Дисертації з теми "Oscillations in digital filters"
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Mackle, John. "Integrated digital filters." Thesis, Queen's University Belfast, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334588.
Повний текст джерелаHicks, William T. "MEDIAN FILTERS." International Foundation for Telemetering, 2006. http://hdl.handle.net/10150/604155.
Повний текст джерелаMost modern digital filtering is done by taking the average (mean) of a signal or some weighted average. Another method is to use feedback, which more closely resembles how analog filters with feedback operate. In the case of low pass filters, all these methods tend to give a trade off in getting the signal to pass while attenuating the higher frequency noise. An alternative is to use a median filter, which selects the mid value of a group of points. While this is not as computationally simple as other filters, it allows for the attenuation of noise while allowing sudden changes in signal level to pass thru unaltered. This paper discusses the characteristics of median filters and methods of implementing them.
Karlsson, Magnus. "Implementation of digital-serial filters /." Linköping : Dept. of Electrical Engineering, Univ, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-3520.
Повний текст джерелаWalls, Kirsty. "Nanophotonic filters for digital imaging." Thesis, University of Glasgow, 2013. http://theses.gla.ac.uk/4514/.
Повний текст джерелаEl-Feghi, Idris S. "Design of three-dimensional digital filters." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0013/MQ52542.pdf.
Повний текст джерелаGustafsson, Oscar. "Contributions to low-complexity digital filters /." Linköping : Univ, 2003. http://www.bibl.liu.se/liupubl/disp/disp2003/tek837s.pdf.
Повний текст джерелаBolton, Alan Graham. "Digital filters and cascade control compensators /." Title page, contents and abstract only, 1990. http://web4.library.adelaide.edu.au/theses/09PH/09phb694.pdf.
Повний текст джерела詹文達 and Man-tat Jimmy Tsim. "High speed realisation of digital filters." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1989. http://hub.hku.hk/bib/B31208939.
Повний текст джерелаOkullo-Oballa, Thomas Samuel. "Systolic realization of multirate digital filters." Thesis, [Hong Kong] : University of Hong Kong, 1988. http://sunzi.lib.hku.hk/hkuto/record.jsp?B12433998.
Повний текст джерелаTsim, Man-tat Jimmy. "High speed realisation of digital filters /." [Hong Kong] : University of Hong Kong, 1989. http://sunzi.lib.hku.hk/hkuto/record.jsp?B12374088.
Повний текст джерелаVolkova, Anastasia. "Towards reliable implementation of digital filters." Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066579/document.
Повний текст джерелаIn this thesis we develop approaches for improvement of the numerical behavior of digital filters with focus on the impact of accuracy of the computations. This work is done in the context of a reliable hardware/software code generator for Linear Time-Invariant (LTI) digital filters, in particular with Infinite Impulse Response (IIR). With this work we consider problems related to the implementation of LTI filters in Fixed-Point arithmetic while taking into account finite precision of the computations necessary for the transformation from filter to code. This point is important in the context of filters used in embedded critical systems such as autonomous vehicles. We provide a new methodology for the error analysis when linear filter algorithms are investigated from a computer arithmetic aspect. In the heart of this methodology lies the reliable evaluation of the Worst-Case Peak Gain measure of a filter, which is the l1 norm of its impulse response. The proposed error analysis is based on a combination of techniques such as rigorous Floating-Point error analysis, interval arithmetic and multiple precision implementations. This thesis also investigates the problematic of compromise between hardware cost (e.g. area) and the precision of computations during the implementation on FPGA. We provide basic brick algorithms for an automatic solution of this problem. Finally, we integrate our approaches into an open-source unifying framework to enable automatic and reliable implementation of any LTI digital filter algorithm
Gottscheber, Achim. "Multi-dimensional wave digital filters and wavelets." [S.l. : s.n.], 1998. http://deposit.ddb.de/cgi-bin/dokserv?idn=958171483.
Повний текст джерелаKumar, Bhunesh, and Naeem Ahmad. "Studies on Circulator-Tree Wave Digital Filters." Thesis, Linköping University, Department of Electrical Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-51295.
Повний текст джерелаA wave digital filter is derived from an analog filter, which is realized as classical doubly resistively terminated reactancefilters. Perfectly designed wave digital filters express good dynamic signal range, low roundoff noise and excellent stabilitycharacteristics with respect to nonlinearity which are produced due to finite wordlength effects. Wave digital filters inheritthe sensitivity properties from analog filters, therefore, coefficients values can be selected to favorable values.Wave digital filters, derived from ladder filters, have low coefficient sensitivity in the passband and stopband. These WDFsare very complicated and are non-modular. The lattice wave digital filters are modular and are not complex. However, theyhave very high sensitivity in the stopband and thus require large coefficient wordlengths. The number of coefficients equalsthe filter order which have to be odd.This thesis discusses the wave digital filter structures that are modular because they are designed by cascading the first-orderand second-order sections. These WDFs can be pipelined. They also exhibit all the above mentioned favorable properties.Similar to lattice WDFs, these structures are restricted to symmetrical and antisymmetrical transfer functions. The synthesisof these structures is based on the factorization of the scattering matrix of lossless two-ports.In this thesis work, lowpass wave digital filters based on circulator-tree structure are designed with different orders startingfrom 3 and going upto 13. In parallel to these circulator-tree wave digital filters, the simple digital filters are also designedwith the same specification. The results of the two filters are compared with each other. It is observed that impulse responseand attenuation response of the two kind of filters perfectly match. Therefore, it is can be concluded that circulator-tree WDFupto Nth order can be synthesized. The implementation examples of two filter with order 3 and order 7 is presented in thisdocumentation for ready reference. It has also been shown that the order of sections does not affect the transfer function ofthe filter. Noise has been introduced and adaptor sections are penetrated. From the results it is concluded that the order of theadaptor sections does not matter and also that the noise does not affect the other adaptors sections, it only propagates throughother adaptors sections.
Tam, Shedman. "Suppression of limit cycles in digital filters." Thesis, University of Ottawa (Canada), 1987. http://hdl.handle.net/10393/5103.
Повний текст джерелаMcFadden, Steven B. "Multimedia applications of three-dimensional digital filters." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0030/MQ65382.pdf.
Повний текст джерелаRolls, Andrew John. "Theory and applications of digital smear filters." Thesis, University of Canterbury. Electrical and Electronic Engineering, 1994. http://hdl.handle.net/10092/5865.
Повний текст джерелаMusonda, Evaristo. "Synthesis of filters for digital wireless communications." Thesis, University of Leeds, 2015. http://etheses.whiterose.ac.uk/11750/.
Повний текст джерелаSwarnakar, Vivek. "Optimal morphological filters /." Online version of thesis, 1993. http://hdl.handle.net/1850/11703.
Повний текст джерелаSaab, Sami James. "Design of digital filters for low-power digital signal processing applications." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0001/MQ41376.pdf.
Повний текст джерела梁鴻鈞 and Hung-kwan Leung. "Multi-rank wavelet filters." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2001. http://hub.hku.hk/bib/B31224714.
Повний текст джерелаLeung, Hung-kwan. "Multi-rank wavelet filters." Hong Kong : University of Hong Kong, 2001. http://sunzi.lib.hku.hk/hkuto/record.jsp?B23242395.
Повний текст джерелаRosenthal, Jordan. "Filters and filterbanks for hexagonally sampled signals." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/13347.
Повний текст джерелаOrcutt, Edward Kerry 1964. "Correlation filters for time domain signal processing." Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/277215.
Повний текст джерелаSadeghifar, Mohammad Reza. "On High-Speed Digital-to-Analog Converters and Semi-Digital FIR Filters." Licentiate thesis, Linköpings universitet, Elektroniska Kretsar och System, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-114274.
Повний текст джерелаLandernäs, Krister. "Implementation of digital-serial LDI/LDD allpass filters." Doctoral thesis, Mälardalen University, Department of Computer Science and Electronics, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-155.
Повний текст джерелаIn this thesis, digit-serial implementation of recursive digital filters is considered. The theories presented can be applied to any recursive digital filter, and in this thesis we study the lossless discrete integrator (LDI) allpass filter. A brief introduction regarding suppression of limit cycles at finite wordlength conditions is given, and an extended stability region, where the second-order LDI allpass filter is free from quantization limit cycles, is presented.
The realization of digit-serial processing elements, i.e., digit-serial adders and multipliers, is studied. A new digit-serial hybrid adder (DSHA) is presented. The adder can be pipelined to the bit level with a short arithmetic critical path, which makes it well suited when implementing high-throughput recursive digital filters.
Two digit-serial multipliers which can be pipelined to the bit level are considered. It is concluded that a digit-serial/parallelmultiplier based on shift-accumulation(DSAAM) is a good candidate when implementing recursive digital systems, mainly due to low latency. Furthermore, our study shows that low latency will lead to higher throughput and lower power consumption.
Scheduling of recursive digit-serial algorithms is studied. It is concluded that implementation issues such as latency and arithmetic critical path are usually required before scheduling considerations can be made. Cyclic scheduling using digit-serial arithmetics is also considered. It is shown that digit-serial cyclic scheduling is very attractive for high-throughput implementations.
Hezar, Rahmi. "Oversampled digital filters : a design methodology and implementation." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/14936.
Повний текст джерелаWróblewski, Artur [Verfasser]. "Design of Low Power Digital Filters / Artur Wróblewski." Aachen : Shaker, 2005. http://d-nb.info/1181615852/34.
Повний текст джерелаBaguma, Gerald. "High Level Synthesis of FPGA-Based Digital Filters." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-232414.
Повний текст джерелаRich, Thomas H. "Algorithms for computer aided design of digital filters." Thesis, Monterey, California. Naval Postgraduate School, 1988. http://hdl.handle.net/10945/22867.
Повний текст джерелаSamad, Salina Abdul. "Link-transmission-line modelling of wave digital filters." Thesis, University of Nottingham, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260520.
Повний текст джерелаDemirsoy, Süleyman Sırrı. "Complexity reduction in digital filters and filter banks." Thesis, University of Westminster, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.433680.
Повний текст джерелаMatharu, P. S. "Architectures for the VLSI implementation of digital filters." Thesis, City University London, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382819.
Повний текст джерелаSundaralingam, Sathiaseelan. "Evolving optimal IIR and adaptive filters." Thesis, University of Glasgow, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.300977.
Повний текст джерелаSchipman, Kurt. "Control systems and algorithms for active filters." Thesis, Staffordshire University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360218.
Повний текст джерелаPrice, Marc Royston. "Hybrid structures for high order recursive filters." Thesis, King's College London (University of London), 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.339120.
Повний текст джерелаKennedy, Paul B. (Paul Brodie). "Filter designer : an intuitive digital filter design environment." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23849.
Повний текст джерелаLertniphonphun, Worayot. "Unified design procedure for digital filters in the complex domain." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/14765.
Повний текст джерелаHicks, William T. "An Analysis of Various Digital Filter Types for Use as Matched Pre-Sample Filters in Data Encoders." International Foundation for Telemetering, 1995. http://hdl.handle.net/10150/611585.
Повний текст джерелаThe need for precise gain and phase matching in multi-channel data sampling systems can result in very strict design requirements for presample or anti-aliasing filters. The traditional use of active RC-type filters is expensive, especially when performance requirements are tight and when operation over a wide environmental temperature range is required. New Digital Signal Processing (DSP) techniques have provided an opportunity for cost reduction and/or performance improvements in these types of applications. This paper summarizes the results of an evaluation of various digital filter types used as matched presample filters in data sampling systems.
Kwan, Wai Ming Hercule. "Parallel implementation of a fast third-order volterra digital filter /." Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.
Повний текст джерелаLaw, Ying Man. "Iterative algorithms for the constrained design of filters and filter banks /." View abstract or full-text, 2004. http://library.ust.hk/cgi/db/thesis.pl?ELEC%202004%20LAW.
Повний текст джерелаIncludes bibliographical references (leaves 108-111). Also available in electronic version. Access restricted to campus users.
Cederström, Love. "Power Efficient Digital Decimation Filters for Sigma-Delta ADCs." Thesis, Linköping University, Department of Electrical Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-51464.
Повний текст джерелаThe development of integrated circuit technology seen in the last decades has enabled a large variety of battery operated equipment to emerge, such as smallsensors and medical implants. These applications often has low requirements on sampling frequency but require a very low power consumption to achieve a longbattery life.
This thesis investigates one aspect of implementing a low power and low frequency analog to digital converter (ADC) using a technique called Sigma Delta-modulation.The Sigma Delta-ADC uses few analog components but instead it requires a digital filter to extract the wanted resolution. It is this filter which is under investigation in this work.
To investigate the power consumption under the presumption that the filter would be a custom circuit implemented on-chip, a simplistic approach has been taken. Based on a high-level algorithmic investigation and the fact that it is popularly used together with Sigma Delta-modulators the Cascaded Integrator Comb (CIC) filter was chosen for implementation.
The CIC-filter uses only adders and delay elements which is a great advantage when aiming at a low power consumption. The drawback is that this filter has a poor passband which can introduce distortion within the signal band. Using the Spectre simulator provided in the Cadence Virtuoso suite the lowest power consumption achieved was 16 nW, extracting 80 % of the theoretically available resolution.
Critchley, J. "Analysis and design of periodically time varying digital filters." Thesis, University of Cambridge, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383172.
Повний текст джерелаCao, Letian, and Yuankai Guan. "Use of digital filters based on Labview and Matlab." Thesis, Linnéuniversitetet, Institutionen för fysik och elektroteknik (IFE), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-45703.
Повний текст джерелаChit, Nassim N. "Weighted Chebyshev complex-valued approximation for FIR digital filters." Thesis, Swansea University, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278340.
Повний текст джерелаTurek, Daniel B. (Daniel Bernard) 1980. "Design of efficient digital interpolation filters for integer upsampling." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/18010.
Повний текст джерелаIncludes bibliographical references (leaf 44).
Digital signal interpolation systems can be implemented in a variety of ways. The most basic interpolation system for integer upsampling cascades an expander unit with an interpolation low-pass filter. More complex implementations can cascade multiple expander and low-pass filter pairs. There is also flexibility in the design of interpolation filters. This thesis explores how digital interpolation systems for integer upsampling can be efficiently implemented. Efficiency is measured in terms of the number of multiplications required for each output sample point. The following factors are studied for their effect on system efficiency: the decomposition of an interpolation system into multiple cascaded stages, the use of recursive and non-recursive interpolation filters, and the use of linear-phase and minimum-phase interpolation filters. In this thesis interpolation systems are designed to test these factors, and their computational costs are calculated. From this data, conclusions are drawn about efficient designs of interpolation systems for integer upsampling.
by Daniel B. Turek.
M.Eng.
Dalbom, Axel, Markuss Sprogis, Emil Stolpe, and Nils Söderkvist. "A Tool for Learning Digital Filters in Virtual Reality." Thesis, Uppsala universitet, Institutionen för informationsteknologi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-353852.
Повний текст джерелаDet finns många olika verktyg för lärande ändamål, det kan bland annat vara datorer eller penna och papper. Virtuell verklighet är ett verktyg för att skapa datorgenererade miljöer. Det används mestadels inom spelindustrin men vi i det här projektet försöker utöka användningsområdet för virtuell verklighet inom utbildning, i detta fall för kurser relaterade till signalbehandling genom att hjälpa användare att bygga intuition för designen av digitala filter. Slutprodukten är ett hjälpmedel i virtuell verklighet som tillåter användaren att skapa och ändra digitala filters specifikationer och sedan se vad dessa förändringar har för konsekvenser för filtren. Med det här projektet visar vi att det finns potential för virtuell verklighet i lärande ändamål, även om det huvudsakliga användingsområdet är inom spelindustrin.
Jones, Andrew Philip Stephen. "Design and implementation of linear phase wave digital filters." Thesis, University of Warwick, 1992. http://wrap.warwick.ac.uk/110793/.
Повний текст джерелаKaram, Lina J. "Design of complex digital FIR filters in the chebyshev sense." Diss., Georgia Institute of Technology, 1995. http://hdl.handle.net/1853/22219.
Повний текст джерелаBews, R. "Digital crossover networks for active loudspeaker systems." Thesis, University of Essex, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383428.
Повний текст джерелаOhlsson, Henrik. "Studies on Design and Implementation of Low-Complexity Digital Filters." Doctoral thesis, Linköping : Dept. of Electrical Engineering, Univ, 2005. http://www.ep.liu.se/diss/science_technology/09/49/index.html.
Повний текст джерела