Butterworth filter


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Butterworth filter

[′bəd·ər‚wərth ′fil·tər]
(electronics)
An electric filter whose pass band (graph of transmission versus frequency) has a maximally flat shape.
References in periodicals archive ?
As shown in this study, 4-pole phaseless Butterworth filters (as suggested by SAE J211-2014) are only capable of partially ameliorating this.
Three control methods were tested on an actual SAPF model: the Butterworth filter method with successive 4th-order transformation, Fast Fourier transform method and the newly developed comparative method.
Filter coefficient for second order Butterworth filter are given as follows:
This time, we choose a Chebyshev filter, with exactly the same sampling choice as for the above Butterworth filter.
Therefore, we have also implemented a fourth-order zero-lag Butterworth filter in the tab labeled Velocity and Acceleration.
3 standard parameters (hfQRS, RMS40, LAS<40)--calculated from signal filtered by 40Hz high-pass and 250 Hz low pass four-pole IIR Butterworth filter,
Band-pass Butterworth filter as radial component, and raised cosine filter as angular component proposed by Sherlock et al.
These two are particularly important because the Butterworth filter provides maximally flat frequency response in the pass band and the Bessel filter has maximally linear phase.
In this study, the usefulness of Mexican hat wavelet, French hat wavelet, Haar wavelet, Gabor function wavelet, Harmonic wavelet and Butterworth filter for source location on thin structures were investigated.
Filtering - Enable or disable the use of the 2-pole, 10 kHz, Butterworth filter.
The Bessel filter performs significantly better than the Butterworth filter.
It is seen that the measurement of settling time after using of the Butterworth filter is not possible and standard high-pass filters can not be used for initial filtering of DAC settling time test signals.