Package io.github.dkaukov.afsk.dsp

Class FastFIR

java.lang.Object

io.github.dkaukov.afsk.dsp.FastFIR

public final class FastFIR
extends Object

Transposed direct-form FIR (“FastFIR”). - O(M) per sample, no modulo, cache-friendly - b[] are taps, z[] is state (length = M-1) y[n] = b0*x[n] + z0 z0' = z1 + b1*x[n] z1' = z2 + b2*x[n] ... zM-2'= b(M-1)*x[n]

Constructor Summary

Constructors

Constructor	Description
FastFIR(float[] taps)

Method Summary

Modifier and Type	Method	Description
float	filter(float x)	Filter one sample.
int	length()
void	reset()	Clear internal state.
float[]	taps()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

FastFIR

public FastFIR(float[] taps)

Method Details

filter

public float filter(float x)

Filter one sample.

reset

public void reset()

Clear internal state.

length

public int length()

taps

public float[] taps()