Skip to content

Function ::kfr_fir_design_f64¶

`function` kfr_fir_design_f64(KFR_FIR_RESPONSE, KFR_WINDOW_TYPE, kfr_f64, kfr_f64, kfr_f64, kfr_f64, kfr_bool, kfr_f64 *, size_t) capi ¶

kfr_bool kfr_fir_design_f64(KFR_FIR_RESPONSE response, KFR_WINDOW_TYPE type, kfr_f64 param,
                            kfr_f64 frequency, kfr_f64 high_frequency, kfr_f64 fs,
                            kfr_bool normalize, kfr_f64* taps, size_t size)

Designs a linear-phase FIR filter by the window method (double precision).

Parameters
response	Filter response type (see `KFR_FIR_RESPONSE` ).
type	Window function applied to the impulse response (see `KFR_WINDOW_TYPE` ).
param	Window-specific parameter (alpha, beta or epsilon, see `KFR_WINDOW_TYPE` ).
frequency	Cutoff frequency in Hz, or lower edge for band-pass and band-stop.
high_frequency	Upper edge in Hz for band-pass and band-stop. Ignored otherwise.
fs	Sample rate in Hz. Must be greater than zero.
normalize	Non-zero to normalize the taps the same way as the C++ `kfr::fir_*()` family does. Low-pass and band-stop then have unit DC gain. High-pass and band-pass use the C++ scaling.
taps	Output buffer receiving `size` taps. Must hold at least `size` elements.
size	Number of taps. Must be greater than zero. The filter order is `size - 1` .

Returns
	Non-zero on success, or 0 on error (see `kfr_last_error()` ).

Fully qualified name: kfr_fir_design_f64(KFR_FIR_RESPONSE, KFR_WINDOW_TYPE, kfr_f64, kfr_f64, kfr_f64, kfr_f64, kfr_bool, kfr_f64 *, size_t)

Declared at capi.h:1255