gr::filter::mmse_interp_differentiator_cc Class Reference

Compute intermediate samples of the derivative of a signal between signal samples x(k*Ts) More...

#include <gnuradio/filter/mmse_interp_differentiator_cc.h>

Public Member Functions
	mmse_interp_differentiator_cc ()
	mmse_interp_differentiator_cc (mmse_interp_differentiator_cc &&)=default
unsigned	ntaps () const
unsigned	nsteps () const
gr_complex	differentiate (const gr_complex input[], float mu) const
	compute a single interpolated differentiated output value. More...

Protected Attributes
std::vector< kernel::fir_filter_ccf >	filters

Detailed Description

Compute intermediate samples of the derivative of a signal between signal samples x(k*Ts)

This implements a Minimum Mean Squared Error interpolating differentiator with 8 taps. It is suitable for signals where the derivative of a signal has a bandwidth of interest in the range (-Fs/4, Fs/4), where Fs is the samples rate.

Although mu, the fractional delay, is specified as a float, in the range [0.0, 1.0], it is actually quantized. That is, mu is quantized in the differentiate method to 128th's of a sample.

Constructor & Destructor Documentation

mmse_interp_differentiator_cc() [1/2]

gr::filter::mmse_interp_differentiator_cc::mmse_interp_differentiator_cc

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mmse_interp_differentiator_cc() [2/2]

gr::filter::mmse_interp_differentiator_cc::mmse_interp_differentiator_cc ( mmse_interp_differentiator_cc &&  )

default

Member Function Documentation

differentiate()

gr_complex gr::filter::mmse_interp_differentiator_cc::differentiate	(	const gr_complex	input[],
		float	mu
	)		const

compute a single interpolated differentiated output value.

input must have ntaps() valid entries. input[0] .. input[ntaps() - 1] are referenced to compute the output value.

mu must be in the range [0, 1] and specifies the fractional delay.

Exceptions

std::runtime_error

if mu is not in the range [0, 1].

Returns

the interpolated differentiated output value.

nsteps()

unsigned gr::filter::mmse_interp_differentiator_cc::nsteps

(

)

const

ntaps()

unsigned gr::filter::mmse_interp_differentiator_cc::ntaps

(

)

const

Member Data Documentation

filters

std::vector<kernel::fir_filter_ccf> gr::filter::mmse_interp_differentiator_cc::filters

protected

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The documentation for this class was generated from the following file:

• mmse_interp_differentiator_cc.h