Analog Filters

Bessel, Butterworth, Chebyshev, elliptic, bilinear transformation, analysis functions

Design and analyze Bessel, Butterworth, Chebyshev, and elliptic analog filters. Perform analog-to-digital filter conversion using impulse invariance or the bilinear transformation.

Functions

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Analog Filter Design and Analysis

`besself`	Bessel analog filter design
`butter`	Butterworth filter design
`cheby1`	Chebyshev Type I filter design
`cheby2`	Chebyshev Type II filter design
`ellip`	Elliptic filter design
`freqs`	Frequency response of analog filters
`freqspace`	Frequency spacing for frequency response

Analog Filter Prototypes

`besselap`	Bessel analog lowpass filter prototype
`bilinear`	Bilinear transformation method for analog-to-digital filter conversion
`buttap`	Butterworth filter prototype
`cheb1ap`	Chebyshev Type I analog lowpass filter prototype
`cheb2ap`	Chebyshev Type II analog lowpass filter prototype
`ellipap`	Elliptic analog lowpass filter prototype
`impinvar`	Impulse invariance method for analog-to-digital filter conversion
`lp2bp`	Transform lowpass analog filters to bandpass
`lp2bs`	Transform lowpass analog filters to bandstop
`lp2hp`	Transform lowpass analog filters to highpass
`lp2lp`	Change cutoff frequency for lowpass analog filter