Relevant bibliographies by topics / FIR filter order

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'FIR filter order'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "FIR filter order"

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Singh, Gurpadam, and Neelam R. Prakash. "FPGA Implementation of Higher Order FIR Filter." International Journal of Electrical and Computer Engineering (IJECE) 7, no. 4 (August 1, 2017): 1874. http://dx.doi.org/10.11591/ijece.v7i4.pp1874-1881.

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The digital Finite-Impulse-Response (FIR) filters are mainly employed in digital signal processing applications. The main components of digital FIR filters designed on FPGAs are the register bank to save the samples of signals, adder to implement sum operations and multiplier for multiplication of filter coefficients to signal samples. Although, design and implementation of digital FIR filters seem simple but the design bottleneck is multiplier block for speed, power consumption and FPGA chip area occupation. The multipliers are an integral part in FIR structures and these use a large part of the chip area. This limits the number of processing elements (PE) available on the chip to realize a higher order of filter. A model is developed in the Matlab/Simulink environment to investigate the performance of the desired higher order FIR filter. An equivalent FIR filter representation is designed by the Xilinx FIR Compiler by using the exported FIR filter coefficients. The Xilinx implementation flow is completed with the help of Xilinx ISE 14.5. It is observed how the use of higher order FIR filter impacts the resource utilization of the FPGA and it’s the maximum operating frequency.
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Konopacki, J., and K. Mościńska. "Estimation of filter order for prescribed, reduced group delay FIR filter design." Bulletin of the Polish Academy of Sciences Technical Sciences 63, no. 1 (March 1, 2015): 209–16. http://dx.doi.org/10.1515/bpasts-2015-0024.

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Abstract FIR filters are often applied, as they possess many advantages, including linear-phase response and well elaborated design methods. However, group delay introduced by FIR filters is usually large. The reduction of group delay can be obtained by restriction of the linear phase requirement only to the passband. One of the problems that appear while designing FIR filters with a prescribed value of group delay is the choice of the filter order. In the paper a formula for filter order calculation for the given filter parameters and dedicated for equiripple or quasi-equiripple approximation of the magnitude response has been derived based on experiments. Numerous examples that explain how to use the derived formula have been included.
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Santhanaraj, M., Rishikesh S. S, and Subramanian A. N. Vijai Sooriya Su. "Higher Order Low Pass FIR Filter Design using IPSO Algorithm." International Journal of Trend in Scientific Research and Development Volume-3, Issue-3 (April 30, 2019): 518–20. http://dx.doi.org/10.31142/ijtsrd22899.

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Zhao, He, Liwei Zhang, Jie Liu, Chao Zhang, Jiao Cai, and Lu Shen. "Design of a Low-Order FIR Filter for a High-Frequency Square-Wave Voltage Injection Method of the PMLSM Used in Maglev Train." Electronics 9, no. 5 (April 28, 2020): 729. http://dx.doi.org/10.3390/electronics9050729.

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In position sensorless control based on a high-frequency pulsating voltage injection method, filters are used to complete the extraction of high-frequency response signals for position observation. A finite impulse response (FIR) filter has the advantages of good stability and linear phase. However, the FIR filter designed by using traditional methods has a high order which will cause a large time delay. This paper proposes a low-order FIR filter design method for a high-frequency signal injection method in the permanent magnet linear synchronous motor. Based on the frequency characteristics of the current signal, the requirement that the FIR filter needs to meet were analyzed. According to the amplitude–frequency characteristic of the FIR filter, these requirements were converted into constraint equations. By solving these equations, the coefficient of the FIR filter could be obtained. The simulation and experiment results showed the effectiveness of this low-order FIR filter.
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Stamenkovic, Negovan. "Digital FIR filter architecture based on the residue number system." Facta universitatis - series: Electronics and Energetics 22, no. 1 (2009): 125–40. http://dx.doi.org/10.2298/fuee0901125s.

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In this paper, architecture of residue number system used in FIR filters, is presented. For many years residue number coding has been recognized as a system which provides capability for implementation of a high speed addition and multiplication. These advantages of residue number system coding for the high speed FIR filters design results from the fact that an digital FIR filter requires only addition and multiplication. The proposed FIR filter architecture is performed as series of modulo multiplication and accumulation across each modulo. A numerical example illustrates the principles of FIR filtering of an 32 order low pass filter. This architecture is compared with FIR filters direct synthesis. .
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Meher, Pramod Kumar, and Sang Yoon Park. "Reconfigurable FIR Filter for Dynamic Variation of Filter Order and Filter Coefficients." JSTS:Journal of Semiconductor Technology and Science 16, no. 3 (June 30, 2016): 261–73. http://dx.doi.org/10.5573/jsts.2016.16.3.261.

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Ahfir, Maamar, Izzet Kale, and Daoud Berkani. "An Alternative Approach to the Balanced Model Truncation Algorithm for Acoustic Minimum-Phase Inverse Filters Order Reduction." ISRN Signal Processing 2011 (April 13, 2011): 1–6. http://dx.doi.org/10.5402/2011/971051.

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We propose an alternative approach to the Balanced Model Truncation method (standard method). This approach reduces substantially the order of minimum-phase inverse filters for equalizing room acoustics. This method is based on a property of the filter z transform function, which modifies the corresponding FIR coefficients before the application of the standard technique to the modified FIR coefficients filter version. In the standard technique, the Hankel singular values plot is the chief guide for a user for the selection of a reduced filter order. Results for minimum-phase inverse filter corresponding to partial equalization of measured acoustic impulse response show the superiority of the proposed method over the standard technique, in terms of reduced filters order selection.
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Kocoń, Sławomir, and Jacek Piskorowski. "Digital Finite Impulse Response Notch Filter with Non-Zero Initial Conditions, Based on an Infinite Impulse Response Prototype Filter." Metrology and Measurement Systems 19, no. 4 (December 1, 2012): 767–76. http://dx.doi.org/10.2478/v10178-012-0068-x.

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Abstract In this paper a concept of finite impulse response (FIR) narrow band-stop (notch) filter with non-zero initial conditions, based on infinite impulse response (IIR) prototype filter, is proposed. The filter described in this paper is used to suppress power line noise from ECG signals. In order to reduce the transient response of the proposed FIR notch filter, optimal initial conditions for the filter have been determined. The algorithm for finding the length of the initial conditions vector is presented. The proposed values of the length of initial conditions vector, for several ECG signals and interfering frequencies, are calculated. The proposed filters are tested using various ECG signals. Computer simulations demonstrate that the proposed FIR filters outperform traditional FIR filters with initial conditions set to zero.
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Soibam*, Daimond Singh, and Manoj Kumar. "Design and Implementation of Third Order Low Pass Digital FIR Filter using Pipelining Retiming Technique." International Journal of Engineering and Advanced Technology 10, no. 4 (April 30, 2021): 178–84. http://dx.doi.org/10.35940/ijeat.d2446.0410421.

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: This paper presents design and implementation of 3rd order low pass digital FIR filter using pipelining retiming technique. Aim of this paper is to apply pipelining retiming technique on low pass digital FIR filter and compare with the existing second order retimed FIR filter and third order broadcast, non-broadcast low pass FIR filter. MATLAB FDA tool is used to calculate digital FIR filter coefficients. Hamming and Kaiser window methods are used to find out the coefficients of the FIR filter. Broadcast and non broadcast third order low pass FIR filter architectures are used for pipelining retiming .Cutset and feed forward pipelining retiming techniques are used to retime the third order low pass digital FIR filter. We design our algorithm in VHDL and implemented on Xilinx Vivado xc7a35tcpg261-1. Area (LUT), speed and power are calculated using Xilinx Vivado 2015.2 tool. Synthesis and simulation results are discussed in this paper. Speed and area (LUT) of proposed third order low pass FIR filter is improved in comparison with existing designs.
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Abu Khadra, F., and K. Dimyati†. "First-order PMD compensation using optical FIR filter." Journal of Modern Optics 55, no. 8 (May 10, 2008): 1243–50. http://dx.doi.org/10.1080/09500340701639565.

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Dissertations / Theses on the topic "FIR filter order"

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González, David Muñoz. "Discovering unknown equations that describe large data sets using genetic programming techniques." Thesis, Linköping University, Department of Electrical Engineering, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2639.

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FIR filters are widely used nowadays, with applications from MP3 players, Hi-Fi systems, digital TVs, etc. to communication systems like wireless communication. They are implemented in DSPs and there are several trade-offs that make important to have an exact as possible estimation of the required filter order.

In order to find a better estimation of the filter order than the existing ones, genetic expression programming (GEP) is used. GEP is a Genetic Algorithm that can be used in function finding. It is implemented in a commercial application which, after the appropriate input file and settings have been provided, performs the evolution of the individuals in the input file so that a good solution is found. The thesis is the first one in this new research line.

The aim has been not only reaching the desired estimation but also pave the way for further investigations.

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Ryšavý, Marek. "Zlomkooktává analýza akustických signálů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-241138.

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The diploma thesis is focused on design and optimalization of digital octave and fraction-octave band filters. This thesis describe the behavior of filters in systems with fixed point arithmetics and investigate the impact of quantization coefficients for frequency response of filter. Filters, whitch has been designed, are implemented into simple software in C. Designed filters are in accordance with standard IEC 61260.
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Su, Wei. "Decomposition of high-order FIR filters and minimum-phase filter design." 2002. http://etd.utk.edu/2002/SuWei.pdf.

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Thesis (M.S.)--University of Tennessee, Knoxville, 2002.
Title from title page screen (viewed Sept 25, 2002). Thesis advisor: L. Montgomery Smith. Document formatted into pages (viii, 135 p. : ill.). Vita. Includes bibliographical references (p. 66-68).
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Liu, Cheng Shyuan, and 劉正壎. "The Berger Residue Code for Booth's Multiplier and Second-Order FIR Filter." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/45547826740429402936.

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碩士
國立清華大學
電機工程研究所
82
The thesis presents a new code named Berger residue code. It is a hybrid of Berger code and residue code. A method for designing processing elements (PE) with concurrent error detection capability is also presented. The proposed design is proved to be fault-secure and self-testing with respect to any single fault in the PE part, and the hardware and time redundancy is less than the Berger code system. We also applied the Berger residue code prediction (BRCP) checker to the second-order FIR filter and achieve a TSC filter system.
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Migdadi, Hassan S. O., Raed A. Abd-Alhameed, Huthaifa A. N. Obeidat, James M. Noras, E. A. A. Qaralleh, and Mohammad J. Ngala. "FIR implementation on FPGA: investigate the FIR order on SDA and PDA algorithms." 2015. http://hdl.handle.net/10454/9197.

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No
Finite impulse response (FIR) digital filters are extensively used due to their key role in various digital signal processing (DSP) applications. Several attempts have been made to develop hardware realization of FIR filters characterized by implementation complexity, precision and high speed. Field Programmable Gate Array is a reconfigurable realization of FIR filters. Field-programmable gate arrays (FPGAs) are on the verge of revolutionizing digital signal processing. Many front-end digital signal processing (DSP) algorithms, such as FFTs, FIR or IIR filters, are now most often realized by FPGAs. Modern FPGA families provide DSP arithmetic support with fast-carry chains that are used to implement multiply-accumulates (MACs) at high speed, with low overhead and low costs. In this paper, distributed arithmetic (DA) realization of FIR filter as serial and parallel are discussed in terms of hardware cost and resource utilization.
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Tsau, Yu-Shiuan, and 曹語璇. "Using Embedded Multipliers FPGAs to implement High-order FIR Filters by TDM Methods." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/80797682192912331897.

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碩士
清雲科技大學
電機工程研究所
96
Field programmable gate arrays(FPGAs) with embedded multipliers are on the verge of revolutionizing digital signal processing in the manner that programmable digital signal processors(PDSPs) did nearly two decades ago. Many digital signal processing algorithms previously built with PDSPs are now most often replaced by FPGAs. This paper presents a fast and effective approach for implementing high-order FIR filters using embedded multipliers FPGAs which can parallelly execute multiply-accumulates(MACs) at very high speed. Some practical numerical considerations in fixed-point hardware implementations, such as signed and unsigned number, Q-format and product-truncation, are introduced. To construct high-order FIR filters, a time-division-multiplex (TDM) technique is proposed which divides a sample period into several intervals during which many MACs can be executed. Nowadays, the concept of system on programmable chip (SoPC) is pervasive, this FPGA-based technique for FIR filters design also provides a method to SoPC design.
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Raissi, Dehkordi Vahid. "Order reduction of IIR and FIR filters using control methods with applications in DSL networks." Thesis, 2005. http://spectrum.library.concordia.ca/8529/1/MR10248.pdf.

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In this thesis, the problem of modeling a Digital Subscriber Line (DSL) network is investigated. Any changes made to the DSL network such as addition or relocation of customers may affect the performance of the overall network. Therefore, it is very useful to have a laboratory model to test the effect of every change made to the network easily. The model can also be used by service providers to test the quality of service before assigning a line to a new customer, reducing the trouble-shooting cost. The modeling consists of extracting the magnitude response of a particular DSL channel, fitting the data to a discrete-time finite dimensional LTI model and reducing its order reasonably. The resultant filter will be a suitable model for laboratory implementations. The magnitude response of the DSL network can be computed numerically using general and small-scale models available for transmission lines. The computation can be generalized to the distributed networks. Digital filter approximation can be accomplished using the conventional methods. A gradient-based method is also proposed in order to generate a FIR filter. The model order reduction is performed using Balanced Realization technique which is applicable to all stable finite dimensional LTI models. It is also accomplished by minimizing either mean-squared error or infinity norm of error. The performance of each method is evaluated using standard test loops. A reasonable range of model order for each test loop is also discussed based on the configuration of each loop, which can be used as a general guide for any wired transmission network.
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Books on the topic "FIR filter order"

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Sagesse, Filles de la. Notice sur la Congrégation des Filles de la Sagesse: Fondée par le Bienheureux L.-M. Grignion de Montfort. [Ottawa?: s.n.], 1997.

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Saint-Joseph, Petites filles de. Les Petites filles de Saint-Joseph à Montréal: Précis historique et compte-rendu des fêtes du cinquantenaire, 25 avril 1907. [Montréal?: s.n., 1995.

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Varol, Ozan O. Freedom and Order. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190626013.003.0015.

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Although political pluralism is crucial to a new democracy’s advancement, democracy is not just about competition for office. That competition must happen not through violence but through elections. Put differently, the democratic game must be played under stable conditions, and conflicts must be expressed and resolved through democratic means. Without stability, political pluralism will produce—not a well-functioning democracy—but a full-fledged civil war. In a chaotic political environment filled with uncertainty, what’s needed is an external referee with a steady hand. The referee must maintain a basic level of public tranquility, enforce the rules of the democratic game, arbitrate conflicts, and resolve disputes. Although other state institutions can also play referee, this chapter explains why the military enjoys a clear edge, at least in some cases, in serving as a stabilizing anchor.
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Bao, Yun, Carl Chiarella, and Boda Kang. Particle Filters for Markov-Switching Stochastic Volatility Models. Edited by Shu-Heng Chen, Mak Kaboudan, and Ye-Rong Du. Oxford University Press, 2018. http://dx.doi.org/10.1093/oxfordhb/9780199844371.013.9.

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This chapter proposes an auxiliary particle filter algorithm for inference in regime switching stochastic volatility models in which the regime state is governed by a first-order Markov chain. It proposes an ongoing updated Dirichlet distribution to estimate the transition probabilities of the Markov chain in the auxiliary particle filter. A simulation-based algorithm is presented for the method that demonstrates the ability to estimate a class of models in which the probability that the system state transits from one regime to a different regime is relatively high. The methodology is implemented in order to analyze a real-time series, namely, the foreign exchange rate between the Australian dollar and the South Korean won.
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Skarbek, David. The Puzzle of Prison Order. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780190672492.001.0001.

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The Puzzle of Prison Order presents a theory of why prisons and prison life vary so much. While many people think prisons are all the same—rows of cells filled with violent men who officials rule with an iron fist, life behind bars varies in incredible ways. In some facilities, prison officials govern with care and attention to prisoners’ needs. In others, officials have remarkably little influence on the everyday life of prisoners, sometimes not even providing necessities like food and clean water. Why does prison social order around the world look so remarkably different? This book shows that how prisons are governed—sometimes by the state and sometimes by the prisoners—is tremendously important. It investigates life in a wide array of facilities—prisons in Brazil, Bolivia, Norway, England and Wales, a prisoner of war camp, women’s prisons in California, and a gay and transgender housing unit in the Los Angeles County Jail—to understand the hierarchy of life on the inside. Drawing on theories from political economy and a vast empirical literature on prison systems, the book offers a framework for understanding how social order evolves and takes root behind bars.
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Goodman, Rachel, James Genone, and Nick Kroll, eds. Singular Thought and Mental Files. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198746881.001.0001.

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Coinciding with recognition of the need for more clarity about the notion of singular (or de re) thought, there has been a surge of interest in the notion of a mental file as a way to understand what is distinctive about singular thought. But what isn’t always clear is what mental files are meant to be, and why we should believe that thoughts that employ them are singular (as opposed to descriptive). In order to make progress on these questions, this volume brings together original papers by leading scholars on singular thought, mental files, and the relationship between the two, as well as an introduction providing an overview of the central issues.
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Aderinto, Saheed. The Sexual Scourge of Imperial Order. University of Illinois Press, 2017. http://dx.doi.org/10.5406/illinois/9780252038884.003.0005.

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This chapter argues that sex had broader implications for the future of the British Empire, while also showing that the generalization that women were the moral scourge of the empire whose sexuality needed to be curtailed must be qualified. The African rank-and-file of the colonial army, like women, became another demographic whose sexuality was treated as dangerous. Indeed, the colonialists' perception of the effect of sexual savagery and their methods of dealing with it were class specific and were constantly in a state of flux. This disequilibrium to a large extent was based on the weighting of the medical consequences of gonorrhea and syphilis against other communicable diseases like influenza. The chapter then shows that the medicalization of sex reflected the quest by colonial medics to appropriate the panic over prostitution as a means of repositioning themselves as a vital tool of civilization.
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Sklar, Larry A., ed. Flow Cytometry for Biotechnology. Oxford University Press, 2005. http://dx.doi.org/10.1093/oso/9780195183146.001.0001.

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Flow cytometry is a sensitive and quantitative platform for the measurement of particle fluorescence. In flow cytometry, the particles in a sample flow in single file through a focused laser beam at rates of hundreds to thousands of particles per second. During the time each particle is in the laser beam, on the order of ten microseconds, one or more fluorescent dyes associated with that particle are excited. The fluorescence emitted from each particle is collected through a microscope objective, spectrally filtered, and detected with photomultiplier tubes. Flow cytometry is uniquely capable of the precise and quantitative molecular analysis of genomic sequence information, interactions between purified biomolecules and cellular function. Combined with automated sample handling for increased sample throughput, these features make flow cytometry a versatile platform with applications at many stages of drug discovery. Traditionally, the particles studied are cells, especially blood cells; flow cytometry is used extensively in immunology. This volume shows how flow cytometry is integrated into modern biotechnology, dealing with issues of throughput, content, sensitivity, and high throughput informatics with applications in genomics, proteomics and protein-protein interactions, drug discovery, vaccine development, plant and reproductive biology, pharmacology and toxicology, cell-cell interactions and protein engineering.
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Bidese, Ermenegildo, and Alessandra Tomaselli. Developing pro-drop. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198815853.003.0003.

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The syntax of Cimbrian, a Germanic heritage language, is at a peculiar developmental stage: on the one hand it has lost the V2 linear restriction, but still maintains both pronominal subject inversion and a residual root-embedded word order asymmetry; on the other, it is characterized by both ‘free’ subject inversion (VP DP) and the systematic violation of the ‘that-trace’ filter, but does not allow null subjects (NSs). This specific mixture of both V2- and pro-drop properties gives us an opportunity to revisit the traditional assumption that Germanic V2 is incompatible with full pro-drop. In this work, we propose that the development of pro-drop crucially depends on the loss of V-to-Fin movement and, consequently, on the lowering of structural subject agreement within TP so that the whole complex process of feature sharing (KEEP, SHARE, DONATE) between C and I is restructured, changing from a C-dominant system to an I-dominant system.
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Pitt, Matthew. Motor unit anatomy and physiology. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780198754596.003.0006.

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This chapter focuses on the signals recorded with needle electromyography (EMG) and the measurement of their specific parameters. These parameters include duration, amplitude, number of phases, and stability. The concept of the electrophysiologic biopsy and the explanation of unusual findings seen on EMG are introduced. In relation to the interference pattern, discussions of the firing rate, recruitment order, and interference pattern are given. Moving from the theoretical explanation of the findings, the problems of the accurate quantitative analysis of the motor unit potential are discussed and measures to improve quantification, particularly in children, are highlighted. The importance of filter settings, the storage of signals, and the different ways of collecting and analysing the potentials are all covered. This section finishes with discussion of the normative range for motor unit duration, and concludes with the automatic analysis of the interference pattern, including turns/amplitude analysis, number of short segments measurement, and envelope analysis.
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Book chapters on the topic "FIR filter order"

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Farajdokht, Akbar, and Behbood Mashoufi. "FIR Filter Realization Using New Algorithms in Order to Eliminate Power Line Interference from ECG Signal." In Lecture Notes in Electrical Engineering, 879–95. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-8672-4_68.

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Rawlins, Michael W. "Fifth-Order Chebyshev Tunable Filter." In Low Power Wireless Receivers for IoT Applications with Multi-band Calibration Algorithms, 43–47. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-70729-3_7.

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Su, Xiaojie, Yao Wen, Yue Yang, and Peng Shi. "Reduced-Order Filter Design of Fuzzy Stochastic Systems." In Intelligent Control, Filtering and Model Reduction Analysis for Fuzzy-Model-Based Systems, 215–41. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-81214-0_11.

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Cao, Meili, Haizhen He, Rongming Luo, and Lei Wen. "Nth-Order Multifunction Filter Employing Current Differencing Transconductance Amplifiers." In Algorithms and Architectures for Parallel Processing, 3–12. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-27161-3_1.

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Vishal, Ramola, Mishra Saurabh, Singh R.K., and Chauhan D.S. "CCCDBA Based Implementation of Sixth Order Band Pass Filter." In Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 217–23. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-35615-5_31.

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Wu, Ligang, and Zidong Wang. "Reduced-Order $$\mathcal {H}_{2}$$ H 2 Filter Design for Discrete LRPs." In Filtering and Control for Classes of Two-Dimensional Systems, 197–216. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-13698-1_9.

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Nayak, Seema, and Amrita Rai. "Synthesis and Analysis of Optimal Order Butterworth Filter for Denoising ECG Signal on FPGA." In Algorithms for Intelligent Systems, 359–69. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-4936-6_39.

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Indrebo, Kevin M., Richard J. Povinelli, and Michael T. Johnson. "Third-Order Moments of Filtered Speech Signals for Robust Speech Recognition." In Nonlinear Analyses and Algorithms for Speech Processing, 277–83. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/11613107_24.

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Starke, Ludger, Karsten Tabelow, Thoralf Niendorf, and Andreas Pohlmann. "Denoising for Improved Parametric MRI of the Kidney: Protocol for Nonlocal Means Filtering." In Methods in Molecular Biology, 565–76. New York, NY: Springer US, 2021. http://dx.doi.org/10.1007/978-1-0716-0978-1_34.

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AbstractIn order to tackle the challenges caused by the variability in estimated MRI parameters (e.g., T2* and T2) due to low SNR a number of strategies can be followed. One approach is postprocessing of the acquired data with a filter. The basic idea is that MR images possess a local spatial structure that is characterized by equal, or at least similar, noise-free signal values in vicinities of a location. Then, local averaging of the signal reduces the noise component of the signal. In contrast, nonlocal means filtering defines the weights for averaging not only within the local vicinity, bur it compares the image intensities between all voxels to define “nonlocal” weights. Furthermore, it generally compares not only single-voxel intensities but small spatial patches of the data to better account for extended similar patterns. Here we describe how to use an open source NLM filter tool to denoise 2D MR image series of the kidney used for parametric mapping of the relaxation times T2* and T2.This chapter is based upon work from the COST Action PARENCHIMA, a community-driven network funded by the European Cooperation in Science and Technology (COST) program of the European Union, which aims to improve the reproducibility and standardization of renal MRI biomarkers.
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Chergui, Akram, Nicolas Beraud, Frédéric Vignat, and François Villeneuve. "Finite Element Modeling and Validation of Metal Deposition in Wire Arc Additive Manufacturing." In Lecture Notes in Mechanical Engineering, 61–66. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-70566-4_11.

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AbstractWire arc additive manufacturing allows the production of metallic parts by depositing beads of weld metal using arc-welding technologies. This low-cost additive manufacturing technology has the ability to manufacture large-scale parts at a high deposition rate. However, the quality of the obtained parts is greatly affected by the various thermal phenomena present during the manufacturing process. Numerical simulation remains an effective tool for studying such phenomena. In this work, a new finite element technique is proposed in order to model metal deposition in WAAM process. This technique allows to gradually construct the mesh representing the deposited regions along the deposition path. The heat source model proposed by Goldak is adapted and combined with the proposed metal deposition technique taking into account the energy distribution between filler material and the molten pool. The effectiveness of the proposed method is validated by series of experiments, of which an example is detailed in this paper.
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Conference papers on the topic "FIR filter order"

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Srinivasa Rao, Bandreddi Ray, and B. Bala Tripura Sundari. "An Efficient Reconfigurable FIR Filter for Dynamic Filter order variation." In 2019 International Conference on Communication and Electronics Systems (ICCES). IEEE, 2019. http://dx.doi.org/10.1109/icces45898.2019.9002375.

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Sreekanth, S., Pratima B. Shinde, and G. Vijaya Durga. "Performance Analysis of Higher Order FIR Polyphase Filter." In 2018 Second International Conference on Intelligent Computing and Control Systems (ICICCS). IEEE, 2018. http://dx.doi.org/10.1109/iccons.2018.8663188.

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Selvakumar, J., Vidhyacharan Bhaskar, and S. Narendran. "FPGA Based Efficient Fast FIR Algorithm for Higher Order Digital FIR Filter." In 2012 International Symposium on Electronic System Design (ISED). IEEE, 2012. http://dx.doi.org/10.1109/ised.2012.40.

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Jiahao, Li, Li Bingyi, Hu Shankang, Qiao Tingting, and Xie Yizhuang. "A FIR filter with variable order based on FPGA." In 2019 IEEE International Conference on Signal, Information and Data Processing (ICSIDP). IEEE, 2019. http://dx.doi.org/10.1109/icsidp47821.2019.9173091.

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Scholnik, Dan P. "Mixed-norm fir filter optimization using second-order cone programming." In Proceedings of ICASSP '02. IEEE, 2002. http://dx.doi.org/10.1109/icassp.2002.5744904.

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Scholnik. "Mixed-norm FIR filter optimization using second-order cone programming." In IEEE International Conference on Acoustics Speech and Signal Processing ICASSP-02. IEEE, 2002. http://dx.doi.org/10.1109/icassp.2002.1006045.

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Meena, Kripa, and Tarun Kumar Rawat. "Hybrid structure for odd order variable fractional-delay FIR filter." In 2014 International Conference on Communications and Signal Processing (ICCSP). IEEE, 2014. http://dx.doi.org/10.1109/iccsp.2014.6950056.

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Das, Rajib, Amrita Guha, and Ananya Bhattacharya. "FPGA based higher order FIR filter using XILINX system generator." In 2016 International conference on Signal Processing, Communication, Power and Embedded System (SCOPES). IEEE, 2016. http://dx.doi.org/10.1109/scopes.2016.7955632.

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Johansson, Kenny, Linda S. DeBrunner, Oscar Gustafsson, and Victor DeBrunner. "Design of multiplierless FIR filters with an adder depth versus filter order trade-off." In 2009 Conference Record of the Forty-Third Asilomar Conference on Signals, Systems and Computers. IEEE, 2009. http://dx.doi.org/10.1109/acssc.2009.5469952.

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Schwarz, S., C. G. Schaeffer, K. Petermann, A. Rahim, and J. Bruns. "Tunable Two-Stage 6th order FIR-Filter for Residual Dispersion Compensation." In 39th European Conference and Exhibition on Optical Communication (ECOC 2013). Institution of Engineering and Technology, 2013. http://dx.doi.org/10.1049/cp.2013.1580.

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Reports on the topic "FIR filter order"

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Scholnik, Dan P., and Jeffrey O. Coleman. Second-Order Cone Formulations of Mixed-Norm Error Constraints for FIR Filter Optimization. Fort Belvoir, VA: Defense Technical Information Center, June 2010. http://dx.doi.org/10.21236/ada523252.

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Klosterman, Donald A., and Mary Galaska. Power and Thermal Technology for Air and Space. Delivery Order 0006: Nano-filled Polymers for Electrical Insulation. Fort Belvoir, VA: Defense Technical Information Center, October 2006. http://dx.doi.org/10.21236/ada465312.

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Connor, Robert J., and Cem Korkmaz. Fatigue Categorization of Obliquely Oriented Welded Attachments. Purdue University, 2020. http://dx.doi.org/10.5703/1288284317210.

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In current bridge design specifications and evaluation manuals from the American Association of State Highway and Transportation Officials (AASHTO LRFD) (AASHTO, 2018), the detail category for base metal at the toe of transverse stiffener-to-flange fillet welds and transverse stiffener-to-web fillet welds to the direction of the web and hence, the primary stress) is Category C′. In skewed bridges or various other applications, there is sometimes a need to place the stiffener or a connection plate at an angle that is not at 90 degrees to the web. As the plate is rotated away from being 90 degrees to the web, the effective “length” of the stiffener in the longitudinal direction increases. However, AASHTO is currently silent on how to address the possible effects on fatigue performance for other angles in between these two extremes. This report summarizes an FEA study that was conducted in order to investigate and determine the fatigue category for welded attachments that are placed at angles other than 0 or 90 degrees for various stiffener geometries and thicknesses. Recommendations on how to incorporate the results into the AASHTO LRFD Bridge Design Specifications are included in this report.
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Ander, Kjell. An abdominal stridulation organ in Cyphoderris (Prophalangopsidae) and concerning the systematic classification of the Ensifera (Saltatoria). MacEwan University Library, January 2021. http://dx.doi.org/10.31542/r.gm:2687.

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Ensiferan insects (crickets, katydids, grigs and allies) are well known for rubbing parts of their cuticle together to produce sound: a process called stridulation. In this article Swedish entomologist Kjell Ander describes a novel (at the time) stridulatory apparatus in the great grig, Cyphoderris monstrosa (Prophalangopsidae), a relict ensiferan found in the mountainous regions of western North America. Ander used preserved specimens to predict the sound-producing function of a pair of abdominal file-scraper apparatuses, although he was never able to directly test his proposed mechanism nor did he speculate as to the adaptive significance of the structures. The article concludes with a review of the systematic placement of various higher level taxa within the order Orthoptera, of which Ensifera is one suborder.
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Ander, Kjell. An abdominal stridulation organ in Cyphoderris (Prophalangopsidae) and concerning the systematic classification of the Ensifera (Saltatoria). MacEwan University Library, January 2021. http://dx.doi.org/10.31542/r.gm:2687.

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Ensiferan insects (crickets, katydids, grigs and allies) are well known for rubbing parts of their cuticle together to produce sound: a process called stridulation. In this article Swedish entomologist Kjell Ander describes a novel (at the time) stridulatory apparatus in the great grig, Cyphoderris monstrosa (Prophalangopsidae), a relict ensiferan found in the mountainous regions of western North America. Ander used preserved specimens to predict the sound-producing function of a pair of abdominal file-scraper apparatuses, although he was never able to directly test his proposed mechanism nor did he speculate as to the adaptive significance of the structures. The article concludes with a review of the systematic placement of various higher level taxa within the order Orthoptera, of which Ensifera is one suborder.
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Khomenko, Tetiana. TIME AND SPACE OF HISTORICAL PARALLELS OF EUGEN SVERSTIUK’S JOURNALISM. Ivan Franko National University of Lviv, March 2021. http://dx.doi.org/10.30970/vjo.2021.50.11095.

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The article is dedicated to the investigation of time-space measurements of journalistic works of Eugen Sverstiuk, a well-known Ukrainian journalist. In particular, the time-space continuum of his works is being discussed, which is characterized as comprehensive, continuous, filled with archetypical images which metaphorize the text, but at the same time structure it, and are beaded on the axis of time and documentarily located in the space. The logics of images initiated in the text is exaggerated by constant dwelling of the author in the time-space dimensions of the epoque, of which he was a contemporary, as well as precise knowledge of World and Ukrainian history and culture. Historical parallelism of journalism of E. Sverstiuk possesses double potential. On the one hand, the author provides arguments for confirmation of his own opinion, and on the other, he shows us historical collisions in the new aspect, which helps consider the past, better understand the present, and think of the future. Pages of his works is space for author’s considerations, which logics impresses by free transgression of the author in the time, and his ability to grasp the most essential, although sometimes precedent, sometimes sudden and forgotten, or even unknown historical facts in order to force them to resonate in the new historical realities, first of all to indicate the importance of national and the need for assigning to it more significance. Using retrospectives, E. Sverstiuk encourages us to return to the national sources and to seek in ourselves the reflections of nationality in order to return historical truth to our audience. This is what, according to E. Sverstiuk, was believed to be one of the most necessary conditions of existence to the independent state. Time-space continuum of E. Sverstiuk’s journalism is reproduction of comprehensive history as continuous process of the development of humanity, and of formation of comprehensive, total, and so to say epic reading and understanding of these processes via accentuation of reader’s attention on key events, phenomena, and facts.
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Bauer, Andrew, James Forsythe, Jayanarayanan Sitaraman, Andrew Wissink, Buvana Jayaraman, and Robert Haehnel. In situ analysis and visualization to enable better workflows with CREATE-AV™ Helios. Engineer Research and Development Center (U.S.), June 2021. http://dx.doi.org/10.21079/11681/40846.

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The CREATE-AV™ Helios CFD simulation code has been used to accurately predict rotorcraft performance under a variety of flight conditions. The Helios package contains a suite of tools that contain almost the entire set of functionality needed for a variety of workflows. These workflows include tools customized to properly specify many in situ analysis and visualization capabilities appropriate for rotorcraft analysis. In situ is the process of computing analysis and visualization information during a simulation run before data is saved to disk. In situ has been referred to with a variety of terms including co-processing, covisualization, coviz, etc. In this paper we describe the customization of the pre-processing GUI and corresponding development of the Helios solver code-base to effectively implement in situ analysis and visualization to reduce file IO and speed up workflows for CFD analysts. We showcase how the workflow enables the wide variety of Helios users to effectively work in post-processing tools they are already familiar with as opposed to forcing them to learn new tools in order post-process in situ data extracts being produced by Helios. These data extracts include various sources of information customized to Helios, such as knowledge about the near- and off-body grids, internal surface extracts with patch information, and volumetric extracts meant for fast post-processing of data. Additionally, we demonstrate how in situ can be used by workflow automation tools to help convey information to the user that would be much more difficult when using full data dumps.
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