Temat: digital filter design - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Digital-Filter-Based Compensation of Case Effect in Sound-Level Meters
Autorzy:: Miękina, A.
Podgórski, A.
Powiązania:: https://bibliotekanauki.pl/articles/226786.pdf
Data publikacji:: 2010
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: digital compensation
DSP applications
FIR filter design
Remez algorithm
Opis:: The methodology for the design of a digital filter, which should compensate the effect of reflections and diffraction from the sound-level meter's casing (the so-called case effect), is presented. The coefficients of the family of the finite impulse response (FIR) filters, which were selected to fulfill the requirements of the compensation, were obtained in the MATLAB environment using the Remez algorithm. The frequency response of the selected designed filter are given. The chosen FIR filter was implemented in an on-chip Enhanced Filter Coprocessor of a fixed point 24-bit digital signal processor of a sound-level meter.
Źródło:: International Journal of Electronics and Telecommunications; 2010, 56, 3; 263-266
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Design of Sparse FIR Filters with Low Group Delay
Autorzy:: Konopacki, Jacek
Powiązania:: https://bibliotekanauki.pl/articles/1844604.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: digital filters
FIR filter design
sparse filters
reduced group delay filters
Opis:: The aim of the work is to present the method for designing sparse FIR filters with very low group delay and approximately linear-phase in the passband. Significant reduction of the group delay, e.g. several times in relation to the linear phase filter, may cause the occurrence of undesirable overshoot in the magnitude frequency response. The method proposed in this work consists of two stages. In the first stage, FIR filter with low group delay is designed using minimax constrained optimization that provides overshoot elimination. In the second stage, the same process is applied iteratively to reach sparse solution. Design examples demonstrate the effectiveness of the proposed method.
Źródło:: International Journal of Electronics and Telecommunications; 2021, 67, 1; 121-126
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Estimation of filter order for prescribed, reduced group delay FIR filter design
Autorzy:: Konopacki, J.
Mościńska, K.
Powiązania:: https://bibliotekanauki.pl/articles/199999.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: digital filters
FIR filter design
filter order estimation
filtry cyfrowe
projekt filtru FIR
filtr FIR
Opis:: 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.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2015, 63, 1; 209--216
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

Artykuł

Informacja