sinc_bandpass()

MAYAFLUX_API std::vector< double > MayaFlux::Kinesis::Discrete::sinc_bandpass	(	double	low_hz,
		double	high_hz,
		double	sample_rate,
		size_t	taps
	)

Windowed-sinc bandpass FIR coefficients.

Difference of two lowpass kernels. Requires low_hz < high_hz; the arguments are swapped internally if supplied in the other order.

Parameters

low_hz	Lower cutoff in Hz
high_hz	Upper cutoff in Hz
sample_rate	Sampling rate in Hz
taps	Kernel length, forced odd

Returns

Coefficient vector of length taps or taps + 1

Definition at line 306 of file Coefficients.cpp.

{
    double lo = low_hz;
    double hi = high_hz;
    if (lo > hi)
        std::swap(lo, hi);
 
    const size_t n = force_odd(taps);
    std::vector<double> upper = lowpass_kernel(hi, sample_rate, n);
    const std::vector<double> lower = lowpass_kernel(lo, sample_rate, n);
 
    for (size_t i = 0; i < n; ++i)
        upper[i] -= lower[i];
 
    return upper;
}