Decimate - psambit9791/jdsp GitHub Wiki

Decimate downsamples the input signal after applying an anti-aliasing filter.

The examples provided here use this signal:

$\sin(4\pi t) + \sin(60\pi t)$

Non-Zero Phase Shift

The parameters for this filter are as follows:

• Down Sampling Factor ⇨ 5
• Sampling Frequency ⇨ 100

Code

int Fs = 100;
int factor = 5;
boolean zero = false;
Decimate d = new Decimate(signal, Fs, zero);
double[] out = d.decimate(factor);

Zero Phase Shift

The parameters for this filter are as follows:

• Down Sampling Factor ⇨ 5
• Sampling Frequency ⇨ 100

Code

int Fs = 100;
int factor = 5;
boolean zero = true;
Decimate d = new Decimate(signal, Fs, zero);
double[] out = d.decimate(factor);