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IIRFilter butter ( Filter_Type type, int order, double fs, double f1, double f2 = 0.0, bool prewarp = true )

Make an butterworth filter.

Documentation

Make an butterworth filter. Throws a runtime_error or invalid_argument exception, if an illegale argument is specified.
Returns:
IIRFilter
Parameters:
type - Filter type 0: Low Pass 2: High Pass 3: Band Pass 4:Band Stop
order - Filter order.
fs - Sampling frequency (Hz).
f1 - Pass band edge (Hz).
f2 - Another pass band edge (Hz).
prewarp - True for prewarping freqencies.

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Please send questions and comments to zweizig_j@ligo.caltech.edu

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