Relevant bibliographies by topics / Anti-aliasing filter

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Academic literature on the topic 'Anti-aliasing filter'

Author: Grafiati
Published: 28 June 2021
Last updated: 4 February 2022

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Journal articles on the topic "Anti-aliasing filter"

1

DEKHANDJI, Fatma Zohra. "Design Optimization of PMU Anti-Aliasing Filters using Taguchi Method." Algerian Journal of Signals and Systems 5, no. 4 (2020): 215–19. http://dx.doi.org/10.51485/ajss.v5i4.119.

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A Phasor Measurement Unit (PMU) is a monitoring device, which serves in checking the power system condition by measuring voltage and current phasors along with frequency at a particular node. The basic structure of PMU consists of Synchronization Unit, Measurement Unit and Data Transmission Unit. The Measurement Unit has three components: Anti-aliasing filters, Analog-to-Digital Converter and Phasor measurement Unit/ Processor. An anti-aliasing filter ensures that all the analog signals have the same phase shift and attenuation thus assuring that the phase angle differences and relative magnitudes of the different signals are unchanged. Anti-aliasing filters made up of an analog front end and a digital decimation filter are far more stable as far as aging and temperature variations are concerned. IEEE C37.118 standard stipulates that it is mandatory to use the filter for avoiding any aliasing errors. Out of various analog filters, the Butterworth has been preferred due to its flat response in pass-band as compared to other filters. In this work, it is attempted to design anti-aliasing filters to be used in PMUs. The design problem is formulated as an optimization task that is solved using the Taguchi method. The results show better performance in terms characteristics compared to the conventional filters. The designed filters may be employed as building blocks in modern PMUs.
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Jiang, Xi Meng. "Research of Computer Aided Design for Anti-Aliasing Filter Based on MATLAB." Applied Mechanics and Materials 88-89 (August 2011): 145–49. http://dx.doi.org/10.4028/www.scientific.net/amm.88-89.145.

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Anti-aliasing filter is widely used in the field of communication and the information collecting system. Generally, anti-aliasing filter is consisted with a low-pass filter, which possesses rapid roll-off rate. In order to ensure that there will be a very smooth amplitude frequency characteristic, the high order Butterworth low-pass filter is adopted to work as anti-aliasing filter. As we know, to design this kind of high order low-pass filter will involve large amount of manual calculation. In order to reduce the manual calculation job, which is meaningless and reduplicated, in this paper, a MATLAB scripts is proposed to establish a model of computer aided design for anti-aliasing filter. To use this MATLAB scripts, the value of parameter for the filter can be easily got according to the design specification.
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3

Luo, Dening, and Jianwei Zhang. "The #-Filter Anti-Aliasing Based on Sub-Pixel Continuous Edges." Mathematics 8, no. 10 (2020): 1655. http://dx.doi.org/10.3390/math8101655.

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Anti-aliasing plays a decisive role in enhancing immersion experience in games and 3D visualization fields. In general, hardware anti-aliasing is not directly compatible with deferred shading. It is challenging to detect geometry edges accurately from sub-pixel to alleviate artifacts. In this paper, we propose an anti-aliasing algorithm of the #-filter anti-aliasing based on sub-pixel continuous edges. It can solve the geometry edges aliasing and the flicker problem in deferred shading. First, the geometry scene with multi-sampling anti-aliasing (MSAA) is rendered to a G-Buffer designed elaborately. Second, the geometry edges are detected on the sub-pixel-level. We mainly take advantage of the Chebyshev inequality to adaptively determine the edges from the probability statistic and the view frustum location. Third, the continuous geometry edges are reconstructed by a #-filter method. Finally, the edge pixels are shaded adaptively. The implementation demonstrates that our algorithm is efficient and scalable for generating high-quality anti-aliasing geometry and reducing shading calculation overhead.
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4

Xu, Xiaomei. "An anti-aliasing filter for ΣΔ ADC". Journal of Electronics (China) 19, № 3 (2002): 311–14. http://dx.doi.org/10.1007/s11767-002-0057-4.

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5

Hou, Zhuo, Sanmin Shen, Yong Ye, et al. "Research on the Linear Acceleration Sensor Signal Acquisition Technology Based on the High-Order Anti-Aliasing Cauer Filter." Journal of Circuits, Systems and Computers 29, no. 01 (2019): 2050008. http://dx.doi.org/10.1142/s0218126620500085.

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A linear acceleration sensor integrated into an inertial measurement unit and its signal processing technology are presented in this paper. Based on the characteristics of the acceleration sensor, before analog-to-digital conversion, a design method for optimizing and conditioning the output signal in levels of frequency with the high-order anti-aliasing Cauer filter is proposed. Compared with the previously published papers, here we not only focus on the anti-aliasing filtering effect under a single channel, but also pay more attention to the anti-aliasing filtering effect with more data to the same type of channels with the same cut-off frequency and different types of channels with different cut-off frequencies. Similar to other kinds of filters, this paper points out that the high-order anti-aliasing Cauer filter also has its inherent delay characteristic. And this paper also reveals the qualitative relationship between frequency and time delay in different testing environments by using various delay test data. Compared with the previously published papers, through the simple solution processing with the true attitude data, this paper further estimates the error of simple attitude signal processing.
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6

Kim, Wook-Joong, Nam-Ho Hur, and Jin-Woong Kim. "Geometric analysis and anti-aliasing filter for stereoscopic 3D image scaling." Journal of Broadcast Engineering 14, no. 5 (2009): 638–49. http://dx.doi.org/10.5909/jbe.2009.14.5.638.

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7

Chikada, Yoshihiro. "A Novel Method for Suppression of Aliasing Ghosts." Symposium - International Astronomical Union 129 (1988): 529–30. http://dx.doi.org/10.1017/s007418090013551x.

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8

Brtník, Bohumil. "Combination of HP and LP filters for narrow band antialiasing filter." Journal of Electrical Engineering 72, no. 4 (2021): 283–86. http://dx.doi.org/10.2478/jee-2021-0040.

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Abstract The discrete time signal processing requires an anti-aliasing filter at the input and a reconstruction filter at output. Some filters of biquads structure are characterized by a decreasing of the attenuation at high frequencies, caused by the final value of the output resistance of the operational amplifier. In this paper we discuss a design of combined BP filter without mentioned decrease. The proposed filter structure was verified by SPICE simulation.
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9

Lee, Sang Won, Ryungkee Chang, and Sucbei Moon. "Optimized Optomechanical Anti-Aliasing Filter for Digital Camera Photography." Journal of the Optical Society of Korea 19, no. 5 (2015): 456–66. http://dx.doi.org/10.3807/josk.2015.19.5.456.

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10

Ren, Xue Hai, and Fang Qi Yu. "A Novel Octave Filter Bank Design Method Based upon Cascaded Filters." Advanced Materials Research 834-836 (October 2013): 1122–27. http://dx.doi.org/10.4028/www.scientific.net/amr.834-836.1122.

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A novel octave or fractional octave filter design method is presented here. In this method, a cascaded IIR filter is applied to overcome the Finite Word-Length Effect. Compared with the traditional octave filter bank, this method does not require 1/2 extraction or a corresponding anti-aliasing filter. The filter frequency response is improved. Filter attenuation values conform to the standard IEC1260-1995 defined class 0 filters. Simulation and experimental studies shows that the filter bank obtains a more accurate result than does the traditional method, especially in the low-frequency part. The 1/3 octave filter bank can analyze speech signals effectively.
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