fact.filter

Class FirFilter

java.lang.Object

fact.filter.FirFilter

All Implemented Interfaces:

stream.Processor

public class FirFilter
extends Object
implements stream.Processor

This class implements a simple Fir-Filter. See http://en.wikipedia.org/wiki/Fir_filter for Details. The coefficients of the are stored in an array {n, n-1, n-2, ..}. Values outside of the data domain are treated as zeroes.

Author:

Kai Bruegge <kai.bruegge@tu-dortmund.de>

Field Summary

Fields

Modifier and Type	Field and Description
Double[]	coefficients
String	key
String	outputKey

Constructor Summary

Constructors

Constructor and Description
FirFilter()

Method Summary

Modifier and Type	Method and Description
stream.Data	process(stream.Data item)

Methods inherited from class java.lang.Object

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

Field Detail

coefficients

@Parameter(required=false,
           description="Filter coefficents array. {n, n-1, n-2, ..}.",
           defaultValue="{0.5f,0.2f, 0.1f}")
public Double[] coefficients

key

@Parameter(required=true)
public String key

outputKey

@Parameter(required=true)
public String outputKey

Constructor Detail

FirFilter

public FirFilter()

Method Detail

process

public stream.Data process(stream.Data item)

Specified by:

process in interface stream.Processor