sinc_highpass()

MAYAFLUX_API std::vector< double > MayaFlux::Kinesis::Discrete::sinc_highpass	(	double	frequency,
		double	sample_rate,
		size_t	taps
	)

Windowed-sinc highpass FIR coefficients.

Spectral inversion of the corresponding lowpass. Requires odd taps for the inversion to be exact; even lengths are incremented internally.

Parameters

frequency	Cutoff in Hz, clamped to (0, sample_rate/2)
sample_rate	Sampling rate in Hz
taps	Kernel length, forced odd

Returns

Coefficient vector of length taps or taps + 1

Definition at line 187 of file Coefficients.cpp.

{
    const size_t n = force_odd(taps);
    std::vector<double> h = lowpass_kernel(frequency, sample_rate, n);
 
    for (double& v : h)
        v = -v;
    h[(n - 1) / 2] += 1.0;
 
    return h;
}

References frequency, and h.