractional-N PLL frequency synthesizer to produce spurious free RF waveforms. Furthermore, the book also presents time-interleaved topologies to increase the conversion bandwidth of delta-sigma modulators. The topologies have been generalized for any interleaving number and modulator order. The book is full of design and analysis techniques and contains sufficient detail that enables readers with little background in the subject to easily follow the material in it.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1988 with total page 1020 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Delta Sigma Modulators written by George I. Bourdopoulos and published by Imperial College Press. This book was released on 2003 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: This important book deals with the modeling and design of higher-order single-stage delta-sigma modulators. It provides an overview of the architectures, the quantizer models, the design techniques and the implementation issues encountered in the study of the delta-sigma modulators. A number of applications are discussed, with emphasis on use in the design of analog-to-digital converters and in frequency synthesis. The book is education- rather than research-oriented, containing numerical examples and unsolved problems. It is aimed at introducing the final-year undergraduate, the graduate student or the electronic engineer to this field. Contents: Analog to Digital Conversion; ou Modulators OCo Architectures; Single-Bit Single-Stage ou Modulators, Modeling and Design; Implementation of ou Modulators; Practical Limitations of ou Modulators; Stabilization and Suppression of Tones for the Higher-Order Single-Stage ou Modulators; Decimation, Interpolation and Converters; Applications. Readership: Final-year undergraduates; graduate students; electrical, electronic and systems engineers."
Download or read book An Improved FIR Delta Modulation Digital Filter written by Clarence L. Blanchfield and published by . This book was released on 1990 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Digital Signal Processing written by Li Tan and published by Academic Press. This book was released on 2013-01-21 with total page 893 pages. Available in PDF, EPUB and Kindle. Book excerpt: Digital Signal Processing, Second Edition enables electrical engineers and technicians in the fields of biomedical, computer, and electronics engineering to master the essential fundamentals of DSP principles and practice. Many instructive worked examples are used to illustrate the material, and the use of mathematics is minimized for easier grasp of concepts. As such, this title is also useful to undergraduates in electrical engineering, and as a reference for science students and practicing engineers. The book goes beyond DSP theory, to show implementation of algorithms in hardware and software. Additional topics covered include adaptive filtering with noise reduction and echo cancellations, speech compression, signal sampling, digital filter realizations, filter design, multimedia applications, over-sampling, etc. More advanced topics are also covered, such as adaptive filters, speech compression such as PCM, u-law, ADPCM, and multi-rate DSP and over-sampling ADC. New to this edition: MATLAB projects dealing with practical applications added throughout the book New chapter (chapter 13) covering sub-band coding and wavelet transforms, methods that have become popular in the DSP field New applications included in many chapters, including applications of DFT to seismic signals, electrocardiography data, and vibration signals All real-time C programs revised for the TMS320C6713 DSK Covers DSP principles with emphasis on communications and control applications Chapter objectives, worked examples, and end-of-chapter exercises aid the reader in grasping key concepts and solving related problems Website with MATLAB programs for simulation and C programs for real-time DSP
Download or read book Digital Filters Using MATLAB written by Lars Wanhammar and published by Springer Nature. This book was released on 2020-02-18 with total page 807 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook provides comprehensive coverage for courses in the basics of design and implementation of digital filters. The book assumes only basic knowledge in digital signal processing and covers state-of-the-art methods for digital filter design and provides a simple route for the readers to design their own filters. The advanced mathematics that is required for the filter design is minimized by providing an extensive MATLAB toolbox with over 300 files. The book presents over 200 design examples with MATLAB code and over 300 problems to be solved by the reader. The students can design and modify the code for their use. The book and the design examples cover almost all known design methods of frequency-selective digital filters as well as some of the authors’ own, unique techniques.
Download or read book Functional Processing of Delta Sigma Bit Stream written by Djuro G. Zrilic and published by Springer Nature. This book was released on 2020-06-29 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses non-conventional digital signal processing based on direct processing of delta-sigma modulated bit-stream. The main attributes of low-pass delta-sigma analog-to-digital converters are: simple and inexpensive design, robustness of design to component tolerances, low-power consumption, high input impedance, high resolution (more than 20 bits) and possibility of direct arithmetic operation on its bit-stream. The author presents a number of theoretical and simulation results related to newly proposed linear and non-linear circuits such as delta-sigma adders, delta-sigma rectifiers, delta-sigma RMS and AGC circuits, delta-sigma frequency deviation meters, etc. The proposed circuits are not application limited and can be used in instrumentation, sensor application, bio-medical application, communications, etc. Presents novel linear and nonlinear circuits for direct processing of delta-sigma modulated bit-stream; The proposed circuits are supported by theoretical and simulation results; Recommends potential applications of the proposed circuits, and proposes ideas for further investigation.
Download or read book Description Analysis and Simulation of a New Realization of Digital Filters written by Ahmed Fahmy Amin Mahrous and published by . This book was released on 1987 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research considers a new realization of digital filters suitable for VLSI implementation. The method involves delta modulation which provides analog-to-digital (binary) conversion. The output of a linear system is the convolution of the input and the system impulse response. This new digital filter requires that both the input and the impulse response be first converted to bit streams using delta modulation. These bit streams are then convolved. The result is an analog voltage which approximates the convolution of the analog functions. Direct convolution of the bit streams is difficult to realize with electrical circuits. A greatly simplified system with equivalent performance is a result of this research. This is called the reduced delta convolution (RDC) system (digital filter). The performance of the RDC system when used as a convolver and as a correlator is analyzed and verified by computer simulation. Analyses of the effects of self noise and external noise are included. Conclusions are that the RDC system has considerable potential as a digital filter when using integrated circuits. Realization requires considerably fewer components and simpler connections than other digital filters. A reason is that there are no multipliers required in the RDC system. The RDC system requires no synchronization, operates in real time and is easily programmed. Further, the RDC system has noise performance which is better than predicted by ordinary filter theory.
Download or read book Fundamentals of Nonlinear Digital Filtering written by Jaakko Astola and published by CRC Press. This book was released on 2020-09-10 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamentals of Nonlinear Digital Filtering is the first book of its kind, presenting and evaluating current methods and applications in nonlinear digital filtering. Written for professors, researchers, and application engineers, as well as for serious students of signal processing, this is the only book available that functions as both a reference handbook and a textbook. Solid introductory material, balanced coverage of theoretical and practical aspects, and dozens of examples provide you with a self-contained, comprehensive information source on nonlinear filtering and its applications.
