Frequency Response Curves with EzFFT
Recently I’ve been toying around with making simple bi-quad filters in Reaktor. In doing so I realized a simple method for measuring the frequency response curve for a given filter: simply feed a white noise signal thru the filter, then chart the FFT for the signal. Since white noise contains (statistically speaking) all frequencies, you can get a pretty good idea of what gets filtered out.
Making an ensemble out of this is an extremely quick modification of the Ezfft Analyzer that comes with Ezfft. Download it here.