Fourier Transforms

PV‑WAVE Advantage already has the function FFTCOMP for computing the real or complex FFT, but since a double-precision complex FFT was needed for PV‑WAVE Signal Processing Toolkit, the function DCMPLXFFT has been implemented.

Polynomial Evaluation

The PV‑WAVE Advantage function POLY performs evaluation of polynomials, however since a double-precision complex evaluation was needed for PV‑WAVE Signal Processing Toolkit, the function DBLPOLY was devised.

DIGITAL_FILTER

DIGITAL_FILTER is an older PV‑WAVE Advantage function which, like the Signal Processing Toolkit FILTER and FIRWIN functions uses a Kaiser window to filter an input signal. Although DIGITAL_FILTER is available, as a signal processor you should use the functions FIRWIN and FILTER to perform data filtering with a Kaiser window.