Module resampling 

Multi-rate digital signal processing routines: Cascaded Integrator-Comb (CIC) decimation/interpolation and linear fractional resampling.

Structs

CicDecimator

Cascaded Integrator-Comb (CIC) Decimator for downsampling signals in integer arithmetic.

CicInterpolator

Cascaded Integrator-Comb (CIC) Interpolator for upsampling signals in integer arithmetic.

Functions

polyphase_decimate_q15

Polyphase FIR decimation by integer factor M.

polyphase_interpolate_q15

Polyphase FIR interpolation by integer factor L.

resample_linear_f32

Linear fractional resampler. Resamples src into dst according to ratio (src_sample_rate / dst_sample_rate).

resample_linear_q15

Linear fractional resampler in Q15. ratio_q16 is (src_sample_rate / dst_sample_rate) in Q16.16 format.

spectral_interpolate_2x_f32

Spectral (Sinc) 2:1 Interpolator using frequency-domain zero-padding via FFT/IFFT.