نتایج جستجو برای: decimation
تعداد نتایج: 1841 فیلتر نتایج به سال:
In single-rate systems, only one sampling rate is used throughout a digital signal processing system, whereas in multirate systems the sampling rate is changed at least once. This laboratory deals with the realization and analysis of multirate systems. In the first experiment we will examine the effects of decimation and interpolation. Furthermore, a small multirate signal processing system is ...
Three dimensional surface meshes are used in several computer graphics and calculation applications. One of the fields we can find these models in is Acoustics. In regards to the acoustic field calculations, often the models we get from CAD programs or 3D laser scanners are excesively detailed for low frequency calculations. A decimation process of triangular meshes is presented in this paper. ...
This paper introduces an efficient Field Programmable Gate Array (FPGA) realization of a multirate decimation filter with narrow pass-band and narrow transition band for Noise thermometer application. The filter is composed of three stages; the first stage is a Cascaded Integrator Comb (CIC) decimation filter, the second stage is a two-coefficient half-band (HB) filter and the last stage is a s...
applications such as digital spectrum analyzers, digital filtering, image processing, and video transmission need to compute the Discrete Fourier Transform (DFT). A Chip architecture to compute a 64point DFT using radix-4 algorithm every 18.87 μs at 100MHz clock rate is designed. This processor incorporates static memory, controller, and combinational operating unit (COU). Input data and output...
This paper presents the design and implementation of sharpening of maximally flat cascaded integrator comb compensation filters. The modified sharpened cascaded integrator comb compensation filter is used to improve magnitude response and gain. For wide-band compensation fourth-order linear phase filters is considered. The decimation factor of CIC filter is D and number of adders are depends up...
The fast Hartley transform and algorithm for DHT was introduced by Bracewell. The split radix decimation-infrequency algorithm that requires less number of operation counts as compared to the radix-2 and radix-4 algorithms was developed by Sorenson et al. In this paper, an analog architecture for a split radix decimation-in-time algorithm is proposed. It utilizes three different structures in t...
We develop a formalism for performing real space renormalization group transformations of the " decimation type " using perturbation theory. The type of transformations beyond d = 1 is nontrivial even for free theories. We check the formalism on solvable case of O(N) symmetric Heisenberg chain. The transformation is particularly useful to study asymptotically free theories. Results for one clas...
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