Spectral Spread

Spectral spreads represent the standard deviation of amplitude distribution around a sound’s spectral centroid, calculated using the square root of its second-order moment. A signal with a high spectral spread will look “larger” and “flatter” (literally more “spread”) than a signal with a lower spectral spread value. More...

Functions
flt32_t	nrf_dsp_spectral_spread_f32 (flt32_t p_spectrum[], uint16_t num, nrf_dsp_spectral_ctx_f32_t *p_ctx)
	Calculate Spectral Spread in floating-point spectrum.
int16_t	nrf_dsp_spectral_spread_i16 (int16_t p_spectrum[], uint16_t num, nrf_dsp_spectral_ctx_i16_t *p_ctx)
	Calculate Spectral Spread in INT16 fixed-point spectrum.

Detailed Description

Spectral spreads represent the standard deviation of amplitude distribution around a sound’s spectral centroid, calculated using the square root of its second-order moment. A signal with a high spectral spread will look “larger” and “flatter” (literally more “spread”) than a signal with a lower spectral spread value.