nrf_dsp_freq_snr_i16()

int16_t nrf_dsp_freq_snr_i16	(	int16_t	p_amplitude_spectrum[],
		uint16_t	num,
		uint16_t	p_freq_indicies[],
		uint16_t	freq_indicies_num )

#include <include/nrf_edgeai/dsp/spectral/nrf_dsp_freq_snr.h>

Compute signal-to-noise ratio for provided frequencies in fixed-point amplitude spectrum, signal represent provided frequencies, noise is everything else.

Parameters

[in]	p_amplitude_spectrum	Pointer to amplitude spectrum vector
[in]	num	Number of bins/samples in amplitude spectrum
[in]	p_freq_indicies	Pointer to frequency indicies (bins) for which SNR will be computed
[in]	freq_indicies_num	Number of frequency indicies provided

Returns

int16_t SNR of provided frequencies